Flat Roofing Process

The hot applied asphalt or coal tar pitch blends with the bitumen soaked roof felt and creates a monolithic roof membrane.

Flat roofing process.

Things you ll need small spade hammer screwdriver bolster hammer screwdriver or drill screw with a chisel attachment wallpaper scraper epdm rubber water based deck adhesive large surface adhesive roller. Bitumen roofing rolls can be large and heavy so get help carrying them up to the roof if necessary. Start at 1 end of the roof and unroll the bitumen to the other end. Add the plywood once you ve added the framing it s time to add a layer of 5 8 inch plywood sheathing.

This is very important because only when you have a solid base for your roofing structure your shingles will stay intact. The goal of this article is to help building owners architects and contractors decide which commercial roofing options are right for each unique project. Asphalt shingles are known for being one of the simplest types of roofing materials to install. Prepare a valley between joined roofs by cutting a strip that is 18 inches wide and covers the entire length of the valley.

Roll modified bitumen roofing sheets over the entire roof. Every roofing replacement project begins with a thorough inspection of the wood decking. The roof felt asphalt tar layering is repeated in overlapping layers until the assembly is two to fours plies in thickness. Frame the roof one important and perhaps not so obvious fact is that a flat roof is not actually flat.

Clean the existing roof system as needed including flashings boots vents and rotted wood areas. The 8 step process for diy installation step 1. In addition you will still need tools such as a measuring tape drill and utility knife along with the following. First lay a run of starter shingles along the bottom of the roof and nail them firmly into place using roofing nails a couple inches up from the edge of the roof.

Remove and replace any and all rotted fascia. Remove and replace any and all rotted roof sheathing throughout the entire roof area. Nail it in place with roofing nails that penetrate at least 3 4 inch into. Today s variety of flat or low slope commercial roofing options roof pitches ranging from 12 to 3 12 is no longer simple and has grown considerably in the last 50 years.

Roofing timber steel joists plywood exterior covering such as epdm or modified bitumen water based adhesive foam with fibreglass backing insulation warm flat roofing.