Inverted Roof Insulation

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.

Inverted roof 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. An inverted roof is quite simply where the waterproofing layer is installed over the structural deck rather than over the insulation. Inverted roof designing buildings wiki share your construction industry knowledge. 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.

Jablite supplies insulation boards in a range of grades suitable for all flat roof applications. Invented by dow in the late 1960 s an inverted roof system uses dupont styrofoam brand xps insulation to protect the membrane helping improve the performance and. An inverted roof also referred to as a protected membrane or upside down roof is form of flat roof in which the waterproofing layer is beneath the thermal insulation rather than above it. 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. 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. Inverted roofs have their waterproofing layer beneath the insulation instead of above it as in other forms of roofing.

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. An inverted roof is a form of flat roof where the waterproof layer is beneath the insulation rather than above it. 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. 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.