Thickness Of Flat Roof Insulation

A warm roof has the insulation above the structural deck which is thus kept warm.

Thickness of flat roof insulation.

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. Saint gobain insulation uk manufacture and supply glass mineral wool slabs and rolls along with rigid polyisocyanurate pir boards that can be considered suitable for a wide range of applications across flat roofs whether you re looking to insulate at joist level or above the roof deck in your flat roof construction. The typical u value of an existing uninsulated flat roof is 1 5w m2k. There are two basic categories of roof design.

When installing a flat roof it is important to ensure you have suitable flat roof insulation to minimise any heat loss and improve noise insulation and is an essential part of the roof structure without appropriate flat roof insulation the extension or building will not pass building regulations. 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. Owens corning insulation products help improve thermal performance and control moisture in commercial institutional and. With a flat roof this issue does not arise but the u value constraint and the amount of insulation needed is just the same.

With solutions ranging from our optim r vacuum insulation panels to our therma range of pir insulation we can provide the best solution for flat roof insulation for roofs with mechanically fixed bonded or torch applied waterproofing systems. It should be of the maximum available thickness. Roofing insulation is one of the most important and misunderstood building components. Here we share the most common mistakes people make when installing flat roofing insulation.

See the department of energy s doe ranges for recommended levels of insulation below. Flat roof insulation thickness. 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. 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.

There are many different types and installation methods out there along with a lot misinformation about which products offer the greatest energy savings. 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. Our range of high and optimum performance flat roof insulation products are suitable for use in a range of flat roofs.