metal trim installation Archives

There are a variety of factors to consider when selecting metal roofing trim, including the application, roofing style and curb appeal expectations. Once you’ve made your selection, it’s important to ensure that the trim is properly installed to protect your building from water leaks.

Common Metal Roofing Trim

Before jumping into considerations for metal roofing trim selection, here are some of the most common types of metal roofing trim:

● Valley Trim: Used when two roofs are joined together to help drain off rain and snow.
● Transition Flashing: Used for roofs with two different pitches.
● Endwall/Sidewall Flashing: Used for projections that come out of the roof such as dormers, chimneys, lean tos and more.
● Gable Trim: Used to end panels on the roof.
● Eave Trim: Applied where the Fascia board is installed on the low side of the roof.

Metal Roofing Trim Considerations

For consistent performance, it’s ideal to purchase metal roofing trim from the same manufacturer that produced your metal roofing panels. This will extend the life of your roof panel and protect your structure from damage. It will also ensure that the paint systems are compatible. When selecting metal roof trim, look for a heavier gauge material to improve dent resistance. For added protection, look for steel panels that have a Class 4 Hail Rating and a Class A Fire Rating.

Selecting Trim for Your Metal Roof

Roof Style

To select metal roofing trim for your building project, you should examine the roof to determine the metal roofing style. Is it a fastened through or concealed fastener roof? What are your expectations for curb appeal? Do you want a rustic look or a touch of modernity?

Gutters
Consider whether or not your roof will have gutters as this will affect the selection and application of eave trim.

Ridge Caps
Ridge caps are installed on the peak of the roof to help protect against damage from exposure to wind, sun and rain. There are two types of ridge caps to consider for your metal roof: single bend and double bend. Single bend ridge caps are designed for use on homes with roof ventilation materials and provide a clean, modern look.. Double bend ridge caps on the other hand are more durable, making them ideal for post-frame applications.

Roof Overhangs
Do you have overhangs on your roof? For homes and buildings that have ventilation on the eaves, consider adding ventilation material in the peak of the roof . For non-vented overhangs, use a closure to keep out weather and critters.

Roofing Composite
You will need to examine any existing roofing composite materials to determine whether to keep it or remove it. Additional framing material might be needed if installing panels over the existing roof. This will affect the selection of gable and eave trims.

To learn more about how to select metal roofing trim, reach out to your local ABC representative.

Why Choose ABC

At ABC, we offer a wide variety of trim to accommodate most applications. If none of our standard trim offerings fit your project, we can manufacture custom trim designed to fit your unique specifications. We offer a broad color palette for our metal roof panels, trim and gutter systems so you can create eye-catching curb appeal.

Browse our selection of metal roofing trim or contact a sales representative today.

Selecting the right trim and installing it correctly is crucial to ensuring metal buildings look good and stay dry.

The success of any metal panel roof depends heavily on the trim. Aside from providing an elegant, finished look, these hard-working components serve as part of the flashing system by sealing joints, side seams and end laps against leaks. The right trim installed in the right manner will help keep metal buildings dry and good-looking for years to come.

Where is trim used?

When most people think of trim, the pieces that come to mind are those installed around a roof’s perimeter: the ridge, or peak; the eaves, or lower edges; and the rake, or side edges. But just as important are those less noticeable pieces installed wherever there’s a change in roof slope, as in a valley, or where the roof meets a vertical surface like a dormer wall. Valley and dormer trim play particularly tough, yet vital roles because they have to prevent water trapped by leaves or snow from backing up into the structure. This is just as important on metal walls where trim sheds water away from windows and doors, and waterproofs inside and outside corners.

Trim performance and aesthetic

In addition to performing well, the trim also has to be attractive, and trim thickness can be a major factor in how good the roof looks. Although the trim pieces are usually the same thickness as the panels, as we mentioned in our post on Metal Panel Gauges, it can be helpful to step up to something thicker, which is less likely to telegraph imperfections in the underlying roof or to dent if the installer mistakenly over-drives a screw. Additionally, a heavier-gauge trim can help prevent “Oil-canning”—the deformation of sheet metal—which can be common on trims applied to corners and door jambs. Using A 26-gauge trim piece on a 29-gauge roof may even allow for the selection of thinner roof panels, adding to homeowner satisfaction without adding much to—and maybe even reducing—the cost.

Installation factors make a difference

Trim can only succeed at its job when installed in the proper sequence. On a roof, the eave and valley flashings must be put in place before the panels, while the rake and ridge pieces wrap around the tops of the panel edges. Done right, this sequencing creates overlaps that naturally shed water. The proper overlaps also protect the roof against wind-driven rain by ensuring that any water that sneaks past the trim during a storm hits an underlying piece of metal and drains back out to daylight so it can be evaporated. As an added layer of redundancy, the installer will include a sealant tape between the trim pieces and the panels. These serve as gasketing to keep water on the outside. Additionally, trims that are hemmed at the edges can add rigidity to and fight corrosion of the factory cut edge.

Even the highest quality materials will not perform optimally unless installed correctly. To ensure each piece of trim is perfectly straight and square from end to end, with no bumps or dips, the installer will usually have someone on the ground confirm that everything looks right before fastening each piece.

For information on ABC’s trim, including diagrams and installation manuals, visit our website or contact a local sales representative today.

Tag: metal trim installation

Selecting Metal Roofing Trim