Pitched Roof Eaves Ventilation

Where the roof pitch is 15 or more ventilation equivalent to a 10mm slot running the full length of the eaves should be provided.

Pitched roof eaves ventilation.

Eaves courses of tiles should be at same pitch as general tiling. 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. To comply with approved document c and bs 5250 crossflow ventilation should be provided at both the eaves and or ridge level.

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. Because the roof isn t in play here it doesn t matter how many hips valleys dormers or gables there are. We stock a wide range of pitched roof vents and roof ventilation products from leading brands such as ubbink marley eternit redland. In mixed climates ventilation serves either role depending on the season.

Manthorpe g1275 eaves comb filler. It is most effective when used in conjunction with high level roof ventilation provided by corovent slate tile and ridge vents. To provide ventilation opening points can usually be provided on the following areas of a pitched roof. 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.

Eaves ventilation is a simple and effective way of providing the necessary air movement within a cold roof. The ventilation at high level may be arranged at the junction of the roof and the wall or through the roof covering. A key benefit of venting the attic is that the approach is the same regardless of how creative your architect got with the roof. Timloc 3 in 1 eaves ventilation pack 10mm airflow 300mm rafter tray 13 86 ex vat 16 63 inc vat.

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. Set top of fascia board at correct level and fit ventilator in accordance with manufacturers recommendations. Eaves with over fascia ventilation. Sufficient cold roof ventilation.

If a sprocketted or bell cast detail is used then eaves courses should beno lower than the minimum recommended roof pitch. If it is through the roof covering it should be placed as high as practicable.