Warm Roof Cold Roof Insulation

Ventilation is required for these roofs.

Warm roof cold roof insulation.

Cold loft insulation for pitched roofs. However you may not be familiar with these concepts particularly what they mean and the pros and cons of each. If an existing cold roof is to be refurbished consideration should be given to converting the design to a warm roof or incorporating new insulation into the roofing system to improve thermal performance. It has s insulation layer above the rafters and immediately below its weatherproof membrane.

The simplest and cheapest roof insulation is the classic cold loft option. The insulation is immediately below the waterproofing layer. This construction relies on a vapour control layer working effectively and in tandem with a continuous ventilated airspace to disperse the water vapour to atmosphere before it reaches the cold deck and condenses. Installing a warm roof can be extremely straight forward and simple to do.

Warm deck cold deck or inverted roof. The insulation can be adhered mechanically fixed or loose laid. The vapour control layer is above the decking but below the insulation. A warm roof construction has many benefits over a traditional cold roof essentially it is a breathable roof.

Typically a gap will have to be left for ventilation because this is a cold area. A cold flat roof insulation requires more work taking off old boards and replacing them and the roof surface. The breakdown warm roof vs cold roof. A warm roof building will make the entire structure of the building warm in an attempt to avoid any cold bridging.

Warm roof insulation ensures the entire roof structure is insulated meaning a warm deck roof is more energy efficient than a cold roof. Cold deck roof a cold deck roof is where the insulation is placed between the joists rafters or in between the ceiling joists in the case of a pitch roof. 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. A cold roof has the insulation placed below the structural deck which thus remains cold.

Warm roofs offer a superior thermal performance and therefore come with a higher cost. Insulation is placed over and between the wooden joists above the ceiling of your home s top floor. The thermal efficiency isn t as good as with warm roof. Cold deck or cold roof is where the insulation is below the roof deck and the associated joists.

If you have been considering a new roof installation looking into adding insulation to your home or are planning to build a new house you may have heard people talk about hot roof and cold roof systems. With a warm roof the insulation is installed on top of the existing surface rather than in between the rafters. Cold bridging occurs when there is a continuous path created through the insulation.