Planning to renovate one of our rooms and discovered small black dots on the drywall after scraping off the wallpaper. Does anyone know what it could be? Behind that drywall is the shower. What measures should be taken?
since you have the shower on the other side of the wall, make a hole in the drywall or even better remove the whole drywall and check.
but be careful there might be pipes behind the drywall
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