Flat Roof Insulation Slope Layout

Tapered roof insulation and crickets are designed to provide effective drainage for epdm tpo pvc and built up bur membranes.

Flat roof insulation slope layout.

To add a slight slope to an entirely flat roof to help shed water install tapered foam board insulation underneath a membrane roof. Save money by installing fiberglass insulation and framing out roof slope using osb board substrate. Polyiso xps and eps roof. A note to consider before construction.

If insulation is installed below the flat roof deck this is called a cold roof. From there the flat roof system you choose will determine the materials you apply. Flat over structural slope backwash detail backwash overlayed on adjacent flat over structural slope when roof drains are located a great distance away from a sloped roof edge more than 48 it can be more cost effective to use a tapered backwash. A properly designed tapered roof insulation system not only provides the necessary r value and the support for the roof system but it helps extend the life of the roof system because it provides.

The goal of tapered roof insulation systems is to eliminate ponding standing water on a membrane when the roof deck does not provide adequate slope. Some so called experts online may recommend the following claiming to achieve a greater r value at a lower cost. Roof insulation materials to avoid. Consider geography budget and use for the roof to determine the best option.