STBA’s moisture risk assessment and guidance

STBA’s moisture risk assessment and guidance report explores the problems caused by moisture in buildings and the mechanisms for moisture transfer. At the time of sharing it here, this is still a draft consultation document.

The report makes the case that moisture can present a risk not only to the fabric of a building, but also to the health of the occupants (eg. by encouraging mould spores). It observes that the main risk of moisture problems is at junctions which would include joist ends where sudden cooling can cause condensation. STBA has always sounded a cautionary note on any interventions that render a traditional breathable structure more airtight (eg. by installing non-breathable external or internal wall insulation).

For more on the risks of moisture see our article ‘Is interstitial condensation a risk?‘.

Many SuperHomes have either internal or external wall insulation. Why not quiz one with a home similar to your own about their insulation choices?