The plans state 100mm kingspan thermaroof with the joists 450 centres.
Warm deck flat roof construction.
The insulation is immediately below the waterproofing layer.
On a basic level flat roof construction comes in the form of roofing timbers or joists as they are more commonly known or steels that are laid across two uprights walls in most cases.
The vapour control layer is above the decking but below the insulation.
It s far easier if you googled flat roof construction or looked on pinterest for examples of what i m waffling about it s pretty self.
Construction studies drawing detail showing how to draw a flat roof warm deck construction detail to a scale of 1 10 with a short introduction highlighting t.
They can be built up from profiled metal decks as the insulation selected would provide enough rigidity to span the open sections of such decks.
18mm ply deck.
A warm flat roof or a built up roof bur is one where all the insulation is above the joists deck making them part of the warm fabric of the building.
So called because the insulating layer is located above the roof rafters and between the structural supports a warm deck roof results in a temperature for the roof and loft area that is consistent with the rest of the property.
Warm roof build ups can be installed on most modern construction material types such as concrete timber and timber based sheets.
In a warm flat roof construction the insulation is positioned above the structural deck and no ventilation is required.
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.
The warm deck roof design is the modern method for flat roof construction and is preferred wherever this option is possible.
Discussion in carpenters talk started by adam harrington mar 18.