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.

Thickness of flat roof insulation. 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. 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. Standing seam roof insulation. The typical u value of an existing uninsulated flat roof is 1 5w m2k.

See the department of energy s doe ranges for recommended levels of insulation below. A warm roof has the insulation above the structural deck which is thus kept warm. Here we share the most common mistakes people make when installing flat roofing insulation. A cold roof has the insulation placed below the structural deck which thus remains cold.

Owens corning insulation products help improve thermal performance and control moisture in commercial institutional and. 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. 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.

There are many different types and installation methods out there along with a lot misinformation about which products offer the greatest energy savings. Flat roof insulation thickness. It should be of the maximum available thickness. 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.

Roofing insulation is one of the most important and misunderstood building components. Benefits of energyguard polyiso roof insulation include. 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. 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.

Retrofitting flat roof insulation is a difficult task and often a messy one that involves pulling up the waterproof layer that finishes off the deck so as to put flat roof insulation in underneath. The waterproof layer is above the insulation and a vapour control layer is placed below the insulation.