For effective sub-floor ventilation:

• 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.

• Ventilate the underfloor space by providing ventilation in two opposing external walls.  Ensure ventilation has a free and unobstructed path to all areas by making provision for ventilation air to pass through sleeper walls and other sub-floor obstructions.

• Position ventilation clear of where hard landscaping and vegetation is likely to finish.

• If flooding is a risk consider using Rytons Vertical Extension to raise the height of the Periscope above ground level to prevent low-level flood water from entering the property via the sub-floor air bricks.

• Buy or specify Rytons by name.  Alternative products may have lower rates of ventilation which could leave the sub-floor under ventilated.  Find NBS Plus specifications for Rytons Periscope Underfloor Ventilator (PUFV), Rytons Multifix Air Brick (MFAB) and Rytons Periscope Vertical Extension (PUFVVEXT) below.

Make a calculation for the use of Rytons Periscope Underfloor Ventilator with Multifix Air Brick: