Sub Floor Ventilation Spacing

Ground moisture rising into or entering the subfloor space can create a damp environment which encourages timber rot fungus growth and the potential for termite activity.

Sub floor ventilation spacing.

Terracotta 230mm x 150mm 6 200vent in situ. Have a look at the just for fun exercise for more details on these requirements. 3600 specifies that the minimum requirement for sub floor ventilation should be one 1 ventilator of 8 400 mm. Aleta 230mm x.

Openings should be provided within 750 mm of. The space under a suspended timber framed floor must be ventilated. Many traditional properties are built with a suspended wooden floor which sits above a void air space between the perimeter walls and ground if this space is not ventilated the air in it becomes stagnant and humid and the moisture within it begins to condense on the brickwork and flooring. Subfloor ventilation is cross ventilation of the subfloor space between the underside of the subfloor and the ground surface under a building.

It also enables a person to climb in and inspect the area for termites fungal decay and other building problems. If the ground or subfloor space is damp the first thing to do is identify the source of the moisture. Inspect the subfloor space to ensure that the water is not coming from leaking pipes wastes or drains. If the ground under the subfloor space is dry and there is no evidence of moisture there is no need to increase the amount of ventilation.

The open space allows the air to move freely inside the subfloor cavity. A clear opening area of 3500 mm 2 100 x 35 mm should be provided for every square metre of floor area. Vent type l vent size l area per square mm.