Ink Is an Enemy of Wallpaper!

Digital ImageThe Sheetrock on this job has a lot of tears, so to get it ready for wallpaper, I am skim-floating it, to smooth it. The horizontal red line and the red numbers you see are where someone wrote on the wall in red ink, way back in the ’60’s when this Clear Lake home was built. Mirrors covered this wall for decades, so the ink never showed.

But if I were to hang wallpaper over this ink, it would, rather quickly, I am betting, work its way through the paper and show up on the surface. Several substances will do that, including blood, rust, water stains, grease, and ink – which is why we contractors (are supposed to) only use pencil when writing on walls.

The best product to seal this ink is oil-based KILZ, which is a wonderful sealer and stain blocker. However, putting an oil-based product on top of another oil-based product, like ink, sometimes does not work well. So here I have gone over the ink with joint compound. I have found that “mud,” as we call it, contains stains a little better, plus it is porous and allows the sealer to soak in, creating a better seal. As you can see, the ink is working its way through the joint compound, too.

So, once the mud is dry and sanded, I am going to put Gardz on the area. Gardz is a very thin, watery sealer that will soak into the mud, hopefully sealing it. Just to be sure, I will add another layer of mud over that. Once that is dry, I will apply a coat of KILZ. If the stains continue to show through, I will apply more coats of KILZ, and possibly more coats of mud, as well.

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