Though flat roofs are not really flat, their design isn’t logical from an architectural standpoint. Flat roofing is horrible for draining rainwater or snow melt, and is historically notorious for its propensity to leakage. Still, with modern materials, flat roof detail can last nearly as long as sloped ones.

With flat roofing, joists have to be longer and closer together to support snow or large amounts of rain. Rubberized underlayment helps waterproof flat roofing detail. Gradual slopes in the corners allow water to drain away. These are part of the flat roof detail that helps modern flat roofs withstand precipitation. Rubber is glued up the walls on the flat roof’s sides, to help keep water from draining down the walls into the structure. This rubber is then tightly secured to keep the flat roofing from falling off.

Flat Roof Detail Issues

A number of different issues need to be kept in mind when designing a flat roof:

• An incline of 1:40 should be the minimum for all “flat” roofs.
• Assure that the flat roofing materials adhere well to the roof.
• Avoid penetrating the roof covering wherever possible.
• Simple flat roof details and designs mean less chance of error.
• Three layers should be used to strengthen the flat roofing materials against puncture and to keep out moisture.

Types of Flat Roofs

There are a variety of different types of flat roofs. Here are a few:

• Asphalt built up flat roofing is the most common type. Although they break down slowly due to heat and water, flat roof repair is easiest with this type.
• Coal tar pitched built up flat roofs use coal tar, which is excellent for waterproofing, although coal tar is also very toxic.
• CPSE synthetic rubber flat roofs can either be welded or glued with a solvent based adhesive.
• Polyester membrane flat roofing is the most modern type. These flat roofs can last nearly as long as a sloped roof.

Flat Roof Repair

Flat roof repair is very different than how you’d fix a pitched roof. It takes someone knowledgeable about flat roofing to fix them. For this reason, home improvement professionals recommend that a specialized flat roofing company do your flat roof repair. Most companies that specialize in flat roof repair will work almost exclusively with commercial buildings, so don’t be surprised to find them under commercial roofing companies.

Failing to repair flat roofing will result in indoor damage to the structure. Patching flat roofs is only a temporary solution. There are solutions to this problem, though they cost money. Replacing old, outdated flat roofs with modern polyester reinforced membranes will offer a modern fix to the flat roof design. This flat roof repair won’t only helps keep out water, but will also protect flat roofs from the sun’s destructive UV rays.