Warm Deck Roof Insulation

A warm roof has the insulation above the structural deck which is thus kept warm.

Warm deck roof insulation.

Cold flat roofs are typically avoided as you d need to install ventilation which can prove problematic for many reasons relating to space labour costs etc. We also have insulation boards suitable for more specialist roof applications for example inverted roof insulation and balcony insulation. The insulation can be adhered mechanically fixed or loose laid. A warm deck roof is where the insulation is placed on top of the rafters joists and the roof covering is then placed over the insulation.

Fortunately these days there is a better form of insulation available for your flat roof. In the case of a flat roof insulation is usually either a rigid board above the deck or a mineral glass wool quilt immediately above the underdrawn ceiling depending on the type of roof design and construction. There are two basic categories of roof design. It also provides better thermal performance and makes it easier to eliminate thermal bridging.

The layer of insulation is essentially placed outside of the roof. The warm deck roof design is the modern method for flat roof construction and is preferred wherever this option is possible. The best method of insulating a flat roof is by using a warm deck flat roof construction method. The insulation is immediately below the waterproofing layer.

A flat roof where the insulation sits below the waterproof membrane and above the structural deck is a warm roof deck. Warm flat roofs do not need to be ventilated as the insulation is. The main advantage of a warm deck construction versus a cold deck construction is that there is no need to include a ventilated cavity in the warm deck construction. No ventilation is required for these types of roofs.

This video will demonstrate how to install a cure it grp waterproofing system in a warm roof build up. This system is called warm deck insulation and eradicates the condensation and venting issues associated with the cold deck system. The waterproof layer is above the insulation and a vapour control layer is placed below the insulation. So called because the insulating layer is located above the roof rafters and between the structural supports a warm deck roof results in a temperature for the roof and loft area that is consistent with the rest of the.

The vapour control layer is above the decking but below the insulation. The solution warm deck insulation.