Pitched Roof Eaves Ventilation

If it is through the roof covering it should be placed as high as practicable.

Pitched roof eaves ventilation.

The ventilation at high level may be arranged at the junction of the roof and the wall or through the roof covering. To comply with approved document c and bs 5250 crossflow ventilation should be provided at both the eaves and or ridge level. Manthorpe g1275 eaves comb filler. Eaves soffits and fascias.

Slating and tiling for pitched roofs and vertical cladding code of practice recommends that roof ventilation be provided in accordance with bs 5250. A key benefit of venting the attic is that the approach is the same regardless of how creative your architect got with the roof. It is most effective when used in conjunction with high level roof ventilation provided by corovent slate tile and ridge vents. Set top of fascia board at correct level and fit ventilator in accordance with manufacturers recommendations.

A pitched roof which has a single slope and abuts a wall should have ventilation openings at eaves level and at high level. This should ensure that effective through ventilation of the whole roof is achieved and assist in pulling moisture laden air out of the building and limiting condensation. 0 00 0 bag checkout. In mixed climates ventilation serves either role depending on the season.

Eaves with over fascia ventilation. Timloc 3 in 1 eaves ventilation pack 10mm airflow 300mm rafter tray 13 86 ex vat 16 63 inc vat. Where the roof pitch is 15 or more ventilation equivalent to a 10mm slot running the full length of the eaves should be provided. Sufficient cold roof ventilation.

Where the ceiling follows the slope of a roof regardless of pitch or where a cold roof has a pitch less than 15 ventilation equivalent to a 25mm slot running the full length of the eaves should be provided a nominal clearance of 50mm should be maintained. Eaves ventilation is a simple and effective way of providing the necessary air movement within a cold roof. Eaves courses of tiles should be at same pitch as general tiling. To provide ventilation opening points can usually be provided on the following areas of a pitched roof.

Because the roof isn t in play here it doesn t matter how many hips valleys dormers or gables there are. Duo pitch roofs greater than 20 0 pitch or greater than 10m span should have additional ventilation at the ridge to assist airflow through the roof void equivalent to at least a 3 mm wide continuous gap.