Inverted Roof Insulation System

The mariseal system inverted flat roof waterproofing method offers a simple build up waterproofing that features a protected waterproofing membrane and loose laying insulation boards.

Inverted roof insulation system.

Good insulation qualities and low thermal conductivity are required to ensure the low u value of the roof. It is also protected from damage by traffic on the roof such as people walking the movement of equipment and so on. The membrane is further protected by ballast overtop the insulation. 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.

Rigid extruded polystyrene insulation has minimal water absorption due to its closed cell structure. It is therefore essential the insulation layer is rot proof and durable. Quantum is an innovative insulation system that can revolutionise a construction build. Insulation boards are loose laid on top of the membrane and then weighted down with paving slabs or gravel ballast.

Whilst the inverted roof is a robust system the insulation layer does not benefit from the protection of the waterproofing membrane. Inverted roof membrane assembly irma can be constructed. 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. Used as part of established inverted roof systems it offers a euroclass a1 rating and a high compressive strength.

Inverted roof systems are also referred to as upside down roof assembly. Inverted roofs are designed with the waterproofing layer usually a liquid applied membrane beneath the insulation. In an irma the system s insulation is installed above the waterproofing membrane instead of below as in a conventional roof assembly. Foamglas invatherm is a non combustible thermal insulation product designed to protect the waterproofing on inverted roofs.

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. Inverted flat roof waterproofing combined with a thermal insulation is essential for a buildings waterproofing and energy saving thermal insulation. This makes it the only material suitable and approved for inverted roof applications.