S Squidge Registered User Messages 12 9 Sep 2009 #1 I am currently investigating options of air tightness in a new build (block construction). Has anyone installed an air tightness membrane recently. If so, how have you found it and what was the approximate cost.
I am currently investigating options of air tightness in a new build (block construction). Has anyone installed an air tightness membrane recently. If so, how have you found it and what was the approximate cost.