Suspended Timber Floor Ventilation

Supports underneath the floor are permanent and include sleeper walls or timber props placed at regular intervals.

Suspended timber floor ventilation. Otherwise a structural engineer can also provide this service. On shrinkable soil where heave could take place a larger void is required to allow for movement according to the volume change potential. 5 2 10 damp proofing and ventilation. This allows air flow and ventilation to prevent the mould and dry rot that would otherwise occur over damp ground.

Ventilation is required in the same way as a suspended timber floor. 5 3 drainage below ground. Dry and wet rot spores are in the air all the time and only require wood of a certain moisture content to germinate and commence decay. For optimum results when addressing heat loss through a suspended timber floor the specification needs to ensure that high levels of thermal performance delivered by the insulation material are combined with airtightness and moisture control while at the same time facilitating a degree of breathability.

Suspended timber ground floors consist of the finished timber floorboards being attached to floor joists which are suspended above the subfloor of the foundation. Contaminated ground and radon. A minimum ventilation void of 150mm should be provided below the underside of precast concrete and timber suspended floors. The manufacturers may well work out the size of the concrete beams and provide the structural calculations.

This chapter gives guidance on meeting the technical requirements for suspended ground floors including those constructed from. Cross flow ventilation was traditionally achieved by placing sleeper walls see figure 2 at intervals throughout the sub floor. High volume change potential 150mm 300mm total void. The sleeper walls would be honeycombed in nature to facilitate airflow.

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. Unlike standard ground floor construction suspended floors are not sitting directly on the ground. The recommended minimum area of ventilation required for under a suspended timber floor is 1500mm 2 for every metre of perimeter of the structure. Subfloor ventilation is cross ventilation of the subfloor space between the underside of the subfloor and the ground surface under a building.

5 2 2 provision of information.