Which Is Best Warm Or Cold Roof

The breakdown warm roof vs cold roof a cold flat roof insulation requires more work taking off old boards and replacing them and the roof surface.

Which is best warm or cold roof.

This is because the insulation is laid over the top of the roof deck on top of a vapour control layer and underneath the roof covering. There are pros and cons to both a warm roof and a cold roof. A warm roof is much easier to install offers great thermal performance and can also add height to the flat roof. The membrane is then attached to the insulation.

A cold roof is best when you re initially creating a flat roof and is cheaper than a warm roof but does provide an inferior thermal performance. A warm roof is much more straightforward to install and provides a superior thermal performance and is therefore more costly. In climates that remain cold for a sustained period unvented roofs can cause more harm than good. The recognised flat roof build ups for best design practices are.

The reason for this is because an unvented roof allows more opportunity for conditioned air from the home to permeate the insulation warming the roof deck and causing ice dams during the winter. It is usually the most acceptable type of construction for domestic possessions and belongings as it avoids the need for aeration of the roof construction. This process offers a greater level of thermal insulation for your whole property. Warm roof construction requires that the entire roof construction is encapsulated within the insulation envelope of the building to be kept warm.

A warm roof construction has many benefits over a traditional cold roof essentially it is a breathable roof construction which allows moisture to escape which in turn prevents damp and any associated decay problems. Warm roofs in case of warm roofs they have an insulation above the roof deck in this way it keeps the deck warm. The object being to design out the possibility of warm moisture laden air coming into contact with a cold surface and condensing. A warm roof construction allows heat to be conserved within a property without the need for a ventilation system.

However it must be pointed out that a cold roof requires more work and isn t as thermally efficient as a warm one. Warm roof insulation ensures the entire roof structure is insulated meaning a warm deck roof is more energy efficient than a cold roof.