Warm Deck Roof Boards

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.

Warm deck roof boards.

Insulating a timber deck flat roof can be done using warm deck construction method or cold roof construction method. 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. Celotex td4000 comprises a polyisocyanurate rigid foam insulation core with a thermal conductivity of 0 022 w mk and low emissivity aluminium foil facings on both sides bonded to a layer of 5 5mm wbp exterior grade plywood. The concrete deck can offer greater speed of roof construction which is an important consideration on many larger commercial projects.

The insulation can be adhered mechanically fixed or loose laid. Celotex td4000 is purpose designed for use in light traffic flat roof applications. The insulation is immediately below the waterproofing layer. 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.

The vapour control layer is above the decking but below the insulation.