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https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl DIY Forum >> Building Questions >> External wall join help https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl?num=1437244396 Message started by Daveb on Jul 18^th, 2015, 7:33pm

Title: External wall join help
Post by Daveb on Jul 18^th, 2015, 7:33pm

Hi, i am in need of some advise. See pictures in my gallery

I was wondering, am I able to fill this join in with mortar or some flexable silicon?
I was going to do it, but got told by my father in law not to because it would stop the house from breathing and could have an effect on it???

[album]Daveb&1437243998[/album]

Title: Re: External wall join help
Post by thescruff on Jul 20^th, 2015, 11:09am

I would fill it with a flexible builders mastic.