Warm Deck Flat Roof Eaves Detail

The insulation is immediately below the waterproofing layer.

Warm deck flat roof eaves detail.

The wallplate is secured to the internal wall separated by dpc. This enables the temperature of the structure and the deck to be kept close to the temperature of the inside of the building hence warm. The insulation is placed below the waterproof covering and is either mechanically fixed or bitumen bonded on to the top of the deck. 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 eaves detail shows where the roof members and coverings meet the wall of the dwelling. The insulation is tapered to provide a fall to the roof to enable water to run to the water outlets. 25mm at eaves on each slope and 5mm at ridge. The wallplate is then used to secure the rafter to.

This is placed over the roof joists and a. Inverted warm deck roof the insulation boards in an inverted warm deck are laid over the structural deck and the waterproof covering. In a warm roof the thermal insulation is immediately below the membrane finish the structural deck any voids and the ceiling are at a temperature close to that of the building s interior condensation control is achieved by using a vapour control layer vcl on the warm side of the insulation. Warm roof systems benefit from the insulation sitting above the deck.

Warm roof ventilation specification for a simple duo pitch roof bs 5250 specifies sufficient ventilation as being. The vapour control layer is above the decking but below the insulation. If ridge or eaves ventilation is not possible ventilation tiles can be used at high or low level to achieve the required airflow. The sandwich warm deck roof is the most common type of flat roof.

This type of construction has the insulation above the roof deck thus keeping the deck warm.