| Ventilation |
Pitched roof spaces should have ventilation openings at
A Pitched roof space which has a single slope and abuts a wall should have ventilation openings at eaves level and at high level. The ventilation at high level may be arranged at the junction of the roof and the wall or thought the roof covering. If it is through the roof covering it should be placed as high as practical.
Roof spaces should have ventilation openings in two
A pitched roof space which has a single slope and abuts awall should have ventilation openings at eaves level and at high level. The ventilation at high level may be arranged at the junction of the roof and the wall or through the roof covering. If it is through the roof covering it should be placed as high as practicable.
Roof spacers should have ventilation openings in two
Roof spaces should have ventilation openings in two opposite side to promote cross ventilation. These openings should have an area at least equal to continuous ventilation running the full length of the eaves and 25mm wide.
UNDER FLOOR VENTILATION 1985 BUILDING REGULATIONS C1
In accordance with current practice the recommendations of both the NHBC and British Board of Agreement suggest ventilation of under floor voids by providing the equivalent of a continuous gap along the perimeter of exterior walls. Call us free now on 0800 581 247 |