However this is a general guide and could change depending upon the building use location and humidity class.
Hybrid flat roof.
In this context the term hybrid flat roof refers to a timber flat roof construction that is insulated both between and over the joists.
If the basic warm roof construction is followed before extra insulation is installed problems can arise.
Traditionally flat roof constructions fall in to two camps.
In each case the name refers to the position of the insulation in relation to the roof deck.
A warm flat roof is.
The hybrid system is a multi layered high performance roofing solution using superior time proven materials.
Hybrid roofscombining elements of both cold and warm flat roof design hybrid roofs appear to offer the best of both worlds when it comes to maximising thermal performance while limiting constructional depth.
Imagine a flat roof constructed on timber deck and joists.
Warm flat roofs and cold flat roofs.
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.
This is then topped up with 120mm of glass wool installed.
Our final example of this block is a hybrid flat roof insulation solution is a highly cost effective solution where larger timbers 150mm have already been installed the solution starts off with our next gen sf19 superfoil insulation installed across the top of your joists with firings overs the top to provide the necessary drop.
It utilizes not one but two roofing systems to produce one of the strongest longest lasting roofing systems in the industry.