Metal Roof Substrate

The most popular steel substrates in the metal roofing and siding industry are galvanized and galvalume.

Metal roof substrate.

Galvalume and galvanized are two commonly used substrates in the metal roofing industry. Exterior grade structural plywood can be used as a flat or pitched roof substrate and receive either single ply or metal shingle or metal shingle roof panelled cladding across a multitude of settings. Insulation membrane modified bitumen and ssr panels. It also can provide a surface to which the insulation above can be adhered.

Non structural metal roofing requires a solid substrate beneath it typically plywood oriented strand board or a metal roof deck. This deck provides resistance to the positive and negative building loads. Choosing proper substrates for metal roofing systems importance of substrates. The most common use of a substrate board is on steel and wood decks.

3 wide rib panel. Metal roof deck is the structural component that provides support and mounting surface for roof building materials i e. In stock at store today. Both galvalume and galvanized are good substrates for metal panels.

The two main types of substrates used with metal roofing systems are open framing and solid. Top sellers most popular price low to high price high to low top rated products. Structural metal roofing is broken down into low slope and steep slope categories. Structural metal roofing attaches directly to purlins or lathe boards and does not require any sort of solid support beneath it.

Metal roofing is typically installed over a solid substrate. Galvanized substrates are coated in zinc while galvalume substrates are coated with an alloy of zinc plus aluminum. The most common deck material is carbon steel with a galvanized coating. Metal roofing does not attract lightning.

On steel roof decks the substrate board provides a continuous smooth surface to place an air or vapor retarder onto. Galvalume carries a warranty from the steel mills that protects against perforation or rust through of the substrate but not surface rust.