Rusted Drywall Corner Bead – Bad News for Wallpaper

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I have just stripped wallpaper off this wall. The outside corner of the drywall shows a lot of rust along the metal corner bead. This is fairly common in humid bathrooms, but in this case, the room is a kitchen.

This is a big problem, because rust will bleed through wallpaper (and paint, too), creating a stain on the surface of the new finish. Other materials can cause staining, too, such as grease, ink, smoke, water, wood sap (knot holes), crayon, lipstick, etc.

But it’s easy to fix. A good sealer / stain blocker will seal off the rust (or other staining agent) so it will not leach through the new decorating material.

I like oil-based KILZ Original (not latex). But it’s noxious stuff, and will make you high if you breath the fumes. I wear a chemical respirator when I apply it, and ventilate the room well.

There are other water-born products that are made to block stains that are not as likely to kill brain cells. 🙂 If you are interested in trying one of these, ask your paint store professional (meaning, a true paint store with knowledgeable staff, NOT a box store with rotating employees) for recommendations.

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