Mono Pitched Roof Ventilation

Eaves soffits and fascias.

Mono pitched roof ventilation. Mono pitched roofs are also known by the names of skillion roofs shed roofs pent roof and lean to roof. Additional continuous 5mm ventilation at high level for roofs where pitch exceeds 35 or for roofs of any pitch with a span of more than 10m for lean to or mono pitch roofs. Achieving calculated continuous and unimpeded airflow through the roof cavity is relatively straight forward. To provide ventilation opening points can usually be provided on the following areas of a pitched roof.

For mono pitched roofs cross ventilation should be in accordance with bs 5250 and have ventilation equivalent of a continuous high level 5mm slot in addition to eaves ventilation. To reduce moist air entering the roof space. Has an adhesive and flexible aluminium flashing which is designed to form to roofing profiles and prevent water ingress on any pitch roof. They differ considerably from the conventional gabled roofs in shape and construction.

3944123 divisions of the building product design group. While the gabled roof is always pitched in two directions the mono pitch always slants in a single direction. G2500n vent over fascia vent which allows calculated airflow into the roof cavity vb20 vent vented batten performs two functions. Slating and tiling for pitched roofs and vertical cladding code of practice recommends that roof ventilation be provided in accordance with bs 5250.

Through the design and installation of specific product combinations an unimpeded passive ventilation system is created for a skillion mono pitch roof any degree pitch the following product combinations are recommended. There are three main types of flat roof construction namely cold deck warm deck and inverted warm deck the only one of which requires ventilation being the cold deck see figures 6 and 7. The ab20 form part of a passive ventilation system that works year round with no. A placed on top of the purlins.

These ventilation requirements vary based on the circumstances of the building and the interpretation of these requirements by bs 5250. The vent apron vent is a polypropylene vent which enables warm air to escape from the lower roof void or through the barge detail of a mono pitch skillion roof. Figure 5 mono pitch roof next to be discussed will be flat roof construction.