- Air Tightness
Compliance with Approved Document Part F, Part L (ROI) and Section 6 (Scotland) through design reviews, training seminars, preliminary audits and final acceptance testing 
- Air Tightness
Compliance with Approved Document Part F, Part L (ROI) and Section 6 (Scotland) through design reviews, training seminars, preliminary audits and final acceptance testing 
Air Permeability
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