Tag: service life

What You Need to Know About Insulated Metal Panels

Posted on by Tyler Roose

Insulated Metal Panels (IMPs), simply put, are the insulated version of single-skin (uninsulated) metal panels. As the name suggests, IMPs provide insulation and, therefore, thermal control and barrier protection to structures. This helps ensure air, heat and moisture stay outside of a building, reducing the chances of mold, corrosion and rotting.

ABC Blog: Insulated Metal Panels (IMPs)A versatile and practical choice, IMPs are designed for many roof and vertical and horizontal wall applications—including ceiling panels and wall partitions for commercial, industrial and post-frame building types. IMPs are ideal for sustainability-minded designs, offering excellent R-values (indicating their insulating power) and improving energy efficiency. What’s more, they’re available in various colors, thicknesses, widths and finishes, providing many customization options to choose from.

Here, we’ll take a look at some of the many benefits of using IMPs. Plus, we’ll review some factors to consider when deciding if IMPs are the right choice for a building project.

Choosing IMPs:

There are several important factors that go into the decision to use IMPs. While they offer tremendous benefits, it’s always good to research the product to ensure it meets your needs. The manufacturer, as always, is a great resource to help determine the optimal material and product, given all the parameters. Here are some of the main factors to consider.

 Benefits of using IMPs:
  • Installation and Maintenance: IMPs have similar requirements to single-skin in terms of time and labor.
  • Longevity: IMPs can enhance the building lifespan, as they protect from unwanted and damaging heat and moisture.
  • Versatility: Available in a range of panel colors, thicknesses, widths and finishes, IMPs offer many customization options.
  • Energy Savings: Because they help regulate interior temperature, IMPs are more effective at energy conservation as compared to single-skin panels.
  • Energy Performance: Contractors and builders can use IMPs to achieve necessary energy performance levels with this single-source enclosure, providing a continuous blanket of protection.
  • R-Value Performance: IMP tests show thermal performance values up to R-8.515 (roof panels) and 7.08 (wall panels) per inch of panel thickness. i.e., a 2.5-inch-deep panel would easily meet the International Energy Conservation Code and ASHRAE minimums.
  • Cost: While generally more expensive than single-skin panels, this cost is often offset by long-term savings.
  • Tax Savings: Federal, state and/or local governments often offer incentives for using sustainable or “green” products that meet energy-efficiency requirements. Your personal tax advisor can share more information on any currently available incentive programs.
How to know if you need an insulated metal panel:
  • Building Type/End Use: Any structure that will hold people or goods should consider using IMPs. Specialized facilities that require reliable temperature and moisture regulation are excellent candidates for IMP use. These include refrigerated warehouses, research laboratories, government facilities, defense contractors, technology companies, MRI clinics and food production facilities, to name a few.
  • Geography and Weather: Depending on region/weather considerations, IMPs might be the best choice. To help determine if that is the case, you can calculate the functional amount of insulation needed in your area by using the minimum rated R-values method or the maximum U-factor assembly calculation. [For IMPs, the Maximum U-Factor Assembly calculations is recommended and can be tested using ASTM C1363.]
  • Meeting Fire Rating Requirements: To become fire-rated, IMP manufacturers can submit full-size product samples to a testing laboratory like Underwriters Laboratories (UL). The products are then tested according to standard, agreed-upon procedures such as ANSI/UL 263, “Standard for Fire Tests of Building Construction and Materials.” The manufacturer can provide confirmation as to whether a particular IMP meets the requirement for your project.

All things considered, the advantages IMPs offer often make them ideal for many building applications. This is particularly true when it comes to energy efficiency and sustainability for the post-frame, commercial, industrial and institutional markets. For more information on IMPs, check out ABC’s IMP resources or reach out to an ABC representative in your area.

Metal Panel Color Selection—What to Consider

Posted on by Candy McNamee

Choosing a metal panel color can feel daunting these days. With the number of available metal building colors having expanded from the usual white, tan and Galvalume to more than a couple of dozen options, where do you begin? What factors should influence your decision? Read on for recommendations on key questions to ask to help you make the best decision for both the desired aesthetic as well as longevity, durability and energy efficiency of your metal project.

What colors are metal products available in?

This is the most obvious consideration and can be answered with a simple search of the metal product manufacturer’s website. Authorized dealers also often have physical metal panel color charts,  samples or chips from metal product manufacturers for in-person review. While metal panel color options used to be limited to standard stock colors like white, tan and Galvalume, today, many manufacturers are able to offer many more color options outright as well as additional custom colors. These new metal panel color options now include metallic paints, as well as ones with metal flecks that add sheen and sparkle, giving the panel color more depth and durability.

How can I be sure I’m getting the exact metal panel color I think I’m getting?

Upon request, most metal panel manufacturers are more than happy to provide actual color chips so you can see the exact color in person. While the chips on color charts are a close facsimile, getting color chips from the plant is ideal to ensure a perfect match. Additionally, you can view images of completed projects on the manufacturer’s website as seen in ABC’s Project Gallery. This section not only shows you photos of real-life building projects using our metal products so you can see how colors look in different combination and on different building types, but it also provides details on the products and colors used with additional resources to help you make your selection.

In addition, ABC’s Color Visualizer helps you envision your actual project before you even order your metal panels. You can upload your own photo or choose from our sample project photos to pick your ideal panel type and color. While it’s useful to review the manufacturer’s website and color visualization for project images and ideas, keep in mind that colors may look a bit different on your computer than they do in real life.

ABC Metal Panel Color Resources

How to select the right color for optimal energy efficiency?

Cool metal roofs have been shown to be among the most sustainable and energy-efficient choices out there. They are designed to reflect more of the sun’s energy (and heat) back into the atmosphere to keep your building cooler and reduce your air-conditioning bills. (Read more about cool metal roofs in our blog post.)While lighter colors are generally the best option to optimize cooling effects, it should be stated that improved energy performance is a result of much more than just the roof’s color. The Cool Roof rating of paints and coating systems used by metal panel manufacturers are generally listed with the color choices on the manufacturer’s website. For detailed information, a great resource is the Cool Roof Rating Council, which maintains a products directory that lists solar reflectivity and thermal emissivity values for many roofing brands.

ABC offers the most sophisticated silicone polyester coating paint system in the industry. It offers optimum exterior protection and superior resistance to chemical corrosion and ultraviolet radiation, and most of our paint coatings are ENERGY STAR® qualified.

Can I paint over my metal panels?

If you’re considering painting your metal panels, trim or accessories, you should first check with the metal product manufacturer to ensure you won’t be voiding any warranties. You can also ask the manufacturer about touch-up paint and the correct way to apply it if small corrections need to be made. If you do decide to completely re-paint your panels, it’s best to get the panel manufacturer’s recommendation on the best paint and application products/methods to use to ensure you don’t damage the steel underneath the paint.

What if my paint isn’t performing the way I expect it to?

Most manufacturers offer a limited warranty on their paint systems. Before you buy, be sure you understand the limits of the warranty. If you think your situation warrants a claim, take pictures of the product and send them to the manufacturer to start the process. Do not attempt to correct or cover any issues as this will likely void your warranty. The manufacturer will likely send someone out to look at your material and will keep you informed throughout the process.

Armed with the right questions, resources and, hopefully, color charts and samples, choosing a color for your new metal roof can be an exciting part of the process. Your job is to take the time to review the options to make the most practical and aesthetically appropriate decision. ABC representatives are always ready with the resources and information you need, so feel free to contact one of our team members with your questions.

Metal Product Distributors: quote and order metal building products anytime, anywhere and from any device using our online ordering tool. If you don’t already have an account, register for access today!DISTRIBUTORS: Shop online at shop.abcmetalroofing.com!

When to Call a Metal Panel Manufacturer: Part II

Posted on by Ken Buchinger

In Part 1 of this series, the success of a metal roof or wall project can rest heavily on the installer’s ability to recognize issues. When that happens, calling the manufacturer is not just suggested, but imperative to ensure any potential problem is averted before it’s too late. In addition to issues like damage to the physical panel or problems with the fasteners discussed previously, let’s take a closer look at a few other common circumstances under which ABC recommends reaching out to the manufacturer:

Alignment and Substrate Issues

The installer is responsible for verifying the condition of the substrate and checking for proper alignment before attaching any sheeting materials. If the installer notices any issues like this (either before installation or once they begin laying panels), they should stop and address them immediately. This might include oil canning or other irregularities in panel appearance. The installer should investigate the source, and—if unable to identify and properly remedy the situation on their own—they should call to the manufacturer’s support team. They may be able to suggest ways to identify source of the problem—whether it be installation or manufacturing—and from there, make suggestions on how to best address the situation.

 

Accessories

Adding penetrative accessories such as snow guards or mechanical curbs to a roof or installing doors, windows or louvers to walls can impact the system, its weather-tightness and appearance. Oftentimes, accessory installers with little or no knowledge of metal sheeting systems come onto the job to perform accessory installation. In these cases, it’s wise to visit with manufacturer prior to installation of these accessories and to alert the non-metal panel installer of precautions the manufacturer suggests be taken.

The image at left represent several installation issues that could have been avoided by calling the metal manufacturer prior to installation. The piping used is not compatible with metal roofing and was not installed in such a way to prevent issues with roof performance, including leaking and water damage.

Manufacturer recommendations can vary based on the panel type and building slope, as well as on the accessory and fastener type, and installation location.

Another factor to consider when adding accessories to your metal building is that some material types can react negatively with the installed metal system and lead to damage as well as void manufacturers warranties. Since accessories can be make of many different types of material, any potential accessories should always be researched prior to installation to ensure the material type is compatible with your metal roof and/or wall system.

 

Panel Engagement

Panel systems are designed and engineered to attach and engage one another to ensure optimal performance. These specification are outlined in the manufacturer’s installation manuals and project drawings. If at any point the panel does not engage as depicted in the details, installation should be halted and reviewed to determine the cause. This can require a call to the manufacturer to help determine if the matter is site- and/or substrate-related or if it’s a manufacturing issue requiring replacement material.

Panel engagement issues that warrant ceasing installation and making a call to the manufacturer include:

  • laps are not nesting properly
  • clips are not engaging as they should
  • panel modularity can’t be controlled
  • panels aren’t “resting” on the substrate—causing excessive bowing and stress

Once the material is completely installed, it is much more difficult to determine the cause of a problem and is potentially more expensive to remedy. Additionally, in many cases, full installation constitutes acceptance of the product and the manufacturer’s hands could be tied or extremely limited in being able to assist in remedying after the fact.

By knowing when to be proactive with a call to the manufacturer, installers can mitigate many types of potential pitfalls. And if you’re just not sure, it’s best to call.

For more information on metal roof and wall products, visit us online or reach out to your local representative today!

When to Call a Metal Panel Manufacturer: Part 1

Posted on by Ken Buchinger

Each metal building installation is unique and even the most experienced of installers can run into trouble on a job. Whether a panel isn’t engaging properly, it’s not meeting stated tolerances or fasteners are missing or not working, anyone who takes on the task of installing metal panels needs to know when to call a metal panel manufacturer for support, guidance and resources at any time to ensure the success of their project.

ABC Blog: When to Call a Metal Panel Manufacturer

Manufacturer Resources:

While it’s not the manufacturer’s responsibility to guarantee their panels are installed correctly, reputable manufacturers should set installers up for success. They can do this by providing product resources and recommendations on how to alleviate or mitigate potential pitfalls, and by sharing tips on how to avoid common mistakes that other installers have made.

  • Product Installation Manuals and Construction Drawings: Before installation begins, the product installation manual and detailed construction drawings should be reviewed by the installer—especially if this is his or her first time working with the product. These resources contain all the product information needed as well as installation best practices. American Building Components makes product details and installation information available to metal panel dealers and distributors through shop.abcmetalroofing.com. If you’re a dealer or distributor, click here to learn more and sign up for an account!

Installation techniques can vary based on the unique dimensions of the panel as well as on the actual building design. When an issue arises that is beyond an installer’s expertise, it’s in the best interest of everyone involved to call a metal panel manufacturer for input before permanent mistakes are made.

When to Call a Metal Panel Manufacturer

Examples of when American Building Components recommends that an installer immediately call a metal panel manufacturer are:

  • Product Damage: Building owners may not always be able to recognize material damage and understand how it can be detrimental. Therefore, installers should always evaluate all building materials before any installation begins. If—after review—damage is suspected, the building owner should take pictures of the damage and notify the manufacturer immediately. The manufacturer will advise if the issue is minor and installation can begin, or if the panels should not be installed. The last thing you want to do is install damaged panels and have to uninstall them and wait for new materials. The impact of removing and replacing panels like this will significantly increase cost and delay the construction schedule.
  • Fastener Issues: The type of fastener used depends on the material they will be fastening to (substrate). If the substrate differs from what’s stated in the project details, check with the manufacturer to verify that the provided fasteners can be used. If the screws aren’t engaging properly, or there any problems with the fastener type. The manufacturer can advise how to move forward based on the project details. In short, substituting fasteners with ones not supplied by the manufacturer is never recommended.

Remember: no problem is too small to call a metal panel manufacturer for advice! In part two of this series, we’ll share more situations when calling the manufacturer will save time, money and headache. For more information on metal roof and wall products, visit us online or reach out to your local representative today!

Proper Ventilation for Metal Roofs and Walls

Posted on by David Lester

Selecting metal roof and wall panels is a strategic investment for the life of a building. To protect their investment, it is key that your customers ensure the proper ventilation system is installed. Optimal air movement not only promotes temperature regulation and energy efficiency but also reduces the risk of moisture-related issues like condensation build-up. Here, we look at some of the main ventilation considerations and resources your customers need to ensure success.

ABC Blog: Proper Ventilation of Metal Roofs and Walls

Why is proper ventilation important?

Proper ventilation helps optimize the performance and efficiency of metal buildings by:

  1. Controlling condensation

Condensation can wreak havoc on metal, causing corrosion, reduced thermal performance of insulation, mold and mildew growth, and even insect infestations. For example, in warm and humid areas, outside air that enters a building without moving through a ventilation system can bring with it large amounts of humidity. This humid air can create an uncomfortable environment, accelerate panel weathering and increase the possibility of mold growth. This issue is worsened when the outside temperature falls below the inside temperature, creating a perfect breeding ground for condensation development.

  1. Regulating temperature

Regulating and maintaining ideal interior temperature can help cool the building in warmer months, keeping the structure comfortable to occupy. Temperature regulation also helps protect the integrity of the building from excess (and premature) metal panel expansion and contraction. This movement can weaken the integrity of fasteners, which are designed to keep panels from detaching/pulling away from the substrate.

  1. Preserving air quality inside the building

Proper ventilation helps remove volatile organic compounds and other air pollutants that are detrimental to human health and productivity. The Environmental Protection Agency (EPA) and the Occupational Safety and Health Administration (OSHA) have published guidance on indoor air quality standards in commercial/institutional buildings. These standards help determine ventilation needs that need to be met to ensure compliance.

Who Needs Ventilation?

As expected, most structures require proper ventilation in accordance with their geographic location, contents and/or building end-use. Structures housing chemicals or moist substances require more ventilation than those storing dry goods in relatively arid environments. Ventilating a building that stores ceramic in the desert is very different than ventilating an indoor sauna in practically any geographic location. Agricultural facilities in particular must employ proper ventilation to mitigate the dangers posed by ammonia and other corrosive airborne fumes. (See our Animal Housing blog post for more.)

How to Ensure Proper Ventilation:

Similarly, the ideal amount and type of ventilation your customers need depends on their building’s unique specifications and end use. Generally, structures larger than 2,400 sq. ft. may require more than one type of ventilator to allow air to move between them (cross-ventilation). Structures that house people, animals and/or valuable material also benefit from cross-ventilation using ridge vents near the roof and a louver vent located closer to the structure’s floor. In these cases, it is recommended that your customers work with design professionals and building engineers who can help determine the building ventilation requirements. These professionals can recommend the appropriate, high-quality metal panels and components that suit the unique requirements of their project.

So, what ventilation options are available for your customers? Ventilation solutions fall into two main categories: natural (unpowered) and mechanical (electrically assisted):

  • Natural ventilation methods include installing a ridge and eave vents that enable air to circulate naturally through the building. Your customers can also use vents that capitalize on the natural vacuum created when air moves quickly over angled surfaces like roofs. The lower pressure in this vacuum draws air out of the building—most often through ridge vents. This choice will depend on your customer’s aesthetic preferences and/or installation location limitations.

 

  • Mechanical or power-assisted ventilation helps draw more cubic feet of air into and out of the space per minute. Powered fans with curved blades and/or louvers are often used to achieve greater air flow. As previously noted, air flow is vital in preventing condensation, so this is particularly helpful in naturally humid environments.

Conclusion

In conclusion, proper ventilation is a critical component of any high-quality building. As metal panels are becoming more popular, understanding how to achieve an effective ventilation system can help ensure the success of your customers’ building projects.

For more on ABC’s ventilation solutions, visit our previous blog on condensation management, check out our ventilation-enabling components or reach out to your local representative today!

Metal Panel Installation: Surface Considerations and Building Applications

Posted on by Ken Buchinger

In our last blog post, we outlined the steps to take before metal panel installation to ensure projects are built to last. In this post, we’ll take a look at the important metal panel installation considerations that should be made, particularly when working with varying surface conditions and building end-uses.

Surface Considerations:

During the installation of metal panels, it is critical that installers:

  • make sure everything is square and on a level plane (i.e., plumb and true). If it’s not, it will need to be corrected. Note: It is not recommended that the building owner do this themselves unless they are experienced and comfortable assuming the associated risks.
  • ensure the integrity of the substrate is not compromised. If installation issues or delays are caused by faulty substrate, for example, the parties responsible for the substrate would need to correct the causal issue. In retrofit projects, existing substrate issues must be addressed, but it is likely that the original builder will not be able to be sourced to correct the problem. In this case, a roofing consultant or knowledgeable substrate tradesman can help advise.
Installing Metal Panels with Different Building Applications

While installation is generally the same for most end-use applications, some equipment may vary. Depending on the other products or materials in the mix, there are certain caveats to keep in mind. For instance:

  • Over Asphalt Shingles: While installing a metal roof over an existing asphalt shingle roof is possible, it is not recommended to place metal panels directly over asphalt. In this scenario, keep in mind that:
    • It’s best to remove asphalt shingles or use a furring strip to create a buffer. (This means you can use a 1” x 4” piece of wood to provide clearance between the asphalt shingles and the metal panels.)
    • It’s not ideal to lay underlayment on top of asphalt and then install a metal roof because the shingle will curl and those imperfections will show through the metal, particularly when using lighter gauge.
  • Over Dissimilar Metals: Do not let your metal panels come into contact with dissimilar metals or allow run-off water that has been in contact with dissimilar metals to come into contact with the metal panels.
  • Over Treated Lumber: Separator material can be recommended by your installer or preferred material provider (lumber yard, home improvement store, etc.) and should be used; appropriate fasteners designed to be used to connect treated lumber with metal panels should always be used in these cases as well.
Other Metal Panel Installation Considerations:

The need for the following features and considerations can vary based on projects.

  • Vapor barriers
  • Ice and water shields
  • Regardless of all else, you’ll always want to be sure local codes/Homeowners Association (HOA) requirements are met.
Final FAQ:

How to choose a Metal Panel installer? End-users can request a list of nearby installers who may be able to help with their project from their metal building material supplier. Material manufacturers do not make these recommendations.

What if your panels are installed incorrectly? Let the installer know about any issues as soon as possible and work to get them resolved quickly. If you think the improper installation jeopardizes the product warranty, please advise the company that sold the material to you (metal panel distributor) as soon as possible. They will work with the manufacturer to resolve any warranty issues.

For more information on metal panel installation considerations or to find a metal panel distributor or installer in your area, contact your local ABC representative.

 

Metal Roof Pitch Part II: Panel Selection for Your Building End-Use

Posted on by Ken Buchinger

In part one of our series on metal panel roof pitch, we looked at the engineering and strength considerations that need to be taken into account when designing or specifying a building. In part two, we’ll review how to make the right metal panel selection for your building end-use by looking at the building type and roof pitch to find the optimal combination of form and function.

Types of roof panels:

Different types of metal roof panels are better suited for certain roof pitches and this mostly has to do with panel rib height and how they’re seamed together. For instance, the lower the pitch, the taller the rib of the roof panel needs to be in order to optimize water carrying capacity. Also, the lower the pitch, the slower water runs off the roof; combined with wind pressure, this can hold water at the eave. As an example:

  • On 2:12 and lower pitches for commercial/industrial jobs, weathertightness warranties will use a mechanically seamed panel because it creates an impenetrable lock that keep water from seeping between the panels. Seamed panels can be thought of as more hydrostatic (resistant to water), whereas non-seamed panels are hydrokinetic, i.e., water runs off of them, but they are not designed to be a water barrier.

Building Type and Use:

Whether residential, post-frame or commercial, structures follow general design criteria regarding metal roof slope, based on to the building type and use. For instance:

Gabled v. Hipped: gabled roofs provide more interior headroom while with hipped roofs, endwall sheet height can be reduced, making for easier ordering and installation as you don’t have to cut/miter the sheets.

  • Residential v. Post-Frame and Commercial Use: While it can generally be assumed that thicker-gauge panels are stronger, the type of building construction, location and end-use can affect the choice in panel thickness. Residential roofs generally have steeper slopes (often due to aesthetic sensibilities), while commercial and post-frame buildings will typically have a shallower pitch to increase the strength of the building. Buildings such as pole barns, post-frame buildings, warehouses and garages can require roof panels to span longer distances between supporting trusses and purlins and therefore require thicker panels to ensure the roof is structurally sound and can aid in reducing the chance of collapse under the weight of snow and water—particularly when the roof pitch is low. For smaller buildings—like residences—with supporting trusses and purlins that are typically closer together, thinner panels can be used in conjunction with thicker trim for an economic, structurally ideal residential metal roofing system. See our blog on metal panel gauges for more.
  • Economics: When a roof has a shallower pitch, less material is needed to cover the same roof span. This can be more economical since fewer square feet of material needs to be purchased, or at least help in offsetting the cost of the thicker panels commonly used on low-slope roof—a consideration often important to companies with multiple properties. Likewise, while more material may need to be purchased for a high-sloped roof, you may be able to buy thinner, less expensive panels since high-slope roofs don’t typically need to be able to support heavier loads like low-slope roofs do.
  • Aesthetics: Traditional residences typically feature a higher roof pitch while this may be less important to commercial building owners. However—from a functional standpoint—thicker panels can be more forgiving of installation errors such as over-tightened screws and aren’t as likely to transfer waves and bumps in sheathing.

Solar Panels and Roof Pitch:

The geographic location of a structure will determine the angle at which the solar panels should be installed. Generally. the closer to the equator you get, the lower the slope the solar panels can tolerate as roofs closer to the equator have more consistent exposure to sunlight as compared to those farther away. If you plan to add solar panels to your metal roof, be sure to check the Solar Reflective Index (SRI) values and minimum slopes set by the ASTM and local governing codes. These standards will advise adequate slope based on your location as well as help control things such as heat island effects, etc.  For more information on solar reflectance and how it is affected by the color of your metal roof panels, see our blog post on cool metal roofs.

Conclusion:

Roof slope is a factor that affects many decisions when it comes to any metal building roofing project regardless of the building’s end use. When embarking on any metal roofing project, be sure that the panels you’ve selected meet local building codes and are produced by a quality manufacturer with knowledge and experience designing for different applications to ensure you get exactly what you’re looking for. For more information on metal panel selection for your building end-use and to learn more about recommendations on roof slope for different building types, contact your local ABC representative today.

 Additional Resources:

For more information on slope requirements, visit NRCA’s website. For more information on steep-slope metal roofs and their benefits, visit the Metal Construction Association’s website.

Metal Roof Pitch Part I: Engineering and Strength Considerations

Posted on by David Lester

Whether you’re an owner who needs to consider roofing material options because of the nature or design of your building, or a distributor/contractor whose job it is to recognize whether a suggested design will or won’t work based on a range of circumstances, it is critical to understand the engineering behind why roof pitch and tensile strength are important on a metal building project. In part one of our series, we look at the engineering and strength considerations that need to be taken into account when designing or specifying a building, while part two will review the best type of metal panel to use based on the pitch and end-use of your building,

Engineering Considerations:

Ideally, your roof pitch will be the “sweet spot” between having a roof pitch that’s so shallow that the beared load is increased and having a roof pitch that’s so steep that wind uplift probability is increased—a factor which can also vary based on the building width. Specific engineering considerations with regard to roof slope include:

  • Snow Load Requirements: lower slopes create more load that the roof/structure must support. For example, when you have a flat roof and it snows, the snow will stay on the roof, adding more weight; on a sloped roof, a good amount of the snow will slide off of the roof, so the load will remain in an acceptable range the structure can support.
  • Wind Load: Preventing roof damage from high winds is largely dependent on roof geometry, slope and building material used. If outside air is allowed to penetrate a structure through cracks and other openings when wind flows over a building, the air pressure beneath the roof assembly increases. When this pressure becomes greater than the pressure directly above the roof (which happens as wind flows over a building), this can cause upward force on the roof system, leading to loss of structural integrity and significant damage. Wind uplift rating and minimum slope requirements are dictated by building codes in the market, so be sure to check with your local municipality for specific details.
  • Water Diversion: the steeper the pitch the faster it will channel and divert water, preventing it from pooling and causing other issue like mold, mildew and paint degradation. As with the snow load considerations mentioned above, the less additional weight burdening the roofing system, the better.
  • Minimizing Debris: steeper-sloped roofs also help minimize the chance that debris, mold and mildew have to build up on the roofing system. Unless there is a catastrophic weather event that drops large amounts of heavy debris—tree branches for example—there is a small chance that debris on a roof of any slope will exceed its ability to carry the load. However, because the more debris is able to slide down and off of a metal roof, the less that needs to be manually cleaned. Additionally, access to and cleaning the eaves of sloped roofs is much easier and less time-consuming that trying to perform the same maintenance on a roof with less slope.

The Strength of Metal Panels:

  • Tensile strength: This refers to the panel’s ability to resist breaking when it’s placed under pressure or tension—meaning the panel has a measured ability to bend under a certain amount of stress before it snaps. Galvanized steel panels can withstand between 50,000 and 80,000 pounds of pressure per square inch (50 KSI – 80 KSI)—significantly higher than the tensile strength of other roofing materials. Despite this, metal panels remain lighter and more impact resistant, keeping the likelihood and cost of repairs to a minimum. Check the tensile strength of your metal panels with the manufacturer and be sure to reference common testing standards related to roof slope, including ISO ratings and ASTM standards that test tensile strength.
  • Steel Hardness and Density: While it can generally be assumed that thicker-gauge panels are stronger, the type of building construction, location and end-use can affect the choice in panel thickness. Buildings such as pole barns, post-frame buildings, warehouses and garages can require roof panels to span longer distances and therefore require thicker panels as they are more structurally sound. These thicker panels will also aid in reducing the chance of collapse under the weight of snow and water—particularly when the roof pitch is low. For smaller buildings—like residences—with supporting trusses and purlins that are typically closer together, thinner panels can be used in conjunction with thicker trim for an economic, structurally ideal residential metal roofing system. See our blog on metal panel gauges for more.

Conclusion:

Following common standards, doing adequate research and conforming to manufacturer guidelines regarding slope will ensure you’re reaping the full benefit of your metal roof panel selection. For more information on metal roofs and to learn more about recommendations on roof slope, contact your local ABC representative today.

Additional Resources:

For more information on slope requirements, visit NRCA’s website. For more information on steep-slope metal roofs and their benefits, visit the Metal Construction Association’s website.

Preserve and Protect: Tips for Storing Metal Panels

Posted on by Tyler Roose

The decision has been made to invest in metal roofing or siding for a project or business. Now it is incumbent upon job site professionals, business owners and/or contractors to ensure proper care is taken to preserve and protect the integrity and attractive appearance of your metal roof and wall panels from damage caused by moisture, corrosive chemicals or improper handling. To mitigate any potential issue, it is necessary to take a few simple precautions.

 

Material Receiving Checklist:

When the metal panels arrive, the first thing that should be done is to make sure the panels haven’t been damage while in transit. The metal panel manufacturer should have ensured that all materials were loaded and packed properly, so before anything is removed from the delivery truck, be sure to check that nothing looks damaged. If damage is found, the shipment carrier should be advised before they leave the delivery site and a notation should be made on the bill of lading. Every metal panel manufacturer will have specific instructions on how defects/damage should be notated and communicated to ensure proper and timely resolution of any issues. If there are no issues and everything looks good while on the truck, carefully unload the materials and check for the two most common issues: moisture and denting/bending:

  • Moisture: After unbundling, if there is moisture, the panels should be elevated, separated and dried in a secure are not exposed to wind or other elements.
  • Denting/Bending: If found, the carrier should be advised and the manufacturer should be made aware of the issue as quickly as possible. You should take inventory of the materials delivered as well as pictures of any damage a notation made on the bill of lading.
  • Additional Transit Abrasion: If found, the carrier should be advised and a notation made on the bill of lading. Take pictures of any damage as soon as you find it (don’t move the panels before taking pictures) and notify the manufacturer as soon as possible.

If you do have any issues with material, it is important to contact the material manufacturer or the place of purchase immediately to ensure the issue is addressed appropriately.

Protecting the Finish Before and During Installation:

On a jobsite, reasonable care should be taken when handling painted surfaces during unloading, unpacking, moving, handling and/or installation in order to protect the finish. Although the paint coating is tough and does provide impact resistance, dragging a panel across the surface of another panel will almost certainly mar the finish.

Storage Considerations:

Finally, when storing panels before sale, delivery to a buyer or jobsite, or while on the jobsite waiting for installation, you will want to take special care to store the panels in a proper manner to ensure the integrity of the material is protected. Here are some challenges, solutions and caveats for a number of common situations.

  • Prolonged Storage: This is NOT recommended when panels are bundled or in a damp environment. If conditions do not permit immediate erection, extra care must be taken to protect the material from damage caused by moisture. See the manufacturer’s installation manual for proper storage of materials as well as the section below for more details.
  • Bundled Sheets: Only store in a DRY place. Sheets should be unbanded and stood on end at a slight angle against an interior wall that is not exposed to wind in order to allow for good air circulation. If it is not possible to store sheets in an upright position, strapping bands should be broken and sheets should be blocked off the floor with one end slightly elevated.
  • Stacked Sheets: These should be completely protected from the elements while maintaining good airflow in order to prevent condensation.
  • Panel Coverings: A properly draped canvas tarpaulin that allows for adequate air flow is an example of a good protective cover. Do not use plastic as it causes sweating and condensation to occur.
  • Trim Storage: Do not store trim with strippable film in the sun for long periods of time as the ability to separate the film and its adhesive from the metal will become unmanageable.
  • Preventing Corrosion and Galvanic Reaction:
    • In order to prevent unwanted chemical reactions and corrosion, do not store the metal panels with materials made of dissimilar metals (lead, copper, etc.).
    • Strong acids (jet fuel exhaust, commercial cleaners/solvents, etc.) can degrade the finish and void the manufacturer’s warranty.

Conclusion:

Preserve and Protect—and also Inspect. Keeping these common-sense actions and precautions in mind, there is no reason that the unique aesthetic qualities of metal panels should ever be compromised on a jobsite. For more information on metal roof and wall panels and to learn more about how to protect them throughout their lifespan, contact your local ABC representative today.

Metal Panel Material Delivery and Handling

Posted on by Ken Buchinger

Handle with Care

What You Need to Know about the Delivery and Handling of Metal Panels

As sturdy and resilient as metal panels are, there are a number of considerations that must be accounted for in order to maintain the integrity of the product, ensure on-time and cost-efficient delivery, and guarantee safe, effective installation. First, metal panels can do no good if they can’t be properly delivered to the jobsite—in pristine condition—where and when they’re needed. Second, once the panels do arrive, proper handling can be the difference between a successful job or problems before, during and after the fact. Here we’ll take a brief look at some of the main considerations related to the delivery and handling of metal panels that support the best possible outcome.

Delivery Considerations

The main conditions to confirm and questions to ask before placing an order and establishing delivery parameters include the following:

  1. Delivery location: Is delivery offered in your area or to your jobsite?
    • Is your location accessible? In other words, are there unsafe or impassible terrain or road conditions that prohibit the delivery of the materials?
    • Can you accommodate the size of the delivery vehicle? This includes making sure roads and entrances are large enough that delivery vehicles can pass through/access.
    • What are the delivery terms and conditions? Be sure you understand the requirements of your selected delivery method before signing on the dotted line.
    • Have you arranged for offloading or do you have people and equipment to handle this? Most delivery truck drivers are not equipped or trained in offloading metal panels, so it’s best to make arrangements with someone who knows how to properly get your material off of the delivery vehicle.
  1. Delivery method and carrier options
    • Do you know the options your manufacturer offers?
    • Have you confirmed the rates associated with each delivery option? As with traditional shipping, metal panel and component delivery costs can vary based on the type of delivery selected as well as your proximity to the place of origin.
  1. Proper packaging to provide protection against transportation damage
    • What packaging option is right for your order? You may want to consider the kind and quantity of material you’re ordering, its destination and end use when selecting how you’d like it packaged.
    • How much does packaging cost? This varies by the manufacturer. Some offer complimentary packaging, but it’s best to know about any potential costs beforehand.

Handling Considerations

Some key issues to bear in mind after delivery has occurred include:

  1. Exercise care when loading, unloading, storing and installing metal roof and wall systems.
    • Handle materials in such a way as to prevent bending, warping, twisting and surface/paint finish damage.
    • Do not drag panels on the ground or against each other; they should be picked up to be moved.
  1. Cutting metal panels
    • Follow manufacturer instructions at all times to keep from voiding the panel warranty. (ABC’s recommendation is to use a portable profile shear, especially for across-the-profile cutting of metal panels. Power shears, nibblers or hand snips that can follow the contour of the panel’s profile are also acceptable.)
    • Never cut the exposed end of a metal panel with a metal or abrasive saw. This will erode the Galvalume® coating, causing premature rusting at the cut edge.
  1. Worker Safety
    • Take appropriate precautions against potential hazards, which include:
      1. Moving and handling metal panels manually and mechanically, whether using conveyors, cranes, slings, forklifts and/or ladders
      2. Stacking metal panels/metal panel bundles
      3. Cut/exposed edges
    • Follow the manufacturer’s recommended safety measures, including any outlined protocols, recommended machinery, Personal Protective Equipment (PPE), etc.

Following the precautions provided above can help mitigate many potential pitfalls often faced. A little care upfront will inevitably lead to a much smoother process for all involved during every phase of the process. And always remember, the manufacturer is here to help; contact your local ABC representative today.