Warm roof construction requires that the entire roof construction is encapsulated within the insulation envelope of the building to be kept warm.
Warm roof cold roof hybrid.
A cold flat roof insulation requires more work taking off old boards and replacing them and the roof surface.
Basically the term cold roof refers to a traditional roof or vented roof while hot roof refers to a roof that is not ventilated and which has foam insulation attached directly to the roof sheathing.
This solid tiled and insulated roof is designed to keep you warm in winter and cool in summer for all year round comfort.
When issues like those above occur it s not surprising that people look at the space between the joists and wonder if they can use it for more insulation.
Warm roof insulation ensures the entire roof structure is insulated meaning a warm deck roof is more energy efficient than a cold roof.
Warm cold and inverted.
Unfortunately you appear to be describing a hybrid roof which is a form of construction that increases the risk of condensation.
We would recommend either a fully warm roof with insulation on top of the roof deck or a cold roof with a minimum 50mm well ventilated cavity between the roof deck and the top of the insulation.
In a warm roof construction the principal thermal insulation layer is located above the structural decking resulting in the structural deck and support structure being at a temperature close to that of the interior of the building.
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 recognised designs of flat roof construction.
But as daniel bosworth design technical manager at sig design technology explains they should be approached with caution.
If the basic warm roof construction is followed before extra insulation is installed problems can arise.
The breakdown warm roof vs cold roof.
Xtratherm manufactures an extensive range of high performance pir flat roof insulation boards that include tapered insulation providing comprehensive technically advanced solutions for all.
The warmroof hybrid is our luxurious solid tiled conservatory roof built with slimline glass panels to let the light into your room.