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Inverted Roof

An inverted roof system is a type of flat roof construction in which the insulation is placed on top of the waterproofing layer. This is the opposite of a conventional flat roof system, where the waterproofing layer is placed over the insulation. In an inverted roof system, the insulating layer helps protect the waterproofing layer from damage caused by weather and UV rays, while providing thermal insulation and reducing heat loss. The insulating layer can be made of various materials, including rigid foam boards or mineral wool, and is usually covered with a layer of gravel or pavers to protect it from damage and provide a stable surface for maintenance workers . The waterproofing layer is generally made of bituminous membranes or synthetic materials such as PVC or TPO.

An inverted roof is actually a variation of a warm roof where the placement of the thermal insulation is different.

An inverted roof system is a popular choice for buildings with flat or low-slope roofs because it can provide a durable roofing solution that is resistant to leaks, thermal bridging and other types of damage. However, it is important to ensure proper installation and maintenance of an inverted roof system to prevent moisture infiltration and other types of damage that can occur over time.