Flat Roof Membrane Detail

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.

Flat roof membrane detail.

Modified bitumen torch down roofing. Epdm rubber membrane roofs are the most popular of all the membranes. 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. Gaf analyzed membrane samples from roofs across the us and studied thickness over scrim surface cracking and the ability to repair aging tpo membranes.

What types of penetration are typically required in flat roofs. There are three types of roofing systems used for rubber membrane roofs. Membrane roofing is often used on commercial flat 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.

Although tpo is a vinyl type of material we will also include it as part of this article. As you might imagine this is the cheapest version possible and good for covering a shed. Just enough slope to drain water but also flat enough to be a problem if not constructed properly. However their popularity does not mean it s the best type of roofing membrane but rather the.

Of course flat roofs are not flat but have a very slight roof pitch of between 1 4 to 1 2 per foot. 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. 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. The materials on flat roofs are mostly rubber.

We also cover spray applied foam and liquid roofing options. Rubber membranes are part of most flat roofs. Gaf tpo roofing membranes include. Smooth tpo fleece back tpo self adhered tpo tpo colors extreme tpo.

From there the flat roof system you choose will determine the materials you apply. Roof membranes discussed in this article include built up asphalt tar and gravel modified bitumen and single ply membranes like epdm pvc tpo and kee.