Inverted Roof Vs Warm Roof

You create a warm roof or a cold roof simply by applying the layers of the roof in a different order.

Inverted roof vs warm roof. It is a warm roof but with the insulation above the waterproof membrane and structural deck. The thermal efficiency isn t as good as with warm roof. Warm cold and inverted. When we talk about a warm roof vs a cold roof what we re really talking about is the insulation of the flat roof.

The waterproof covering is placed above the insulation and a vapour control layer is placed below the insulation. 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. Inverted roof designing buildings wiki share your construction industry knowledge. Rigid extruded polystyrene insulation has minimal water absorption due to its closed cell structure.

So what kind of difference does this make. 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. 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 are three recognised designs of flat roof construction.

Warm roof insulation ensures the entire roof structure is insulated meaning a warm deck roof is more energy efficient than a cold roof. It does not require a vapour retarder. Basically there are two options to choose from when insulating a flat roof. Installing a warm roof can be extremely straight forward and simple to do.

The breakdown warm roof vs cold roof. An inverted roof is quite simply where the waterproofing layer is installed over the structural deck rather than over the insulation. Benefits of inverted roofs. Warm roofs a warm roof includes insulation above the structural deck.

In a cold roof the insulation is applied between the rafters but in a warm roof the insulation is applied on top of the existing roof surface. This is also known as an upside down or protected membrane roof. A cold flat roof insulation requires more work taking off old boards and replacing them and the roof surface.