Inverted Roof Vs Warm Roof

A cold flat roof insulation requires more work taking off old boards and replacing them and the roof surface.

Inverted roof vs warm roof.

The breakdown warm roof vs cold roof. The problem with this kind of flat roof. An inverted roof is quite simply where the waterproofing layer is installed over the structural deck rather than over the insulation. The thermal efficiency isn t as good as with warm roof.

Inverted roof designing buildings wiki share your construction industry knowledge. Benefits of inverted roofs. Warm cold and inverted. Warm roofs a warm roof includes insulation above the structural deck.

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. Basically there are two options to choose from when insulating a flat roof. Inverted roofs or upside down roofs have the insulation laid onto the waterproofing membrane. Installing a warm roof can be extremely straight forward and simple to do.

Namely the insulation layers. The great benefit of inverted roofs is that the insulation protects the membrane from extremes of weather such as frost uv exposure and the expansion and contraction that comes about from summer winter temperature cycles which can be as much as 80 c on some roofs. Inverted roofs because of the need for ballast paving or vegetation inverted roofs typically weigh about 90kg m2 which means the structural load is the. Warm roof insulation ensures the entire roof structure is insulated meaning a warm deck roof is more energy efficient than a cold roof.

There are three recognised designs of flat roof construction. While traditional roofs place the insulation under the protective membrane inverted roofs are designed with the waterproofing layer usually a liquid applied membrane beneath the insulation. In a warm roof construction the principal thermal insulation layer is located above the structural decking resulting in the structural deck and support structure being at a temperature close to that of the interior of the building. There is normally some ballast to hold the insulation down.

What is a warm roof or a cold roof. Rigid extruded polystyrene insulation has minimal water absorption due to its closed cell structure. The waterproof covering is placed above the insulation and a vapour control layer is placed below the insulation.