Thickness Of Flat Roof 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.

Thickness of flat roof insulation.

Achieving a u value of 0 20w m meaning your roof will be better insulated than your walls will need 120mm thickness of rigid foam or 200mm of mineral wool or natural insulation. There are many different types and installation methods out there along with a lot misinformation about which products offer the greatest energy savings. Fm approved subject to the conditions of approval as a roof insulation when installed as shown in the current edition of the factory mutual research approvals guide. Foamular xps roof insulation for commercial buildings page 5 foamular xps roof insulation for commercial buildings foamular xps insulation is a rigid foam insulation which meets the needs of today s design professionals for a truly sustainable insulation product.

See the department of energy s doe ranges for recommended levels of insulation below. Excellent lttr value compared to any other fm class 1 rated products of equivalent thickness. Insulating a flat roof is a task that must be done during construction. Benefits of energyguard polyiso roof insulation include.

A warm roof has the insulation above the structural deck which is thus kept warm. There are two basic categories of roof design. Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces. Rockwool products are available with a bitumen or mineral coated fiberglass face to be used in a number of roofing solutions.

Roofing insulation is one of the most important and misunderstood building components. 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. With a flat roof this issue does not arise but the u value constraint and the amount of insulation needed is just the same. The waterproof layer is above the insulation and a vapour control layer is placed below the insulation.

The typical u value of an existing uninsulated flat roof is 1 5w m2k. 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. It should be of the maximum available thickness. Flat roof insulation thickness.

Here we share the most common mistakes people make when installing flat roofing insulation. Standing seam roof insulation.