Warm Deck Flat Roof Eaves Detail

Inverted warm deck roof the insulation boards in an inverted warm deck are laid over the structural deck and the waterproof covering.

Warm deck flat roof eaves detail.

Warm roof ventilation specification for a simple duo pitch roof bs 5250 specifies sufficient ventilation as being. If ridge or eaves ventilation is not possible ventilation tiles can be used at high or low level to achieve the required airflow. This type of construction has the insulation above the roof deck thus keeping the deck warm. The cavity is closed with a proprietary cavity closer.

25mm at eaves on each slope and 5mm at ridge. 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. The eaves detail shows where the roof members and coverings meet the wall of the dwelling. Warm roof systems benefit from the insulation sitting above the deck.

The insulation is tapered to provide a fall to the roof to enable water to run to the water outlets. This is usually the most satisfactory construction for domestic properties as it avoids the need for ventilation of the roof. Warm deck flat roof the type of insulation for this is usually of a rigid type and the thickness will vary depending on the manufacturer s specifications. 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.

This is placed over the roof joists and a. The insulation is immediately below the waterproofing layer. The sandwich warm deck roof is the most common type of flat roof. The insulation is placed below the waterproof covering and is either mechanically fixed or bitumen bonded on to the top of the deck.

The wallplate is secured to the internal wall separated by dpc.