Beam And Block Floor Ventilation

A minimum ventilation void of 150mm should be provided below the underside of precast concrete and timber suspended floors.

Beam and block floor ventilation.

This gives a minimum open area per meter run of wall of 600mm. Beam and block flooring demonstrates good noise reduction and fire resisting properties and is also suitable to host underfloor heating systems. On shrinkable soil where heave could take place a larger void is required to allow for movement according to the volume change potential. Beam block ventilation detail beam block ventilation ventilation must be provided to the void beneath the floor by openings in all external walls at not more than 3m centres.

Air bricks should be kept clear of obstructions that could reduce or block the required air ow. In areas where there might be landfill gas or methane contamination the minimum area of opening is. Ventilate the underfloor space by providing ventilation in two opposing external walls. The installation of a beam and block floor is not usually weather dependent and therefore specifying this form of construction can reduce site delays that other methods might encounter.

Save time by using this handy calculator to work out how many rytons periscope vents with rytons multifix air bricks are required for suspended timber or block and beam floors. Adequate cross ventilation to meet nhbc standards and building regulations. This also applies to any internal sleeper walls. Air bricks set at or close to ground level may ood and allow rainwater to enter the under oor void.

For vents at ends of beams just position between the beam ends and avoid fiddly lintel detail.