Inverted Roof Insulation

Inverted roofs have their waterproofing layer beneath the insulation instead of above it as in other forms of roofing.

Inverted roof insulation.

Insulation boards are loose laid on top of the waterproof usually a liquid applied membrane and then weighted down with paving slabs or gravel ballast. Jablite supplies insulation boards in a range of grades suitable for all flat roof applications. An inverted roof is quite simply where the waterproofing layer is installed over the structural deck rather than over the insulation. The calculation is based on an inverted roof construction of 150mm reinforced concrete deck hot melt waterproofing jablite inverted roof insulation jablite filter membrane drainage factor ƒ.

Inverted roof designing buildings wiki share your construction industry knowledge. The table below shows thickness of jablite inverted roof insulation range required to achieve u values from 0 25 w m k down to 0 10 w m k. Our range of inverted roof insulation has high compressive strength and increased resistance to water absorption. Jablite supplies insulation boards in a range of grades suitable for all flat roof applications.

An inverted roof also known sometimes as a protected membrane or pmr roof uses the same materials as a conventional roof but places insulation on the top of the membrane. Jablite premium inverted roof insulation boards in 200 300 and 200 grades have adequate resistance to the loads associated with light maintenance traffic on roofs and to pedestrian foot traffic on balconies and roof terraces. Inverted roof insulation our range of high performance rigid extruded polystyrene insulation products are suitable for use in a range of inverted roofs including green roofs and protected membrane flat roofs. It is the insulation for protected membrane flat and green roofs.

In this issue the investigations team explains how inverted roofs work outlines their benefits warns of a possible cause of problems and describes an unusual investigation. Jablite premium tapered inverted roof 200 and 300 premium and 200 premium have adequate resistance to the loads associated with light maintenance traffic on roofs and to pedestrian foot traffic on balconies and roof terraces. Rigid extruded polystyrene insulation has minimal water absorption due to its closed cell structure. Inverted roofs have their waterproofing layer beneath the insulation instead of above it as in other forms of roofing.