Flat Roof Insulation Slope Layout

If insulation is installed below the flat roof deck this is called a cold roof.

Flat roof insulation slope layout.

Good questions regarding water and low slope membrane roofs where slope in the structural roof deck may not be adequate. 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. A note to consider before construction.

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. Tapered roof insulation and crickets are designed to provide effective drainage for epdm tpo pvc and built up bur membranes. Consider geography budget and use for the roof to determine the best option. From there the flat roof system you choose will determine the materials you apply.

Polyiso xps and eps roof. Tapered backwashes can also help reduce the insulation height at the roof edge. The crickez system helps to simplify roof crickets with quicket. 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.