It is recommended where possible to use the warm deck method of insulation where the principal layer of roof insulation is positioned above the structural deck.
Warm deck roof boards.
This video will demonstrate how to install a cure it grp waterproofing system in a warm roof build up.
To insulate a flat roof with a concrete deck we recommend a warm deck construction method where the vapour control layer is sandwiched between the concrete deck and a layer of rigid pir insulation boards.
The insulation can be adhered mechanically fixed or loose laid.
The concrete deck can offer greater speed of roof construction which is an important consideration on many larger commercial projects.
Insulating a timber deck flat roof can be done using warm deck construction method or cold roof construction method.
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.
The vapour control layer is above the decking but below the insulation.
Is a three in one product to provide deck vapour.
Celotex td4000 is purpose designed for use in light traffic flat roof applications.