Underfloor Ventilation Nhbc

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.

Underfloor ventilation nhbc.

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. Vapour permeable underlays vpus and roof void ventilation withdrawn december 2016. Nhbc nhbc house davy avenue knowlhill milton keynes bucks mk5 8fp tel.

Where underfloor voids adjoin ground bearing floors ventilation ducts should be installed. 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. Sleeper walls and partitions should be constructed with sufficient openings to ensure adequate through ventilation. Air bricks to underfloor voids relationship to ground levels.

To help you interpret and apply the nhbc standards we produce the following technical guidance documents. If necessary pipe ducts should be incorporated in adjoining solid floors separating walls or other obstructions. 0344 633 1000 fax.