BS EN ISO 140-4:1998

This Standard is now Withdrawn by BSI, however, this is the standard that is noted in SITMA’s Scope.

Measurement of sound insulation in buildings and of building elements – Field measurements of airborne sound insulation between rooms

SITMA Members can buy this through The Building Performance Hub at a discounted price. Once you have bought the standard, you will receive your copy with your company name watermarked on each individual page. This can take up to 5 working days.