Underfloor Ventilation Nhbc

Vapour permeable underlays vpus and roof void ventilation withdrawn december 2016.

Underfloor ventilation nhbc.

If necessary pipe ducts should be incorporated in adjoining solid floors separating walls or other obstructions. 01908 747 255 www nhbc co uk question in relation to external ground levels where should air bricks which provide natural ventilation to under oor voids be positioned. Where underfloor voids adjoin ground bearing floors ventilation ducts should be installed. To help you interpret and apply the nhbc standards we produce the following technical guidance documents.

Air bricks to underfloor voids relationship to ground levels. They have been designed to meet the requirements of the relevant building regulations scottish building standards and british standards as well as satisfying the. Ventilation of underfloor voids. 0344 633 1000 fax.

Nhbc inspection staff have noted and are concerned that the well established best practice of the finished ground level being 150mm below the dpc is being ignored on an increasing number of sites. Sleeper walls and partitions should be constructed with sufficient openings to ensure adequate through ventilation. Now covered by vpu high level ventilation in standards fixing tiling battens using.