Inverted Roof Vs Warm Roof

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 vs warm roof.

If work has progressed too far there is likely to be a greater willingness. 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. Benefits of inverted roofs.

Warm roofs a warm roof includes insulation above the structural deck. Installing a warm roof can be extremely straight forward and simple to do. As we ve seen though hybrid roofs are as likely if not more likely to occur because of on site issues without the input of designers. When we talk about a warm roof vs a cold roof what we re really talking about is the insulation of the flat roof.

Protected membrane roof pmr in a protected membrane roof also known as an inverted roof membrane assembly irma the insulation is installed on top of the membrane. Simply defined as a type of roof construction where the waterproofing layer lies beneath the insulation instead of above it as in other forms of roofing inverted roofs ensure that the complete roof construction including roof covering is kept at warm temperatures during winter months and at moderate temperates during the summer months. The thermal efficiency isn t as good as with warm roof. Nowhere does it support the design and construction of hybrid roofs.

Basically there are two options to choose from when insulating a flat roof. An inverted roof is a form of warm roof in which the waterproofing layer is beneath the thermal insulation rather than above it. Cold roof warm roof inverted roof. The waterproof covering is placed above the insulation and a vapour control layer is placed below the insulation.

A cold flat roof insulation requires more work taking off old boards and replacing them and the roof surface. 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. So what kind of difference does this make. The insulation may be exposed to water so it should have minimal water absorption characteristics.

The breakdown warm roof vs cold roof. Extruded polystyrene xps is the most suitable type. Warm roof insulation ensures the entire roof structure is insulated meaning a warm deck roof is more energy efficient than a cold roof. 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.