Mirror Tar – Bad For Wallpaper

Mirrors are commonly attached to walls with mastic – a sort of tar adhesive. When installing this new mirror, the workmen got some of the tar smeared on the wall below.

This is bad. Tar, like many other substances, will bleed through paint and wallpaper.

So this stain will need to be sealed over with a stain blocker. Or, better, cut out of the wall entirely, and then the damaged wall will have to be repaired. Learn more on this by doing a Search in the upper right corner.

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