Inverted Roof Insulation

The inverted roof concept also known as protected membrane or upside down roofing ensures insulating both the water proofing membrane and the reinforced concrete slab from extreme thermal stress.

Inverted roof insulation.

A vertically grooved surface provides added protection against water by enhancing drainage away from the wall assembly. Benefits of inverted roofs. This makes it the only material suitable and approved for inverted roof applications. Rockwool multifix is a mineral fiberglass faced stone wool product that can be installed under many single ply membranes.

Dupont tyvek drainwrap is a moisture barrier designed to provide enhanced drainage in areas subject to extreme wind driven rain. Also known as a protected membrane or upside down roof inverted roofs employ insulation which can resist water absorption provide excellent thermal performance be unaffected by freeze and thaw cycles withstand surface traffic and be protected from uv and mechanical damage among others. Inverted roofs have their waterproofing layer beneath the insulation instead of above it as in other forms of roofing. 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.

Single ply roof systems can provide an easy to install seamless roof assembly. Foamglas invatherm is a non combustible thermal insulation product designed to protect the waterproofing on inverted roofs. 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 longevity of the entire roof system. Used as part of established inverted roof systems it offers a euroclass a1 rating and a high compressive strength.

Insulation boards are loose laid on top of the membrane and then weighted down with paving slabs or gravel ballast. An inverted roof is quite simply where the waterproofing layer is installed over the structural deck rather than over the insulation. Inverted roofs are designed with the waterproofing layer usually a liquid applied membrane beneath the insulation. One of the main benefits of the inverted roof method is that the membrane is protected by the insulation from the expansion and contraction caused by weather fluctuations such as frost and solar radiation.

Rigid extruded polystyrene insulation has minimal water absorption due to its closed cell structure. Single ply roof insulation.