Warm Pitched Roof Vs Cold Pitched Roof

The breakdown warm roof vs cold roof.

Warm pitched roof vs cold pitched roof.

In building construction roof pitch is a numerical measure of the steepness of a roof. What is a warm roof or a cold roof. Installing a warm roof can be extremely straight forward and simple to do. Cold pitched roofs can be ventilated or unventilated requiring the use of vapour impermeable and vapour permeable underlays.

There are typically two different ways to insulate a roof a warm roof and a cold roof. Warm cold roofs. You create a warm roof or a cold roof simply by applying the layers of the roof in a different order. An architect makes the usual decision of the pitch.

Constructing a cold roof on an existing roof can be challenging and time consuming. A pitched or slanted roof has a terrain of at least 15 but it is often much more. Basically there are two options to choose from when insulating a flat roof. A cold flat roof insulation requires more work taking off old boards and replacing them and the roof surface.

Warm roof insulation ensures the entire roof structure is insulated meaning a warm deck roof is more energy efficient than a cold roof. A warm roof building will make the entire structure of the building warm in an attempt to avoid any cold bridging. At rafter level warm pitched roof ceiling insulation cold roof in the cold pitched roof method of construction glass mineral wool insulation is placed at ceiling level between and over the ceiling joists. The definition of a warm roof on pitched roofs.

When we talk about a warm roof vs a cold roof what we re really talking about is the insulation of the flat roof. There are pros and cons to both a warm roof and a cold roof. What s more a warm roof allows heat to be conserved within a property without a ventilation system needing to be installed. Namely the insulation layers.

A typical roof pitch in the uk for a traditional house will be 40 50 but at most it can go up to 70. In a cold roof the insulation is applied between the rafters but in a warm roof the insulation is applied on top of the existing roof surface. The object being to design out the possibility of warm moisture laden air coming into contact with a cold surface and condensing. It requires you to rip the roofing material apart to lay the insulation on the surface above the ceiling.

The breakdown warm roof vs cold roof. However it must be pointed out that a cold roof requires more work and isn t as thermally efficient as a warm one.