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https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl DIY Forum >> Building Questions >> Blister on wall what is it https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl?num=1461452075 Message started by Mwwardy on Apr 23^rd, 2016, 11:54pm

Title: Blister on wall what is it
Post by Mwwardy on Apr 23^rd, 2016, 11:54pm

[gallery]Mwwardy/1461451419.jpeg[/gallery]
A blister near my back door just appeared

Title: Re: Blister on wall what is it
Post by woodsmith on Apr 24^th, 2016, 8:13am

Doesn't really look like a blister to me, more like it has been knocked which has perhaps loosened a previous repair? If you are sure there is no damp just remove all the lose material and fill it with Polyfilla or the like. There appears to be a mark on the wall in the background that looks more like damp, but it's hard to tell from the photograph.