Posts Tagged ‘boggess strip’

Stinky Ink = Curling Seams

March 25, 2018

Some higher-end wallpapers are screen-printed with an ink that smells like moth balls. We call this stinky ink. And it’s a stinker to work with – because the edges curl badly. The inked surface of the paper absorbs moisture from the paste differently from the backing, so the backing swells and expands, pushing the inked surface away… resulting in curled edges. The top photo shows the edges curling on the pasted and booked strip, and the second photo shows the edges curling on the wall. I tried a lot of tacts, but could not get the seam to lie down.

This paper has a selvedge edge that is to be trimmed off by the installer(straight edge and razor blade and a steady hand). When I tried this standard technique, the seams curled and would not lie flat.

So I tried another approach. I put the pasted but un-trimmed paper on the wall, and then used the double-cut technique. A double cut is essentially a splice – you position one strip, then position the next strip, overlapping an inch or so of the second strip vertically over the edge of the first strip, all while lining up the pattern.

More clearly, you’re overlapping the left edge of the new strip onto the right edge of the existing strip.

Then, using the custom-made trim guide tool seen in the photo, and with a strip of 3″ wide heavy polystyrene plastic (called a Boggess strip, after the guy who invented and sells it) on the wall to protect it from being scored, I used a new single-edged razor blade to carefully cut through both layers of wallpaper.

In the third-to-last photo, I am removing the excess paper left at the seams after this trimming. In the second-to-last photo, I am smoothing the paper back into place. It’s also important to wipe off all paste residue left on the surface of the paper.

Who knows why, but this technique results in nice, flat, tight seams, with edges that do not curl.

Same paper, same paste, same wall – but no curl. Go figure.

Double-cutting takes more time, patience, material, and equipment. But when it’s called for, it might be the salvation for a contrary paper.

Vinyl Wallpaper and Un-Straight Walls

June 1, 2015
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OK, a lot of technical stuff coming up, and a little hard to follow, but I will do my best to explain. Here I am hanging a faux-leather, textured paper-backed solid vinyl wallpaper with no pattern to match. In the left side of the first photo, I have just come from left to right around an outside corner. When you wrap wallpaper around a corner, you can bet that the corner will not be straight or plumb and the wall may even be bowed. That means that you cannot expect the right edge of this strip of wallpaper to be straight, and that means that you cannot expect the next strip of wallpaper to butt up perfectly against it.

Since this paper has no pattern to match, the solution is simple, if not easy. I am going to overlap the next strip and splice it in with the previous strip. But you don’t want to just overlap and slice through both layers with a razor blade. Doing so could: 1.) get paste on the surface of the first strip, which, since it’s a textured paper, would be hard to wipe off, and, 2.) score the wall, and that means that when the paper dries, it shrinks and puts “torque” on the seam / surface – and that could cause the surface to pull away from the the subsurface – keep in mind that here we have Sheetrock, paint, new paint, and wallpaper primer, one on top of another, so there are several layers that can all pull apart from one another. To put is succinctly, the end result is a curled seam – which cannot be glued back down.

So, in the first photo, in preparation for the double cut (splice), I have put a “Boggess pad,” which is a long flexible strip of polystyrene plastic under the seam, to protect the wall. You see a bit of it peeking out on the right side of the photo, and you see the ridge it makes under the paper in the center of the photo.

On the right side of the second photo is the new strip of wallpaper, coming to meet the existing strip. Along the edge of this new strip of wallpaper is a strip of waxed paper, and you can see some of it sticking out on the left edge. This waxed paper will protect the existing strip of wallpaper from the paste that is on the new strip of wallpaper.

In the third photo, the metal tool with the pointy top on the left is a special straight edge that I use for cuts like this. I have already made the cut along its edge, and you can see both the cut and the waxed paper on the left side of the cut. You can see a little bit of the hump created by the polystyrene strip under the vinyl paper, on the right.

In the fourth photo, I have pulled the vinyl strip on the right back a little, so I can pull off the waxed paper from under it. The polystyrene strip is still against the wall, under the vinyl paper on the left. I am about to remove that, too.

All this has taken some time, and another factor playing in here is “open time,” which means how long the paste will stay wet and allow you to fiddle with all this.

In Photo 5, I am about to smooth the two edges of the seam back together.

In Photo 6, you see how perfectly the edges meet. A double cut (splice) really gives you the most perfect seams, because the two pieces of paper are truly melded together. It does take a lot of time and materials, though, and is not really called for except in certain situations.

This room turned out looking great, and the homeowners were pleased. The homeowner did ask me why my price was higher than the guy who had hung paper in another room. From what I saw, the other installer did a good job in that room.

But I’m wondering if he has knowledge of primers and layers of wall surfaces and torque and open time, and if he has waxed paper on his truck and knows when to use it, and if he has a special $125 trim guide and knows how to use it, and if he has ever heard of a Boggess strip or if he just cuts into the wall and hopes it all holds together.

Bottom line … sometimes special situations call for special tools and equipment and skills.
Not saying another guy couldn’t do it his way and have it turn out looking great.
Just saying I’m glad I have these gadgets to use, and the know-how to use them to keep the homeowner’s wallpaper clean and unwrinkled.