” Shrinking ” a Strip to Make for a Good Corner

I’m hanging wallpaper moving from right to left. The wallpaper is 21″ wide. The width between my last strip (over the door) and the corner is 19″ wide. This means that my next strip is going to wrap around the corner by 2″.
This is not good. You never want to wrap wallpaper around an inside corner, especially a tiny amount like 2″. Corners are never straight, and thus the wrapped bit will be warped and un-straight. The next strip will never butt up correctly with it, leaving gaps and overlaps. You will also end up with a new strip that is not hanging plumb.
Also, wrapping around corners doesn’t allow for movement in the corner as the temperature changes in the room, or as the house shifts on its foundation.
The goal is to wrap the corner by about 1/16″ – 1/8″, and then overlap the new strip on top of that narrow wrap.

This is how I want my strip to land in the left corner.
Bottom line – if I want my next strip to wrap just 1/8″ around the corner on the left, then it’s going to overlap by 2″ onto the existing strip on the right. If that happens, we’ll lose 2″ of the pattern and have some eye-jarring cut-off pattern motifs.

So, somewhere, I need to “lose” 2″ of paper. Looking at the short seam above this window, I see where I can remove some paper without messing up the pattern too much.

I’ve removed the strip and used my straightedge and a razor blade to slice off 3/4″ of paper.
The blue plastic is there to keep paste off my table, and the shiny thing is a protective plastic strip I use to keep from cutting into the wooden table.

3/4″ removed.

Slid back together, you don’t much notice the very minor pattern mis-match created by the absence of the narrow strip.
This could work on a longer strip as well, depending on the pattern motifs.

Now the left corner is how I want it.

But the right edge of the strip is overlapping 1″ or more over the existing strip over the window. You can see there is a pattern mis-match, not to mention a bump where these two pieces overlap. So I’m going to do a double cut and splice these two strips together.

Splicing means you press hard to cut through both layers of wallpaper. Your blade will probably cut a bit deeper and dig into the wall, scoring the surface. This is bad, because an un-intact surface can give way when wallpaper paste dries and the material shrinks, tugging at the surface. This can actually cause layers of the wall to come apart ( delaminate ), which means the wallpaper will come up at the seam. Do a Search here to learn more.
To prevent this, I’m using a Boggess Strip (a clear, thin, flexible strip of polycarbonate Lexon plastic padding ) to put under where the splice will take place, to protect the wall. You can’t cut through this stuff!

The strip in place.

I’ve smoothed the left strip back into place overlapping the existing strip. Next I’ve used a short straightedge and a sharp (important) new (important) single edged razor blade to slice through both layers of wallpaper. Here I’m removing the top strip of excess cut-off paper.

Now I’ve pulled back part of the strip on the left so I can remove the excess wallpaper on the bottom. Note that the cut is a little uneven in areas, to cut around the leaves in the design.

Removing the Boggess Strip. This does put tension on your wall, so you’ve got to have a good wallpaper primer underneath, applied over a sound surface.

The two strips smoothed back together.

The view from below.

I used a pencil to touch up the edges of the leaves, to make them look more rounded and natural.

The polycarbonate strips are named after the inventor, Steve Boggess, a colleague and fellow member of the Wallcovering Installers Association. Get them here: https://www.steveboggesspaperhanging.com/lexanpage.htm

Getting a “Fat Cut” in Corners – Using a Euni Plate

You never wrap a strip of wallpaper around an inside corner.

Corners are neither straight nor true-to-plumb. So trying to wrap around a corner will result in a warped edge, and most likely a strip that is wonking off-plumb.

So you cut your strip of paper vertically in the corner, leaving a tiny bit wrapping onto the new wall. See second photo.

Your next strip of paper will overlap on top of this narrow wrap.

Splitting the strip and overlapping means that you will cover up and lose some of the wallpaper design. Hence, the less you wrap around the corner, the less of the design will be lost in the overlap.

The thickness of the rolled edge of this stainless steel plate / tool is just perfect as a trim guide! Trimming against the rolled edge will yield a 1/16″ – 1/8″ wrap around the corner. So, when you overlap your next piece (the strip you split in half vertically), you are only losing a fraction of the wallpaper design.

This tool has other uses as well – some are too complicated to get into here. But the thinner edge can be used as a trim guide for regular wallpaper work. It’s shorter than most trim guides, so it can be used in small areas. The rounded edges can be used to press paper into areas, or to crease paper before trimming – without leaving marks. And the angle has a purpose – again, too complicated for here. Plus, there are other plates with different angles available, each with different uses.

This ingenious gizmo was conceived by Eunice Bockstrom, a Canadian and fellow member of the Wallcovering Installers Association (WIA). Once or twice a year, she has a metal shop make a run of these metal plates. Eunice has also invented some other very helpful tools, and they also become available when the factory makes a run of them.

We call all of these Euni Tools. 🙂

Challenges With 40″ Wide, Thin Vinyl Mural

See other recent post(s) for more info on this material and its install.

When ordering, from the materials offered, the homeowner chose this vinyl option, because she loved the slightly textured, “pebbled” surface. I would have much preferred she went with the more predictable and cooperative non-woven material.

The instructions said to paste the wall. Which is what I did. But I believe this material would have performed better if they had said to paste the product.

Pasting the product would have evened out moisture absorption from the paste, as well as expansion as the substrate wetted-out. That may well have eliminated the wrinkles you see in the photo.

It took a lot of patient work with both the smoothing brush and the plastic squeegee to work these wrinkles and bubbles out of the wallpaper. The resulting flat surface was not necessarily the Holy Grail … because often the far edge of the wallpaper will get distorted and / or warped / bowed.

It’s really difficult to hang a new, subsequent strip next to a strip with a warped edge. It’s hard to butt the seams, and plus additional strips get more and more warped. Eventually, you get to where the resulting wrinkles are so large that you cannot work them out.

This is one reason why you start hanging from the midpoint of the wall. This helps disperse any such wrinkles or other imperfections equally across both the right and the left sides of the wall.

I was lucky that I had only four panels and three seams on this install.

As mentioned above, a non-woven substrate would must surely have eliminated the wrinkle problem. Non-wovens are made of synthetic fibers (including fiberglass), so they do not expand when wetted by paste or water. So you can paste the wall and then apply the wallpaper, without worries about the paper stretching out of shape

Warping Wallpaper – Grasscloth

Well, this was a first for me. I can’t say that I remember having a grasscloth that stretched and warped out of shape this badly.

What’s odd is that, after I pasted and booked the wallpaper, it was perfectly lined up and flat. It was only after the paper had sat for the resting period, and then I unfolded it and took it to the wall, that it started warping out of shape.

My first strip laid against the wall nice and flat, but did not line up against my laser level’s red beam, moving to the left the farther down the wall the strip went. The subsequent strip to its right, naturally, would not butt up against the first strip. However, this second strip did line up against the laser plumb line, on both the right and left sides. So I left it on the wall.

But I had to tear off and discard that first strip.

I had problems with many of the strips. As you can see, there was major warping and wrinkling. I was unable to smooth out most of these warps.

Some of my colleagues have suggested that my trimmed edges were not straight. And I admit that I sense that my ($200!) straightedge is not true (perfectly straight). But a 1/8″ discrepancy over a 9′ drop should not result in wrinkles of this magnitude.

I think that the substrate that S&L is using is absorbing moisture from the paste unevenly, and thus creating the warps and twists.

The only way I could make this work was to do a double-cut (spliced seam). I smoothed the grasscloth onto the wall as best I could, even though both the right and left edges still presented wrinkles.

I carefully pulled away from the wall the left edge of the previous strip (having applied extra paste, to keep everything wet and “open”). Between that edge of the strip and the wall, I placed a “Boggess Strip,” (invented by a fellow WIA member) which is a thin strip of 2″ wide polyethelyne plastic, that will protect the wall from my razor blade.

Now hanging the next grasscloth strip, I then covered the underside of the right (wrinkled) edge with blue plastic tape (also invented by the same WIA genius member). This would keep paste off the surface of the strip I was overlapping it onto. Then I smoothed the paper onto the wall, allowing the right side of the strip to overlap on top of the previous strip, by 1.5″.

I worked out wrinkles as best as I could, but some insisted on remaining. I then took my EuniTool straightedge (invented by yet another WIA member), and used it as a guide, along with the red light line from my laser level, and a new, fresh razor blade, to cut a straight, plumb line between the edges of the two strips.

The grasscloth was thick, and I had to press really hard to cut through both layers. The Boggess strip prevented scoring into the wall. This is important, because an un-intact wall can delaminate under the stress of drying / shrinking wallpaper, and this can cause the seams to pop open.

Back to the double-cut. Once the cut was done, I removed the plastic Boggess strip from the wall, and the protective blue plastic tape from the edge of the grasscloth, as well as the two excess strips of paper that I had just cut off. (Do a Search here to see pics and read more about the double cut / splice process.)

I could then smooth the newly-cut edges of the two strips together.

All this takes a lot of time.

I still had more strips to hang – and each required the same procedure. You only have so much “open” time before a piece of wallpaper starts sticking to the wall and cannot be jacked around with anymore.

I had to jump to the left edge of the current strip I was working with, and add a Boggess strip behind it. And then I had to paste and book my next strip, and apply some blue tape to the area that would overlap the previous strip. Wait a few minutes for it to book and absorb the paste.

Then repeat the double cutting procedure used on the first strip.

All this caught me off guard, and it threw off my engineering of the wall and my planned width of the strips. It also took a lot more time … I spent 5 hours hanging just these 5 strips.

Bottom line – I got ‘er done … But I am definitely NOT going to recommend Serena & Lily grasscloth to future clients.

And I am VERY grateful to my WIA colleagues for inventing tools and gadgets that help with these tricky situations, which I’m glad I bought and had stashed in my van, and for sharing their knowledge and experiences so I knew what techniques I might try.

How Do I Hate Thee? Let Me Count The Ways…

This wallpaper is by Anderson Prints. It was more than a little difficult to work with. I hung it in two different colorways, and both were equally cantankerous.

~ Top photo – see the streak of darker color at the tip of my scissors? This defect ruined a 9′ strip of paper.

~ Second photo – look at the left edge of the toilet, from that corner up to the ceiling … see the darker color? Every strip showed a little darker color at the edges. Close up, you don’t notice it, but from a distance, there is a vertical line that catches your eye. This is on every seam, in both colorways. So, from a distance, you see this faint but noticeable vertical line every 27″, all across the room.

~ The substrate sucks up paste, enough so that after pasting and booking for a few minutes, by the time I got it to the wall, there was virtually no paste left to hold it up, and absolutely no paste on the edges. I tried several tricks – rolling paste under the seams, spritzing the edges with water, dipping the edges of the booked strips into water to keep them hydrated, unbooking and repasting, unbooking and spraying the back lightly with water to reactivate the paste, and finally, the best option was to paste the back as normal, but use a squirt bottle to add a bit of water, and then cut the booking time a little.

~ No matter which pasting technique was used, particularly on the tan colorway, in some areas where the ink crossed the seam, the paper wanted to curl back and leave a tiny gap.

~ The pattern matched in most areas, but dropped a little in some of the motifs, resulting in a mis-match. Then it would match up perfectly again as you went further down the wall.

~ The paper, particularly the silver colorway, twisted and warped horribly. I would butt a strip up against the previous strip, matching the pattern, then go to smooth the rest of the strip against the wall – only to find HUGE puckers and warps. OK, you can tease away minor wrinkles. But when you have several warped areas that are each protruding 1/2″ away from the wall, it’s really difficult to get that strip of paper to lie flat against the wall. I spent at least 20 minutes working and easing the puckers out of one strip and getting the paper to lie flat. To be honest, I’m astonished that I was able to do that. This particular wall had only three 7′ high strips … Because the warping increases as you hang subsequent strips, if I had had to hang many strips in a row, and taller strips, such as on a bedroom accent wall, I don’t think it could have been done without making some relief cuts or double cuts and resulting in some serious pattern mis-matching.

~ The tan colorway was reasonably durable, plus minor creases would pretty much disappear when the paste dried and the paper pulled flat to the wall. But the silver colorway was very delicate, and was prone to creasing at the drop of a hat. Don’t fold it, don’t wet-trim it, unbooking a pasted strip was very likely to cause a crease, and ditto when pressing the paper into a corner to trim … and working around that toilet was the prime area to put stress on the paper and cause more creases. This toilet was butted up against the wall, so it was impossible to slip the paper behind it, so it was necessary to cut the paper to fit around it. That’s hard enough to do with an electrical outlet that protrudes a half an inch from the wall, but veeery difficult when you have something as three-dimensional as a toilet. I must have spent the better part of an hour working the paper around and behind and under that toilet. Note to Self: Next time, make the homeowner pull the toilet out of the room!

~ The silver colorway had a metallic sheen, and every way the light hit it made the pattern look different. It was literally impossible to see the pattern match in some instances, particularly when turning a corner. What looked like a tan line on the right wall would literally show up as a silver line on the left wall. Look at all the horizontal and vertical lines in this design… It was virtually impossible to tell if I had the right line matching up with its proper partner. Trimming on the table (such as when I needed to split a strip) was equally difficult. I was just about impossible to tell design from shadow, and to know if I was cutting straight along the pattern.

~ Metal left marks on the paper. So I had to be very careful while using my straightedge, as well as other tools such as scissors, trim guide, etc.

~ The paper wouldn’t slide around on the wall as most do, so it was difficult to get each strip perfectly positioned.

~ It ate razor blades like crazy. The paper somehow dulled blades faster than even heavy vinyls.

~ When I cut a strip off the bolt, it wanted to stay rolled up. This made it very difficult to trim or paste the strip. So I had to roll all the strips backwards, until the paper relaxed and got rid of the “memory” to curl.

Most of these issues have to do with the substrate used by the manufacturer, but toss in the metallic ink and whatever engineer screwed up the pattern match.