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.
Warm or cold roof.
The breakdown warm roof vs cold roof.
Warm roofs and cold roofs can take different forms depending on the nature of the roof form.
A hot unvented roof requires that you pay meticulous attention to air sealing the attic.
A warm roof building will make the entire structure of the building warm in an attempt to avoid any cold bridging.
What is a warm roof or a cold roof.
In case of warm roofs they have an insulation above the roof deck in this way it keeps the deck warm.
On flat roofs the insulation layer of a warm roof is usually on the outer surface of the roof structure.
A cold flat roof insulation requires more work taking off old boards and replacing them and the roof surface.
Introduction warm cold roofs this guidance offers guidance on the difference benefits between warm and cold roofs.
You create a warm roof or a cold roof simply by applying the layers of the roof in a different order.
Namely the insulation layers.
The structural deck and the supporting structure are at a temperature close to the interior of the building.
A warm roof is much more straightforward to install and provides a superior thermal performance and is therefore more costly.
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.
However you may not be familiar with these concepts particularly what they mean and the pros and cons of each.
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.
The object being to design out the possibility of warm moisture laden air coming into contact with a cold surface and condensing.
Warm roof construction requires that the entire roof construction is encapsulated within the insulation envelope of the building to be kept warm.
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.
What s more cost effective.
Ventilation is required for these roofs.
Warm roof insulation ensures the entire roof structure is insulated meaning a warm deck roof is more energy efficient than a cold 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.
A warm roof construction has many benefits over a traditional cold roof essentially it is a breathable roof.
