Obtuse Angle Inside Corner

Digital Image

Digital Image

Digital Image

Digital Image

Digital Image

Digital Image

Digital Image

Digital Image


Wallpapering around corners, either inside or outside, can be tricky. But when you toss into the mix a corner that is not the typical 90* angle, it gets a lot more tenuous.

On an inside corner (see photo), you don’t want to wrap the paper around the corner, because corners and framing and Sheetrock and contractors are never 100% plumb or accurate, and thus your strip of wallpaper will come out of the corner off-plumb or wrinkled or otherwise unmanageable, plus you can end up with sections that cling tightly to the corner, and others that pull free, leaving a bubble under the paper in the joint area.

To prevent this, you wrap a teeny bit of the paper around the corner, cut a new trip, and then overlap that new strip into the corner, plumb it up, and then work your way out from there. That looks good in 90* inside corners.

But with obtuse angled corners like this one (Photo #1 (smoothed wall with clear Gardz primer applied), the paper may lie flat and tight to the wall, but that cut and overlapped strip will be fairly visible. Other things can be done to get rid of the overlap by eliminating the need to cut the strip, and to minimize any wrinkling at the outer edges.

To encourage adhesion in the corner, I “Velcro’ed” the area by applying a thin layer of paste, and then letting it dry to a barely tacky, but potent, state.

The material is a scrim (woven fabric) backed, textured solid vinyl wallcovering. It is thick, and only a little bit pliable. Here in picture #2, I worked the paper into the corner, and used my Euni Tool (metal plate) and other tools to really push it hard into the corner. A heat gun softens the plastic just enough to help it remember where the wall is.

Even though the vinyl is clinging tightly to the corner, coming out of the corner and moving to the right, you cannot be sure that the right edge of the strip of wallpaper will be hanging either straight or plumb. So it’s risky to try to butt a new strip of wallpaper to this edge.

A good alternative is to make a double-cut, which is a paperhanger’s term for a splice. That is, you overlap the papers and cut through both layers, so you can splice them together.

This pattern was the perfect candidate, because there was no pattern to keep aligned and matched up. So the design was not a concern… but logistics and surface stability were.

Using a razor blade to slice through two layers of textured vinyl wallpaper takes a lot of pressure, and that can put deep cuts into the wall below. When the wallpaper paste dries, or even just with time and humidity and temperature fluctuations, the paper can shrink, and that puts torque (tension) on the wall, which can cause an unstable surface to pull away from whatever is beneath it. Bottom line, you could end up with wallpaper seams that come open, and pull paint or Sheetrock off, too.

So how do you double cut (splice) two strips of wallpaper to get a perfect seam, without damaging the wall underneath? The answer is to pad / protect the wall. Many people use scrap vinyl wallcovering. But I have some better stuff – Boggess strips. Named after a wallpaperhanging colleague of mine who invented them. You protect the surface of the wallpaper from paste with plastic tape or waxed paper, and then place these clear plastic strips under where you want to make a double cut. Your blade will slice through the two layers of wallpaper, but will not get through the Boggess strip. Voilà! Paper cut and spliced, and the wall in still intact.

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