EWS579 Boulder Developments Superfoil SFTV


This is an assessment of Superfoil SFTV, a reflective membrane used to provide a vapour control layer in walls and flat and pitched roofs.

It will also contribute to the thermal insulation performance of the element.

It comprises Polypropylene reinforced laminated foil. It is supplied 50mm in a roll width of 1.5 metres of lengths 25 and 50 metres.


Valid until 27th August 2022


Please Note: Every care was taken to ensure the information was correct at the time of publication. Any written guidance provided does not replace the user’s professional judgement. It is the responsibility of the dutyholder or person carrying out the work to ensure compliance with relevant Building Regulations or applicable technical standards.


Boulder Developments LTD
Registered Office:
Black Horse Farm
Main Street
NG23 6JN
01636 639900