A Simple Solution to Metal Panel Condensation

If you’ve ever gone outside before sunrise, you’ve likely noticed dew on the grass or on your car windows. This is condensation. While we may have learned the basics of this naturally occurring phenomenon in science class, we may need a quick refresher.

Condensation occurs when there’s more water vapor (the invisible, gaseous phase of water) than the air can hold. When the water vapor is cooled off or compressed to its saturation limit—at which point the vapor’s molecular density reaches its maximum threshold—it turns into liquid. Warm air can hold more moisture, but as it cools it reaches its saturation limit and water droplets form. While not a problem on the grass or your car (once you wipe the water away), condensation on metal panels CAN be a problem for your customers. The good news is there’s a simple solution.

ABC Drip Stop for metal panel condensationWhat causes condensation on metal panels?

When temperature and humidity conditions reach dew point, moisture can condense on the underside of metal roofing and potentially cause water damage to the inside of your customer’s building. Those drips from ceilings and surface moisture occur when warm air comes in contact with the cooler roofline or walls.

High interior humidity—a common cause of condensation in metal buildings—can result from heating and air conditioning systems, how the building is used, gas-fired heating components, improper construction techniques or even human respiration, as these all give off moisture vapor.

Effects of condensation on different types of panels:

If there is an abundance of condensation, water droplets will form and can cause damage. In metal buildings, there are a few possible consequences of trapped moisture in wall and roof systems:

  • Corrosion of metal components, even on surface-treated metal: When exposed to moisture, metal components can oxidize and weaken, decreasing the life of your customer’s building.
  • Degradation/ reduced effectiveness of the thermal performance of insulation
  • Mold or mildew growth, which can cause unpleasant odors and increase health risks, particularly for those with allergies or asthma
  • Insect infestations

Note: The probability of significant problems will depend on the location and usage of your customer’s building.

Controlling Condensation: What is the Solution?.

Traditionally, condensation is managed by insulating the metal roof so that the panel temperature never reaches the dew point. This is often accomplished using vinyl-backed fiberglass insulation to prevent humid air from coming into contact with the cooler metal roof (which may be at or below the dew point). If your customers are heating or cooling their building, adding insulation is certainly worth consideration. If they aren’t, there is another option to consider besides the installation of vinyl-backed insulation.

Your customers can consider installing Drip Stop, a patented condensation control membrane, to prevent damage from moisture. Drip Stop (manufactured by ABC) is a felt-like material with a rubber backer that can be applied to the back side of metal panels. The material literally traps and holds the moisture resulting from condensation. When conditions change, the ambient air temperature usually rises, thereby raising the dew point. The moisture is then released from the Drip Stop material back into the air in the form of normal humidity. Drip Stop can be applied to the back of metal coils (either Galvalume® Plus or painted) and then the metal can be roll-formed onto panels.

ABC Drip Stop for metal panel condensation

What are the benefits of this alternative condensation control method?

Drip Stop offers several advantages for your customers:

  • Durability: Drip Stop is a very tough, light gray anti-condensation felt that is not susceptible to ripping, tearing or deterioration unlike standard insulation and vapor barriers.
  • Low Maintenance: Drip Stop resists dirt and grime, is antimicrobial and is very easy to clean with a hose or pressure washer.
  • Corrosion Protection: The rubber backer on the material helps protect the back side of the panel from corrosion (although there is no protection at the panel’s cut edges).
  • Easy to Handle: There is no need to roll a vapor barrier over purlins and then seal with tape, which can reduce labor hours and cost. Additionally, the use of Drip Stop is not hindered by windy conditions.
  • Safety and Insurance: The material is approved for smoke generation and flame spread per UL® 723 for insurance specifications.
  • Acoustic Benefits: Drip Stop helps dampen sound from either inside or outside the building.
  • Versatility: Drip Stop is approved for use in residences, warehouses, industrial plants, sports arenas, schools, storage buildings, garages, animal confinement facilities and more.
  • Cost-Savings: Drip Stop is up to 25 percent less expensive as compared to traditional solutions.
  • Warranty-Backed: Drip Stop features a 20-year adhesion warranty to ensure longevity.

The Bottom Line:

There’s no need for the damaging effects of condensation to put a damper on your customer’s metal building project. With a simple solution like Drip Stop, you customers can protect their assets and prevent costly and time-consuming repairs.

For more information on Drip Stop and how it can be applied to ABC’s PBR, Imperial Rib® and Retro-R® panels, visit our website or contact your local sales representative.

Maintaining, Cleaning & Repairing Metal Panels

Understanding the maintenance requirements of your metal panels is essential to maximizing the longevity of your investment with the least amount of hassle. While metal panels have been engineered to provide decades of trouble-free protection, they can suffer damage from the build-up of debris as well as storm-related traumas like hail stones, falling branches and ice dams. To extend the lifespan and strength of metal panels, maintenance consists mostly of preventing and correcting these issues.

metal roofing maintenance tips

 The importance of regular inspections

Regular inspections are critical to identifying damaged panels and accumulated debris that can trap moisture, causing corrosion over time. To prevent this, a visual inspection should be performed in the spring and the fall of each year, as well as after major weather events to identify issues. Take a walk around the structure and look for leaves, branches and other debris piled up on the roof, including in valleys, gutters and downspouts, as well as behind chimneys and/or other protrusions. While you can perform this type of inspection yourself, please keep in mind that metal panels—particularly metal roofs—should be professionally inspected every four to five years depending on your geographic location. If you live in a coastal or humid area more prone to corrosion and rust, professional inspections should be done more frequently to prevent the rust from spreading and causing structural damage to the panels.

In addition to debris, keep an eye out for scratched or dented areas, as well as for loose screws and seams that look like they are separating. (If you can’t make out the details from the ground, try using a pair of binoculars.). Use the manufacturer’s recommended touch-up paint to correct scratches as they can quickly degrade the surface protection and jeopardize the longevity of metal panels. If the panels have separating seams or holes, first check to see if the repair is partly or fully covered by your warranty. Unless you are experienced in metal roof repair and possess a thorough knowledge of the products and techniques that can be used without voiding the warranty, it is recommended that you engage a metal panel repair specialist to make the repairs. If you decide to undertake the work yourself, it is also important to remember that these fixes are, at best, temporary and should be addressed by a professional recommended by the metal panel manufacturer.

Cleaning metal panels

Keeping metal panels clean is one of the best ways to ensure they last as long as possible. When cleaning metal roofs and walls, using a non-pressure cleaning method with detergents recommended by the metal panel manufacturer is ideal. It is not advisable to use metal tools such as rakes to remove debris. This is likely to scratch the paint, reducing the panels protection from the elements and other damaging factors. Using a leaf blower to remove debris is a common choice, but a long-handled push-broom or a telescoping pole with a window cleaning brush will also do the job. Ideally, the tool should be one that lets you do the removal from the ground, but if you absolutely must walk on the roof then only step on the flat areas. If there are areas you can’t access yourself—particularly slanted areas that have been made slippery with cleaning solutions—hiring a professional service to do this once or twice a year is the safest option.

To reduce the chance of further damage and keep your panels cleaner over longer periods of time, trim tree branches as far back from the building as possible. This is especially important for large, unhealthy branches that could break off during high winds and cause damage.

Proper snow removal

There are—of course—considerations that must be made for metal buildings located in colder climates. After a winter storm, it’s a good idea to remove standing snow from the roof. This is doubly important on older homes where poor attic insulation can lead to ice dams. An ice dam forms when heat escaping from inside the attic warms the roof and melts the bottom layer of snow. The snowmelt then re-freezes, creating a dam that traps water which can work its way into seams between panels and around flashings.

Warranty considerations

It’s always smart to reference the metal panel manufacturer’s warranty to be sure you don’t use any products or tools that will void your warranty. They should also provide instructions and advice specific to the panels and application(s) you’ve selected to ensure you get the most out of their products with the least hassle.

For more information on metal panels, check out ABC’s FAQ page. For more on our metal panels and accessories, please visit our product pages or contact your local representative today.

Metal Roofing Gauges: What Are The Best Gauges For Metal Roofs?

When your customers decide to use metal panels for their building project, they’ll need to make several decisions to choose the best panel. One of the first decisions they’ll make is what gauge or thickness they need. There are a variety of metal roof and wall panel profiles to choose from, and they are all available in several gauge thicknesses … but what does that really mean to your customers and how does that affect your business?

Metal Panel Gauges: Are you getting what you pay for?

Metal Panel Gauges Deciphered

U.S. manufacturers express the thickness of metal panels as their ‘gauge’, with 22-gauge being the thickest and 29-gauge the thinnest of traditionally-sold metal roof and wall panels. Each gauge represents a nominal decimal range. For example, a 26-gauge steel panel can range between 0.0179 and 0.0217 inches thick according to a University of North Carolina at Chapel Hill resource.

This means that while a 26-gauge panel from one manufacturer could measure 0.027 in. thick, a 26-gauge panel from another manufacturer could measure only 0.0179 in., but both are sold as 26-gauge panels. Although those seem like small numbers, they represent a noticeable difference in panel stiffness and strength.

So how do you and your customers know if the metal panel manufacturer has used thinner sheeting and made up the difference with a coat of paint? When ordering inventory, you should look beyond the gauge number to the manufacturer’s specifications on metal thickness. This will give you peace of mind that you’re providing your customers with the gauge they’re paying for and the quality they need to get the job done.

 

Costs of 26-Gauge Panels vs. 29-Gauge Panels

Expect to pay more for thicker panels. The cost of a 26-gauge product will be about 15 percent higher than a 29-gauge with the same profile from the same manufacturer. While some people insist that the extra cost is always worth it, that may be misleading. Yes, thicker panels are stronger, but the importance of that added strength depends on the type of building construction as well as the customer’s priorities and location.

 

When To Choose a Thicker Metal Roofing Gauge

There are instances where thicker gauges always earn their keep. The most common of these is the post-frame building, or pole barn: an open-framed structure used for barns, garages and warehouses. Post-frames generally lack structural sheathing, so the roof and wall panels must span between the supporting trusses or purlins. Because 22-, 24- or 26-gauge sheeting is thicker, and will, therefore, remain more structurally sound over a longer span than a 29-gauge, the building needs fewer supports, which saves your customers money. For post-frame structures like this, it is important for your customers to consider the potential snow load the roof may need to support when choosing the metal panel gauge. Lighter-gauge (thicker) panels may save your customers from structural collapse in the winter months!

Lighter gauge (thicker) metal is also more forgiving of installation errors such as the over-tightening of screws, and it won’t be as likely to transfer bumps and waves in the sheathing. (The latter is more likely when re-paneling an older home.) Thicker trim pieces will also lay more accurately, so some homeowners and contractors opt for 29-gauge roof and wall panels with 26-gauge trim, a combination that is common and cost-effective.

 

When To Choose a Thinner Metal Roofing Gauge

Span isn’t always a concern in the residential market. Nearly all homes have a layer of plywood or oriented strand board sheathing covered by a weather-resistant barrier. The metal panels are affixed to the sheathing and serve no structural role in these instances; their job is to keep the sheathing dry. A quality 29-gauge panel is more than adequate for this—which is why it’s used on nearly 80 percent of homes with metal panels.

Despite this, thicker (lighter-gauge) panels can make sense for buildings in hail-prone areas, but not because of structural integrity. A 29-gauge metal panel can have the same impact-resistance rating from Underwriters’ Laboratory (UL) as a 26-gauge panel; the advantage of thicker metal panels in this case is that they are less prone to denting. If your customer lives in a place like Cheyenne, Wyoming (the hail capital of North America) and is concerned about long-term appearance, thicker panels may be the better option.

 

Let ABC Help You Choose the Right Metal Panel Gauge!

For more information about metal panel gauges, check out our panel selection chart or contact your local ABC representative today. Additionally, use our online ordering tool to find accurate pricing, create quotes and place orders for metal building products anytime, anywhere and from any device.  If you don’t already have an account, register for access today!

DISTRIBUTORS: Shop online at shop.abcmetalroofing.com!

Your Guide to Steel-Curtain Roll-Up Doors

No building is complete without a door. In this blog, we investigate steel-curtain roll-up doors and how they deliver form and function across a wide variety of uses.

What are Steel-Curtain Roll-Up Doors?

You see them everywhere. They’re used at your local schools, recreation and retail centers, and government, medical and office buildings. They provide access and security for storage units whether applied in backyard sheds, residential garages or commercial storage facilities. And, they are also an integral part of agricultural structures, transit stations, freight buildings and warehouses.

Made of a curtain (sheet) of durable, secure steel and designed to provide quick, easy access to both commercial and residential buildings, these doors open by traveling vertically, but gather into a roll at the top of the door instead of sliding along tracks. And while they can be used in a myriad of applications, with so many door options available in the marketplace today, why are so many people opting for steel curtain roll-up doors?


Why Steel Roll-Up Doors?

Long-term Value:
Roll-up doors made of steel are generally less expense to purchase initially and they save money over the course of their lifespan. Not only do they last longer, but they also require fewer, less expensive repairs and are more durable than wood, aluminum or fiberglass products—particularly in challenging environments. In addition, steel is more energy-efficient, saving on heating and electricity costs throughout the year.

Security:
Exterior doors are inherently the most vulnerable points of many buildings, so reducing the likelihood of theft, fire, vandalism and contamination is the best way to keep your property secure. More impenetrable than doors made from wood, fiberglass or aluminum, steel doors with standard stainless steel latches are better able to protect against unwanted entry, fire, noise, vandalism and contamination from exterior elements, providing reliable security and peace-of-mind.

Durability:
Steel is a resilient material manufactured to protect against extreme weather conditions and harsh usage environments. Unlike doors made from other materials, steel roll-up doors can endure the wear and tear of heavy traffic usage and can be outfitted with rust-resistant components including spring coatings and bottom bars to further extend their longevity.

Longevity:
While wood doors are susceptible to warping and rotting, aluminum doors can quickly become dented and fiberglass can easily crack—all of which require replacement—with proper installation and maintenance, metal doors can last 30 years or longer. The high-quality primers and paint coatings used on steel doors protect against chipping and scratching, keeping the doors looking better longer.

Easy Maintenance:
Steel roll-up doors require little-to-no maintenance and are easily replaceable—making them one of the most reliable, cost-effective options in the industry. ABC’s doors are unique in that they feature gear-driven tensioning brackets that ensure safe and easy adjustments that can be made on site and with minimal down time.

Appearance:
Steel roll-up doors are available in a wide variety of sizes, styles and colors. In addition, manufacturing improvements and advances in coating and paint products enables customization to suit even the most unique aesthetic requirements.

Space-Savings:
Because roll-up doors open vertically and are gathered into a roll instead of sliding along tracks, they take up little overhead space while enabling convenient and easy access.


How to Select the Right Steel Roll-Up Door:

Whether you are replacing doors on an existing building or sourcing them for a new project, be sure to consider the below factors before purchasing:

Use:
The door you need will depend on its intended use. Light-duty doors are manufactured to meet the specific and unique demands of small structures, portable buildings or recreational facilities while heavy-duty doors meet the needs of more demanding environments like commercial freight and utility buildings, warehouses and agricultural facilities.

Environment:
It is vital to consider your geography when selecting steel roll-up doors. If your project is located in a region susceptible to high winds from weather events including hurricanes, tropical storms and tornadoes, a wind-rated door tested in accordance with International Building Codes and that complies with your insurance requirements should be considered. Check both local and national building codes to understand if you need wind-certified doors, which can dramatically reduce maintenance and replacement costs as well as minimize downtime.

Warranties:
Be sure that you are familiar with and fully understand the warranty options available on the products purchased. It is common for doors and door components to be covered by a product warranty, while the coil coatings and paint are warranted under a second that should include considerations for film integrity as well as both chalk and fade.

To learn about ABC’s roll-up door solutions, visit our Roll-Up Doors product page or contact your local sales representative.

Decoding Your Warranty: Paint Chalking

The third and final element of our “Decoding Your Warranty” blog series covers paint chalking. As with fading, chalking is an expected occurrence with any paint system that is subjected to outdoor exposure, and while it may be preferable to other issues such as cracking or peeling, it is still important to the metal roofing industry and its customers. As a result, similar questions should be asked about how this is addressed in paint system warranties to ensure chalking isn’t the cause of premature damage to your metal roof system.

What is paint chalking?

Also referred to as “powdering”, chalking happens when the resin (binder) of the paint system is compromised. The resin is the substance that holds the paint pigment together. It also ensures the color is evenly distributed and provides glossiness, durability and flexibility. In addition, resin has the very important job of adhering the pigment to the metal surface it’s applied to and protecting the finish against damage.

When the resin at the surface of the paint finish deteriorates, most often as a result of exposure to ultraviolet (UV) rays, the embedded pigment particles lose their adhesion to the paint film (resulting in color fading) and the resin particles take on a white (chalky) appearance that is easy to wipe off of the surface. In addition, chalking can erode the film resulting in a loss of substrate protection and run down onto the underlying structure, further degrading the appearance of your structure.

How can you protect against paint chalking?

Climates that are exposed to more intense UV rays for longer periods of time will experience chalking sooner as the environment plays a big role in how painted metal will perform. While you may not be able to control how much UV or moisture exposure your roof gets, you can choose a paint system that is not over-thinned or over-spread and that uses high quality components. ABC’s Signature® 200 system incorporates a 30 percent SMP Resin—one of the strongest in the marketplace—to help reduce the amount of chalking experienced.

Similar to the fading section of the warranty, paint system warranties allow for an acceptable amount of chalking. Chalking is measured in accordance with the standard procedures as defined by the “Standard Methods of Evaluating Degree of Chalking of Exterior Paints”, ASTM D4214. ABC guarantees the level of chalk on vertical panel applications will not chalk in excess of a numerical rating of eight (the higher the numerical rating, the better) for 30 years for our Premium paint system colors and 25 years for our Select40 paint system colors. For non-vertical panel applications, ABC guarantees a rating of 6 for 30 years for our Premium paint system and 25 years for our Select40 paint system. Consumers should be aware of these numbers, and expect them to be expressed in sample warranties.

Check out ABC’s metal color resources and warranty information to learn more!

 

Missed parts one and two of the “Decoding Your Warranty” blog series? Start reading now!

MCOMP-108 ABC Warranty Blog Series_CTA Button Graphics-PART1

Decoding Your Warranty: ABC Paint Film Integrity

With a 40-year limited paint system warranty, the ABC Signature® 200 offering represents one of the most sophisticated siliconized, modified polyester (SMP) paint coating and warranty protection products in the industry. But do you understand what it means to have a 40-year warranty?

To comprehend your coverage options, you first need to know what a “40-Year Warranty” means in the industry. This limited warranty covers the film integrity of the paint system used on your wall and roof panels in case of cracking, checking and peeling for a period of 40 years. Most manufacturers of metal roofing have this basic warranty available, however—as with any warranty—the most miniscule details can impact the overall effectiveness and value.

To select the right protection for roofing or building projects, ask questions to confirm your understanding of the warranty coverages and options before purchase. Some pertinent questions to consider include:

  • Are there any exceptions to the warranty?
  • Are all colors covered?
  • What are the limitations of the warranty?
  • What are the financial implications of not abiding by the warranty?

The answers to these questions and additional coverage information should be readily available and provided to you by the supplier. Keep in mind that all 40-year warranties—while generally similar—are not equal; it’s essential to thoroughly investigate the product’s warranty details to ensure the best property protection is received.

We encourage you to view ABC’s warranties on our website. You can also learn more about the proper handling of ABC’s metal panels by reading the product installation manuals. The precautions in the manuals can help save time, heartache and, of course, money.

Warranty Image_RevA_032016

What’s next?

How well paint adheres to the substrate is not the only concern for many metal wall and roof panel consumers; homeowners often ask us about the fading of the paint system and the factors that should be considered when purchasing.

In the next installment of our “Decoding Your Warranty” blog, we will discuss fading in more detail and provide insight into this commonly overlooked factor in warranties.

MCOMP-108 ABC Warranty Blog Series_CTA Button Graphics-PART2

Three Reasons To Install A Metal Roof This Winter

Patching up a leak or replacing your roof soon? During the winter months, harsh weather and changing climates can greatly affect a roof’s life span and performance. In addition to low maintenance throughout the year, metal roofing provides even more benefits during the colder months.

Metal Roofing for Cold Climates: Winter Performance

A few of the benefits metal roofing offers in the winter include:

  1. Metal roofing reduces the snow burden.

    Snow and ice can cause major damage to a structure, especially if the weight burden increases during harsh winters. Metal roof panels are manufactured to resist cold weather damage and are installed to gradually shed snow and ice. Snow guards can help ensure snow safely slides off in small amounts, reducing the chance of injury to those below.

  2. Metal roofing cuts the cost of heating bills.

    Metal acts as an insulator and allows both cool and warm air to circulate without escaping–a benefit realized year-round. This results in lower energy costs throughout the year, and helps your home stay cool in the summer and warm in the winter.

  3. Year-round installation means you don’t have to wait until spring.

    The busiest times of the year for contractors is in the spring, when people are preparing for hurricane season, and in fall, when most homeowners want to fix damages before the colder months arrive. Many people assume that metal roofing can’t be installed during winter because of snow and ice, however, this assumption is false. In fact contractors are more likely to be available and to offer lower pricing during this time.

Investing in a metal roof this winter is a decision that will continuously give back financially and environmentally.  With installation available throughout the year and benefits that help you instantly save, why wait? Reach out to your local ABC representative to learn more!