Flat Roof Insulation

The basic decision to make when it comes to thermal insulation of a flat roof is the material.

Flat roof insulation.

It should be of the maximum available thickness. Here we share the most common mistakes people make when installing flat roofing insulation. The chosen insulation laid on top of this should be able to take the weight of anything put above it on the roof without compression or protected from compression by further sheeting. Roofing insulation is one of the most important and misunderstood building components.

The one you finally choose depends on several factors such as the arrangement of the layers of particular materials the way the roof slope is used and the type of roof. Consider geography budget and use for the roof to determine the best option. Once the roof demo was complete and the flat roof was cleared of any remaining debris some rotted 2x material around the perimeter of the roof was replaced. An atlanta architect is looking for the best way to insulate the flat roofs he often includes in his designs for contemporary houses.

If insulation is installed below the flat roof deck this is called a cold roof. With a flat roof however this becomes a major concern. Flat roof insulation installation the rigid foam board insulation we used was 2 thick and came in 4 x 8 sheets. Provides good dimensional stability excellent insulation value with stable r value and fire resistance.

A note to consider before construction. There are many different types and installation methods out there along with a lot misinformation about which products offer the greatest energy savings. Flat expanded polystryene eps roof insulation is suitable for use with all roofing membrane materials flat eps roof insulation is compatible with loose laid and attached single ply membranes conventional built up roofing or modified bitumen systems. Rockwool products are available with a bitumen or mineral coated fiberglass face to be used in a number of roofing solutions.

From there the flat roof system you choose will determine the materials you apply. Different types of roofing insulation exist including blanket insulation blown insulation and rigid insulation. Is a flat roof the problem. Rockwool stone wool roof insulation combines the thermal performance dimensional stability impact resistance and acoustic control required to increase the performance of many flat roof assemblies.

Flat roof insulation thickness. Flat expanded polystryene eps roof insulation provides high long term r value of eps and labor saving face laminates. The typical u value of an existing uninsulated flat roof is 1 5w m2k. The type that is right for your flat roof insulation job depends upon the state of the roof expert opinion on the best type and your budget.

Although this photo doesn t depict the house in question it illustrates some of the challenges faced by flat roofed buildings.