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seams on exterior walls
- Thread starter marse gordon
- Start date
It looks like ordinary mastic has been used to seal expansion joints instead of https://www.google.com/search?q= se...YQIRgKGAqYAwCSBwE5oAeTYA&sclient=gws-wiz-serp but I may be wrong.
Do you have EWI?
Polysulphide mastic is used in construction joints. Expensive but good gear.
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