THE 10 MOST COMMON REASONS FOR FAILING AN AIR TIGHTNESS TEST
When a dwelling fails an air tightness test our air tester will use diagnostic techniques to determine the main air leakage pathways so this can be recorded in the failure report. We have collated the main reasons for failure in all our tests over the last 6 months to find the 10 most common un designed reasons for failing an air tightness test.
The majority of air tightness test failures could be avoided by ensuring the dwelling is ready for testing before the air tester arrives. This requires someone to go through our air tightness checklist thoroughly on site and ensure all the unregulated air leakage pathways have been properly sealed. The worst offending air leakage pathways were as follows:
In and around the skirting boards.
The window and door surrounds.
In and around the ceilings/suspended floors.
Behind and around the baths, toilets, and sinks.
Behind the kitchen cabinets.
Bathroom and kitchen ventilation extracts.
Riser and Services cupboards.
Around and through Loft hatches.
Around and through electrical fittings.
Chimneys and fireplaces.