Browse Forums Building Standards; Getting It Right! Re: Do you need to install wall wrap for spray foam? 4Dec 06, 2013 7:07 am Robbie1950 Regardless of spray or not your house NEEDS to be wrapped. The sisalation paper not only works for thermal rating but as 'waterproofing' if water some how gets behind the bricks. That is not correct. The sisalation has no bearing on controlling water penetrating into the cavity but with using spray foam it would prevent the foam bridging the cavity. Peter Clarkson - AusDesign Australia www.ausdesign.com.au This information is intended to provide general information only. It does not purport to be a comprehensive advice. There is nothing in the various codes and standards that puts this requirement on the builder to do. I think that is what you are asking. Don't waste time trying to get… 5 2422 Vapour permeable wraps are recommended for any climate and main think it is allow walls to breath (i.e. remove water vapour) while at the same time, providing protection… 4 9788 Oh no! I would use a can of expandable foam ( there are some that will take render) then cut it back and render over the top 1 4148 |