Instead the attic has insulation on the floor that separates air between the conditioned and attic spaces.
Warm roof cold roof insulation.
The object being to design out the possibility of warm moisture laden air coming into contact with a cold surface and condensing.
There are three types of insulation solution if you have a flat roof.
For this type of roof you ll need to have proper soffit vents a ridge or gable vent and ventilation baffles.
If an existing cold roof is to be refurbished consideration should be given to converting the design to a warm roof or incorporating new insulation into the roofing system to improve thermal performance.
The term cold roof refers to traditional roofs in which insulation is placed in the ceiling of the home so it is underneath the attic space which is not conditioned.
Warm roof construction requires that the entire roof construction is encapsulated within the insulation envelope of the building to be kept warm.
A properly insulated ventilated roof can help to control or prevent the formation of ice dams.
Warm deck or warm roof refers to a situation where the deck of the roof which is usually made of wood is below the.
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.
There are two basic categories of roof design.
A cold roof implies that the attic is not within the conditioned space of the home.
A warm roof has the insulation above the structural deck which is thus kept warm.
These roofs include a.
A warm roof construction allows heat to be conserved within a property without the need for a ventilation system.
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.
Ventilated roofs remove moisture from roof cavities structural members sheathing and insulation.
Warm roof insulation ensures the entire roof structure is insulated meaning a warm deck roof is more energy efficient than a cold roof.
Cold bridging occurs when there is a continuous path created through the insulation.
A cold roof has the insulation placed below the structural deck which thus remains cold.
The breakdown warm roof vs cold roof.
Because the warm roof method makes sure all of the roof structure is insulated it s a more energy efficient option over a cold roof.