Data Sheet:
Air Tightness Data Sheet
- Information suitable for:
- New build
- Retrofit
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Technical information
Air testing measures the rate of air leakage throughout the dwelling.
Air tightness testing is required on new building dwellings. If on a development, 50% or 3 of every house type (whichever is less) will need to be tested.
If the air leakage is lower than 3m³/h/m² @50 Pa then a Mechanical Extract Ventilation System will need to be in place to take the stale air out and bring in fresh air.
Air testing measures the rate of air leakage throughout the dwelling.
Air tightness testing is required on new building dwellings. If on a development, 50% or 3 of every house type (whichever is less) will need to be tested.
If the air leakage is lower than 3m³/h/m² @50 Pa then a Mechanical Extract Ventilation System will need to be in place to take the stale air out and bring in fresh air.
Hints and Tips
There are ways to reduce the amount of air leakage in a dwelling by:
Seal gaps and cracks
Use joist seals
Use Pro Clima Solitex Plus in roofs
Allow wires to pass through a Pro Clima Roflex
If a dwelling isn’t tested for air leakage then the default should be added which is 15m3/h/m2 @ 50Pa.
For a dwelling which isn’t tested but the same house type has, a margin of +2m3/h/m2 @ 50Pa should be added.