bradders3109 Posted June 25, 2021 Share Posted June 25, 2021 Hi All, I have finally reached the stage where I need to apply an airtight membrane to the interior of the original house (225mm solid wall, 90 square meters). I don't like the thought of loose membranes and have been looking at passive purple as a sprayed solution. This is coming out expensive and I got to thinking whether a tanking slurry would work as an airtight membrane or any economical alternatives that others have used. thoughts would be very much appreciated. Link to comment Share on other sites More sharing options...
Adam E Posted June 25, 2021 Share Posted June 25, 2021 No idea of your build details but this might be a option https://www.ecomerchant.co.uk/news/paint-on-airtightness-really-are-you-kidding/ Link to comment Share on other sites More sharing options...
jfb Posted June 26, 2021 Share Posted June 26, 2021 Parge coat. Are you internally insulating or externally? Link to comment Share on other sites More sharing options...
bradders3109 Posted June 30, 2021 Author Share Posted June 30, 2021 Hi jfb we are externally insulating the current house and then building an extension with nudura which shouldn't need an airtight membrane. Link to comment Share on other sites More sharing options...
bradders3109 Posted June 30, 2021 Author Share Posted June 30, 2021 On 25/06/2021 at 21:28, Adam E said: No idea of your build details but this might be a option https://www.ecomerchant.co.uk/news/paint-on-airtightness-really-are-you-kidding/ Hi Adam I did look at Blowerproof but it was more expensive than passive purple. Link to comment Share on other sites More sharing options...
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