Flat Roof Membrane Detail

Also known as the built up roof bur this type of flat roof features three or more layers of waterproof material mixed in an alternating fashion with hot tar and a layer of smooth stone like gravel.

Flat roof membrane detail.

Available in 9 in. Although tpo is a vinyl type of material we will also include it as part of this article. Underneath the basics flat roofs are usually constructed with a ceiling nailed to joists which support a deck usually wood in residential construction a vapor barrier insulation and a roof board. We also cover spray applied foam and liquid roofing options.

Membrane roofing is often used on commercial flat roofs. Of course flat roofs are not flat but have a very slight roof pitch of between 1 4 to 1 2 per foot. What types of penetration are typically required in flat roofs. The materials on flat roofs are mostly rubber.

There are three types of roofing systems used for rubber membrane roofs. Common penetration details include soil vent pipes hot pipes from boiler flues or log burners electrical cables for air conditioning units extraction ducting and tracks for mechanical window cleaning systems. The rubbergard max epdm membrane is an internally reinforced cured single ply roofing membrane that is designed to combat roof tears and punctures and provides superior resistance to wind forces. Based on the grace ice and water shield technology grace roof detail membrane is a flexible product that conforms tightly to common roof details such as skylights chimneys and dormer walls.

Modified bitumen torch down roofing. However their popularity does not mean it s the best type of roofing membrane but rather the. Gaf tpo roofing membranes include. Gaf analyzed membrane samples from roofs across the us and studied thickness over scrim surface cracking and the ability to repair aging tpo membranes.

W it is the optimal choice for valleys and transition areas such as ridges rake edges and drip edges. A recent study of everguard tpo roofs installed between 8 and 16 years ago found they all performed above astm standards for newly manufactured tpo. From there the flat roof system you choose will determine the materials you apply. Just enough slope to drain water but also flat enough to be a problem if not constructed properly.

As you might imagine this is the cheapest version possible and good for covering a shed. Epdm rubber membrane roofs are the most popular of all the membranes.