BCA Technical Guidance Note 20: Ensuring adequate ventilation to naturally-ventilated dwellings with high levels of as-built air permeability

16.03.2015

This document is part of our suite of technical guidance notes from the Building Control Alliance.

BCA Technical Guidance Note 20: Ensuring adequate ventilation to naturally-ventilated dwellings with high levels of as-built air permeability195.79 KB