The insulation in a warm deck roof is installed immediately below the roof membrane on top of the roof deck usually with a vapour control layer underneath the insulation.
Cold deck roof advantages.
The simplicity of a warm flat roof makes it one of the most popular designs providing an effective and easy way of.
Traditionally flat roofs simply consisted of a structural timber deck with a waterproof covering directly applied to the top of the deck.
A warm deck roof is much easier to install offers great thermal performance but adds height to the flat roof.
This means that a tpo roof is as uv resistant and as heat resistant as epdm and as heat weldable.
Less thermally efficient than a warm roof construction cold roof construction remains the most common form of construction for existing flat roofs.
Which makes sense as this space is otherwise empty and so it s a simple low impact way to insulate a roof.
A cold roof design usually leaves a 50mm gap between the top of the insulation and the roof deck above.
Well a cold roof is created by laying insulation between the rafters.
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It is ideal for other structures such as decks garages patios sheds.
The 18mm roof grade deck is then fixed on top of the rafters leaving suitable air flow between the insulation and the deck.
This design dates back many years and flat roof insulation was somewhat of an afterthought with this type of roof.
The insulation material is placed immediately above the ceiling between the rafters.
Contrasted with the cold deck roof this construction has a much lower risk of condensation as the void will be of a comparable temperature to the roof.
A cold flat roof insulation requires more work taking off old boards and replacing them and the roof surface.
Where a cold flat roof does incorporate insulation this is.
If you are looking to install a single ply roofing membrane that will be energy efficient and are evaluating your options consider tpo thermoplastic olefin roofing.
Polycarbonate is also very lightweight and capable of withstanding extreme temperatures either hot or cold.
This allows air to circulate.
Tpo is touted to have the benefits of two of its direct competitors epdm and pvc roofs but without the drawbacks and extra costs.
The thermal efficiency isn t as good as with warm roof insulation.
While polycarbonate roofing may not be the best option for an entire house.
Traditional cold deck flat roof.
Warm flat roofs make it easier to eliminate cold bridging allows heat to be conserved with no requirement for roof void ventilation allows moisture to escape which prevents.
