Warm Or Cold Roof

A warm roof is much more straightforward to install and provides a superior thermal performance and is therefore more costly.

Warm or cold roof.

What s more cost effective. Cold deck roof a cold deck roof is where the insulation is placed between the joists rafters or in between the ceiling joists in the case of a pitch roof. A warm roof building will make the entire structure of the building warm in an attempt to avoid any cold bridging. If you have been considering a new roof installation looking into adding insulation to your home or are planning to build a new house you may have heard people talk about hot roof and cold roof systems.

Warm roofs and cold roofs can take different forms depending on the nature of the roof form. However you may not be familiar with these concepts particularly what they mean and the pros and cons of each. The object being to design out the possibility of warm moisture laden air coming into contact with a cold surface and condensing. On flat roofs the insulation layer of a warm roof is usually on the outer surface of the roof structure.

In case of warm roofs they have an insulation above the roof deck in this way it keeps the deck warm. Ventilation is required for these roofs. Introduction warm cold roofs this guidance offers guidance on the difference benefits between warm and cold roofs. Warm roof construction requires that the entire roof construction is encapsulated within the insulation envelope of the building to be kept warm.

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 hot unvented roof requires that you pay meticulous attention to air sealing the attic. The breakdown warm roof vs cold roof. What is a warm roof or a cold roof.

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. Hot roofs or cold roofs. Namely the insulation layers. The membrane is then attached to the insulation.

A warm roof construction has many benefits over a traditional cold roof essentially it is a breathable roof. It has s insulation layer above the rafters and immediately below its weatherproof membrane. Depending on the quality of the insulation hot air from outside can permeate the insulation and warm the conditioned space raising energy bills and making hvac units work overtime. The structural deck and the supporting structure are at a temperature close to the interior of the building.

Warm roof insulation ensures the entire roof structure is insulated meaning a warm deck roof is more energy efficient than a cold roof.