Steps For A Modified Flat Roof

The goal of this article is to help building owners architects and contractors decide which commercial roofing options are right for each unique project.

Steps for a modified flat roof.

If you are using a flat concrete roof then you are using a roofing system that holds up against heavy winds. Mount a third truss in the same manner and begin adding thin long wood planks known as purlins perpendicularly across the tops of the trusses as close together as specified by the roof design. If you want a diy flat roof here are the steps to follow. The risk of a fallout decreases when you opt for a.

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. 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. Using cap nails secure the felt in rows along the top and bottom of the sheets as well as a row in the middle. At one time built up roofs burs once represented half of all flat roof coverings.

Flat roofs are durable. Modified bitumen roofing may have a granular surface as shown here or it may be smooth. But flat roof is a convenient term for a class of multimembrane systems with very shallow pitches. Use flashings approved by your building department.

No roof should be completely flat or it won t shed water. One important and perhaps not so obvious fact is that a flat roof is not actually flat. These are the least popular flat roofing system discussed but are still pretty common and have a good reputation. Ensure your flat roof is entirely clear of debris.

Consult with your inspector to see whether you need to tear off the old roofing or if you can reroof over the existing roofing. If the surface is smooth you may be able to reroof using sheets of modified bitumen or epdm rubber roofing. That would be impossible since a flat roof would receive so much weight from water buildup and snow buildup that it would not be long lasting. A flat roof is water resistant so you do not have to worry about water damage.

Burs consisted of alternative layers of heavy building paper and hot tar. Flat roofs are hard to replace. But now flat roofs often are constructed with fewer layers because of improved waterproofing technology. If your flat roof is covered with gravel you will likely need to hire a professional to reroof it.

Screw on wood planks as temporary bracing on top of the two trusses using screws and a power drill. Install drip edge flashing and apply a primer so the roofing will adhere to it. Some observers suggest it s harder to replace a flat roof than a traditional pitched shingle roof because of the labor required to remove its layers especially on older flat roofs. The heating process allows the material to adhere to the roof surface.

Many times modified bitumen roofs are installed by rolling out the roofing material after it has been heated with a blow torch.