Posts Tagged ‘unlevel’

Grasscloth Engineering and Logistics – Technical Details Post

August 21, 2022
Grasscloth is a natural material that cannot be matched from strip to strip, so all the seams will be visible . In addition, there is usually a slight but noticeable color difference between strips / panels (called shading or paneling ) . So it’s important to plot the layout of the strips to give the most visually pleasing overall look. Usually this means balancing the width of strips so they are all equal , at least on the same wall . We call this engineering .
This wall presented particular challenges , due to the widths of the elements. Grasscloth comes 36″ wide . You can use your straightedge and a sharp razor blade and trim it down to any width you want.
The width of both the large wall spaces to the right and left of the bank of windows was 34.” The width of each window was about 35.” The width of the two spaces in between the windows was 7.”
So you’d think I could trim my panels on either side of the windows, and then over the windows, to about 34″-36″ – give or take a few inches (or fractions thereof).
But that would leave me with two 7″ wide strips between these 35″ panels. Although the look would be uniform and mirror-image from the center outward, moving from right to left you’d have: 35,” 35″, 7,” 35,” 7,” 35,” 35,” … those 7″ breaks were just not going to look right.
One option was to determine the width of the wall (189″) and make each strip an equal width. This worked out to six strips, each at 31.5″ Not good, because this would mean a seam down either far side. And since those sides were 34″ wide, that would mean a 31.5″ wide strip and a strip 2.5″ wide. Not attractive at all, and it would use up an extra strip of wallpaper.
This six strips @ 31.5″ wide scenario might also land with a seam smack in the middle of those 7″ wide interludes in between the windows. Not attractive at all.
So I decided to make the two outer strips 35″ wide. That left 119″ of wall space above the windows to be covered with wallpaper. Do some math and you get four panels of 29.75″ wide. This gave a balanced and uniform look to the area over the windows, and also prevented seams from landing between the windows.
Moving right to left, I cut and hung the full length outer strip first. Then I cut and hung the strip over the window on the right. Then I measured to find the centerpoint of the window in the middle. Turns out it was a bit less than 29.75″ away. So I trimmed that next over-window strip accordingly.
Once that was in place, I measured from that center point above the middle window out to where my left full-height panel would fall, 35″ out from the wall. Took the resulting measurement and divided by 2. Lo and behold, each of the next two panels over the window was going to be a bit wider than 30.” No problem. No one (but a paperhanger or maybe an engineer) is going to notice a 1/4″ or even a full 1″ difference in widths between this strips over the windows.
Another thing to point out … it’s important that I took measurements before cutting these strips for this second left-hand section. Because, since grasscloth comes at 36″ (and walls can be wonky), if my strips had been narrower (say, 28″), that last full-height panel on the left might have ended up needing to be 37″ wide – and that wouldn’t work because it only comes 36″ wide – plus you need at least 1/8″ to wrap around the corner.
Luckily I had the flexibility to be able to trim the panels over the windows to any width needed, to accommodate all this.
If you’ve followed all this so far, let me also toss in that we also need to figure how to get paper in between those windows. More on that below.
In this scenario, I’m moving from right to left.
Area beneath the windows needs to be treated in the same way, and preferably with widths that match what’s going on above the windows. In addition, it’s tricky because after you move across 12′ of wall space, the strips above and below the windows are going to twist and torque out of shape, so that last full-length panel on the far left might not butt up perfectly with the last strip under the windows.
The grasscloth is black , and my wallpaper primer is white . It’s common for teeny gaps to appear at the seams . In this case, it’s likely that white wall would peek out from those gaps. So I like to stripe under where the seams will fall with dark (diluted) paint . This takes measuring , plotting , and also a heat gun to get the paint to dry before the wallpaper hits it, to avoid staining. You can do a Search here to read more about this technique .
Now let’s talk about getting wallpaper in between those windows.
As you can see in the photo, if I hang a 30″ wide strip, a whole lot of paper is going to be cut off and thrown away. Also, a whole lot of sticky, pasted paper is going to bump against that window molding and maybe even the window glass. A lot to clean up! And unwieldy, to boot.
My solution was to stop the wallpaper just a little below the tops of the windows. Then I would patch in a 7″ wide strip in between the windows. This is trickier than it sounds, because, if it were a paper wallpaper, I could simply cut along a design motif and overlay the 7″ wide piece. But grasscloth is thick and overlaps don’t look good. Also grass has no design elements , and the reeds of grass don’t necessarily fall perfectly horizontal , and even if you cut everything perfectly true to square , if the window molding is a teeny bit off-plumb , then your edges won’t butt up perfectly.
So that’s a good reason for striping the black paint under where the butt join will occur.
Same thing for the sections under the windows. I measured and positioned the strips so that the top edge (which I had trimmed to be perfectly horizontal) fell between the narrowest part of the windowsill molding, for less visibility.
I admit, instead of butting the two pieces, here I did overlap the 7″ wide strip about 1/4″ onto the piece under the window, right at that narrow junction. It’s only about 3″ wide, and I figured no one is going to be examining it that closely, anyway. This saved me about a half an hour of measuring, trimming, testing, repeat, repeat.
This is my second window interlude, and by this time I had realized that it’s hard to trim stiff grasscloth around intricate moldings precisely . So I used paint to fill in the edges around the window molding, just in case there might be any gaps between the grasscloth and the molding, so you would see black instead of the white molding paint. I did this with a small sponge; if I had used an artist’s brush it would have been a bit neater and tighter to the conforms of the molding. But sometimes you’ve gotta relax and realize that no one’s going to be scrutinizing the insides of moldings below shin-level.
Area over windows finished, with drapes back in place.
Turns out this particular grasscloth is so uniform in color (quite unusual, I will add), that you can’t really see the panels , nor their equal widths , anyway. I’m still glad I took the time to do all this math and trimming.
Area below the windows, done. That last seam on the left bears some explanation, too. Moving across the top of the windows, I measured that that last strip – the full-length strip – would need to be exactly 35″ wide. It butted up nicely to the last strip above the windows.
But, due to twisting , shifting , expansion , unlevel and unplumb walls and ceilings , and other factors, there is a really good chance that that last 35″ wide strip would not butt up perfectly with the last 30″ wide strip under the window . So I planned to splice these last two strips together.
Yeah, the drapes are hanging there, I coulda overlapped the two strips about 1/2″ and the drapes would have covered it. With a thin wallpaper, I probably would have done this. But grasscloth is thick, and an overlap would be visible , and also the adhesive / paste can’t be trusted to adhere as well to grass as it would to paper .
So I plotted for a splice. Instead of trimming my last strip under the window to 30″ (read above), I trimmed it to 32″ wide. That way, when I hung the last full-length strip to the left, which was 35″ wide, it overlapped the piece under the window by a few inches. Then I did a double cut and spliced the two pieces. See below for details about that technique.
Grasscloth is 36″ wide, and this wall area is wider than that. So two strips were needed. This means you’re going to have a seam, and since grasscloth seams are always visible, it looks best to plot to have the seam fall down the center. It uses more wallpaper to do this, but it looks much better than having, for example, a 36″ wide strip next to an 8″ wide strip.
As mentioned above, in case you get thin gaps at the seams, a dark stripe of diluted craft paint under where the seam will fall, will prevent white wall from showing through.
Rounded / bull-nosed edges and corners have been popular in new construction for at least 10 years. I wish they’d go away. They’re very difficult to trim around, and hard for the paper to conform to and adhere to.
It’s very hard to trim around that rounded edge, because the paper is hanging over and blocking your view, because grasscloth is thick and stiff and your fingers can’t feel through it, and because the edges aren’t necessarily true and plumb so a laser level or other level won’t help you much.
I use this little gadget as a trim guide. It’s actually a small section of the same corner bead material that drywallers use when they assemble these walls. Cut to about 1″ long and notched in different places where you might trim along the edge of the wall.
It’s intended that you place your trimming knife in one of the notches and slide the gizmo along the edge and make your cut. I find that awkward and also inaccurate. So I prefer to use the notches as a guide and mark where I plan to trim with a pencil. Since this wallpaper is black, I used this marking pencil from my home sewing kit instead. Chalk might work, but I was afraid it might now wipe off completely.
The pink pencil line was barely visible, but it was enough for me to use a scissors to trim along the grasscloth. I like this better than using a razor blade as I can see better, and also less chance of scoring into the primer or wall. Which raises its own set of issues – do a search here to find previous posts.
Inside view of the trim guide.
Finished arch. Note the four panels of equal width above the arch. And two flanking full-height panels also the same widths.
I was lucky that there was no pattern to match, so I was able to butt my two flanking strips right up to the edge of the bull-nosed corner. No trimming needed! Then I measured the remaining width between these two strips (the area over the arch), divided by four, and cut four strips of equal widths.
I hung the two on the left, and then one on the far right. This left one strip still to be positioned to the right of center. So the pieces are going to meet over the arch, rather than the last strip falling in a corner.
Same as the last strip under the window (discussed above), it’s really difficult to get your last piece to fit in here perfectly. I’ve done it, but it takes a lot of measuring, trimming, testing, retrimming, and often starting all over again.
So I did a double-cut / splice.
A double cut involves cutting each strip an inch or so wider than it should be, and overlapping the two. Then you take a straight edge and sharp razor blade and cut through both layers. This handy tool is a wonderful non-slip guide for this process. It was invented by an installer colleague in the Wallcovering Installers Association ( WIA ) and she has them fabricated in various lengths (along with other cool tools ) and sells them on-line. Contact me if you’re interested.
Anyway, it takes a lot of strength to cut through two layers of grasscloth, so somewhat difficult for lil’ ol’ me.
You also want to be sure to not cut / score into the wall, because the tension of drying wallpaper can tug at the wall and cause it to actually come apart, leaving an open seam that’s difficult to repair.
So you’ve got to put some padding under the wall where the cut will take place. I use special strips of polystyrene (hard but flexible plastic) to pad the wall. Also invented by a colleague in the WIA , who also sells other cool tools and supplies. Contact me if you’re interested.
This black grasscloth was printed on a white substrate. If the seams aren’t absolutely tight, there can be worries about the backing showing through to the front. So sometimes we’ll take a piece of chalk or pastel (never oil pastel or permanent markers because they bleed and stain ) and run it along the edge of the paper – from the back, and taking care to not get chalk on the surface.
I do this frequently with dark papers ( do a search here to see previous posts ) but opted not to do it with this grasscloth. It wasn’t necessary, and might have stained the porous reeds of the grass. It was beneficial, though, to have striped dark paint on the wall under the seams, as mentioned above.
Ugh. Grasscloth comes 36″ wide, and this section of wall is 38″ wide. It’s not visually pleasing, nor is it easy from an installation point of view, to have a 36″ wide strip next to a 2″ wide strip. Or to use scraps and put a 25″ wide strip next to a 13″ wide strip.
So best to plan two strips of equal widths. Two strips, each 19″ wide, with the seam down the middle.
Actually, the strip on the left was 19″ wide, but I trimmed the strip on the right to 21″, because I like the wallpaper to extend 2″ over the top of the door molding. This provides a more stable surface in case of shifting foundation or walls, and less likelihood (knock on wood) of the seam opening up should the house / drywall experience shifting.
Note that design “rules” caution against seams down the middle of spaces. But it would have been more visually distracting (and used up more paper) to have made three strips of each 12.75″ wide. And would have looked even dumber to have used scraps left from other walls and put together two strips of disparate widths.
So the homeowner and I discussed during our initial consultation , and she was happy with the center seam. Once it was all finished, this particular grasscloth was so even in tone that you barely see the seams, anyway. Win-win!
This did use up additional paper, though, as noted in a previous photo above.

Silvery Geometric Trellis on Living Room Wall

July 30, 2021
This wall was originally papered in a similar but more rigid pattern. Here the paper has been stripped and the walls primed.
Pattern is nicely centered. Hanging just this one wall took me about six hours. Note the unlevel floor line. Ditto the ceiling. This makes geometric patterns particularly challenging. You’ve just got to accept some imperfections.
In the Anna French line by Thibaut. Nice material.

The February 2021 freeze caused burst pipes, and that meant a whole lot of damage to this home in the Timbergrove (Heights) area of Houston. Once the contractor was done fixing the wall, I came in to replace the wallpaper.

This was a non-woven product. On a single accent wall, I will often paste the wall. But with all these turns, pasting the paper was a better option, because it renders the material more pliable, and also grabs the wall more quickly and tightly.

Free-Form Rainbow for Baby Due Soon

March 21, 2021
“Before” wall, smoothed and primed.
Measurements done, strip placement plotted, material rolled backward and ready to hang.
Start in the center, to ensure the rainbow lands behind the crib. This is the first three strips.
Although the paper is smooth, the printing method makes it look lightly textured.

Momma chose this soft, water color-y rainbow mural by Anewall for her baby girl’s nursery.

The wall had to be carefully measured, and specific dimensions sent to the manufacturer, to ensure that the custom-printed mural would fit the wall and also have sufficient “bleed” (extra 2″ around EACH side), to allow for trimming and for unlevel and unplumb ceiling and walls.

Don’t let “custom printed” scare you. Modern digital printing makes this easy and affordable.

Just be sure that the paperhanger measures (not Handy Hubby) BEFORE you order.

This was printed on a non-woven material, and I hung it using the paste-the-wall method.

The manufacturer is Anewall. I like the products from this company.

They offer several substrate options. I guess I like the non-woven (paste-the-wall) version best. Second to that is the pre-pasted. Not so fond of their vinyl offering, and definitely wouldn’t work with a peel & stick.

The home is in the Bellaire neighborhood of Houston.

Measuring for a Mural – Add 2″ Extra to EACH Side

August 3, 2019


One common mistake that homeowners make when ordering custom-sized murals is that they will meticulously measure their wall to the 1/2 inch, and order the mural that size.

What they are supposed to do is to add 2″ of “bleed” to each side – a total of 4″ to each dimension.

This extra paper allows for trimming at the ceiling and baseboard (see photo), and it allows some wiggle room to accommodate crooked or unplumb walls and unlevel floors and ceilings.

Clever Wine Crate Pattern for Outside a Wine Room

July 24, 2019


In the top picture, out of sight to the right is a walk-in wine room. The homeowner has loved this pattern for years, and finally found a place to put it – right adjacent to the wine room!

The wine case pattern is by Brunschwig and Fils. Unlike the other papers by B&F that I have hung, this one is a vinyl, with a slightly embossed surface (the lines between the boxes are slightly indented). It has a selvedge edge that had to be trimmed off by hand. Unlike most hand-trimmed papers, this one had no trim guide marks, so I had to wing it on where to place my straightedge.

The paper backing soaked up paste quickly, and each strip was nearly dried out by the end of the booking time, so I ended up rolling a little paste on the wall where the seams would fall, to augment. Once it was on the wall, the paper adhered nicely.

The floor was unlevel, and so the paper ran crooked along top of it, making it look like the bottom row of boxes was running downhill. To level out this bottom line, I used my straightedge and a razor blade to cut off the bottom “boards” along the black line. I trimmed the strip to 1/2″ high. See 4th photo. I used a piece of artist’s chalk to color the cut edge, so white would not show along the top.

Then I appliquéd the strip over the bottom of the paper on the wall, butting it up against the baseboard. Wallpaper paste won’t stick to vinyl (it’s too slick), so I used special adhesive on the area of the overlap.

In the bottom photo, you can see how nice and even the bottom line looks.

The interior designer for this job is Stacie Cokinos, of Cokinos Design. The home is in the Woodland Heights neighborhood of Houston.

David Hicks’s “Hexagon” in a Master Bathroom – Note the Freestanding Bathtub

March 15, 2019


David Hicks’s “Hexagon” pattern by Cole & Son is a well-loved design. I’ve hung it a number of times. Here it is in a large master bathroom in a very Mid-Century Modern home in the Piney Point (Villages) neighborhood of Houston.

Just this bathtub alcove, along with two small mirror walls over the his-and-hers vanities, received wallpaper.

Just the tub alcove by itself took me over six hours to hang (six single rolls). The complicating issues were unplumb walls, unlevel ceiling and soffit, a geometric pattern that the eye wants to see marching evenly across the walls, thick stiff paper that is hard to manipulate, ink that wants to crack and flake off the paper, complicated room lay-out, and … squeezing behind that tub to put wallpaper on the walls around it!

There are some spots where the pattern match is off a bit, and some areas where the crookedness of the walls is very evident (meaning that the pattern goes off-kilter). But overall, the room turned out great.

The design is called “Hexagon,” and is by David Hicks, designer for Cole & Son, a British company who has been manufacturing wallpaper for way more than a hundred years.

It’s a non-woven material that can be hung by the paste-the-wall method, but I chose to paste the paper, which made it more pliable, and which made it easier to get paste where it needed to be when going around the window areas and behind the tub.

Animal Blocks in a Baby’s Room

December 25, 2018


A new baby will soon be welcomed into the home of this young couple in the Houston Heights neighborhood called Norhill (or Woodland Heights). Mom wanted something gender-neutral, and found this colorful and adorable shapes-and-animals-in-blocks print on line at Lulie Wallace.

This went on just one accent wall of the room, but it is tame enough that it would work OK if put on all four walls.

I skim-floated the walls first, to smooth out the light texture on them, then followed with a primer coat of Gardz.

This wallpaper is a bit atypical, because it is pre-pasted, which means it comes with a thin layer of paste on the back that you activate with water (instead of having to roll paste on the back of every strip). I do like the pre-pasted papers. I do roll a light coat of paste on the wall, to augment the manufacturer’s pre-paste.

Another dissimilarity is that the paper comes packaged in individual strips, rather than traditional rolls with several strips rolled up together.

Even more unusual is that the strips were meant to be overlapped, instead of butted together. Overlapping the seams creates a vertical ridge under the paper which is somewhat visible. You also have to have an adhesive that will stick to the acrylic coating on top of the paper.

There are some good aspects to overlapping seams. For one, this makes for a very strong bond. For another, it takes stress of drying and shrinking paper off the seam and distributes it across that 3/4″ of overlapped area. In this 80-year-old house, with it’s many layers of paint with a history of not sticking to each other, this is important, because it greatly reduces the chances of the tension on the seams causing the paint layers to come apart, which would cause gapping at the seams. See previous post.

Another positive feature about overlapping the seams, and how that worked with this particular pattern, is that, in this 1930 home, with its unlevel ceiling and floor and its greatly-out-of-plumb walls, I was able to manipulate the strips of wallpaper so that they looked straight and plumb – even though they were actually hung quite off-plumb.

This wallpaper pattern is by Lulie Wallace, and was bought on line.

Compensating for Crooked Walls

July 17, 2018

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Today I was to hang this cute bear wallpaper on one accent wall of a baby’s nursery.  The walls were 0ff-plumb, and the ceiling was not level, and the pattern was very plotted and symmetrical.  So let’s just say that the room presented challenges.

One thing that helped was the way the blocks of bears are printed on the wallpaper.  See Photo 1.  Unlike most wallpaper designs, the motifs did not cross the seams, so there were no elements to be matched from strip to strip.  This left me free to place the bears’ heads at the top of the wall with every strip.

Normally, when the ceiling is not level, the wallpaper pattern (the heads of the bears) would start to move up or down the ceiling, and that means that the heads would start to get chopped off horizontally.

But since this pattern did not cross the seams of the wallpaper and I didn’t have to match any parts of bears across the seams, I was able to pull each strip up to the top of the wall, and eating a uniform line (or head-count 🙂 ) at the top of the wall.  It meant that the lines of bears were not perfectly level from strip to strip – but that was not very noticeable, and was a whole lot better than seeing heads get chopped off.

The walls on either side were also not plumb.  As a test, I hung the first strip of paper butted into the corner, so it is parallel with the wall.  The second photo shows my laser level red line against the side of the paper.  If you could see above the top of the photo, that red line is butted against the edge of the paper at the top of the wall.  Yet as you move down the wall, the strip of wallpaper moves away to the left of the red level line.

I could pull the strip of paper into plumb so that it aligned with the red laser line – but that would cause a slew of bears to get their heads sliced off vertically where they hit the adjacent wall.  As well as when they got to the opposite wall.

Also, since the ceiling was not level, the bears’ heads would start marching either up or down the ceiling line, and, again, some bears would get their heads chopped off.

What to do?

I checked for plumb on both outer walls, and found that both walls were off-plumb by a fairly significant amount.  Luckily, both walls were out of plum parallel with one another.  This meant that I could hang the paper off-plumb and butted into the right corner, and it would come out on the left side of the wall nicely parallel to the opposite side (right corner).

So the pattern aligned nicely with both the right and left walls.  But since to do this I had to hang the paper off-plumb, it would also go off-level at the ceiling.  And since the ceiling was already no where near level, it was very likely that the pattern was going to track up or down that ceiling line, with a bunch o’ bears getting their heads cut off.

Here is where the placement of the pattern on the 20.5″ wide wallpaper made a difference… Because I didn’t have to match a bear’s head to a bear’s head horizontally across the seams. I could position each strip so that the tips of the bears’ ears were at the top of the wall.  (Read previous paragraphs.)

But because the ceiling was off-level by such a great degree, some of the pattern did get crooked, and so you see a couple of black feet starting to appear above the brown bear at the top of the wall (See photo 3).

But I’d rather have a few paws showing at the top of the ceiling, than have a bunch ‘o bears get chopped off vertically at the corners.  But still, I didn’t like looking at those paws hanging down from the ceiling.

The fix was easy.  I took some scrap wallpaper and from it I cut some thin strips of white paper that I then pasted over the offending paws.  Voilà!  No visible dangling paws.

AND the pattern looks amazingly equal in each corner,

This is a new townhouse in the Cottage Grove neighborhood of Houston.

Fudging the Kill Point to Fool the Eye

May 26, 2018


My two previous posts dealt with a wallpaper pattern of stacked blocks in a room with crooked, unplumb walls and an unlevel ceiling. Besides keeping the pattern level, and having all the horizontal lines match in all four corners (note my pencil guide-line near the top of the wall in the first photo), it was important to keep the blocks all the same size. Or at least make it look like they are all the same size.

A kill point is the last corner or join in a room – where the last strip meets up with the first strip. This almost always ends in a pattern mis-match. So you try to hide it in an un-obvious corner. This room, however, had no hidden corners, and no good place for the kill point.

So I decided to put it over the door. It took some work to keep those gold lines at the same height all the way around the room. The pencil line you see near the top of the first photo helped with that.

But I also wanted to keep the boxes all about the same width. The manufacturer had set the width at 21.” But as the design worked its way around the room, the final space (over the door) was going to end up at 24.5″ wide. I could make that last block 24.5″ wide, if I spliced in a bit of scrap paper. But that would throw off the pattern match a bit, and those 3.5 extra inches of width would be likely to catch the eye.

So I decided to “shrink” that last panel over the door instead, but by only about 1,” which would be less detectable to the eye.

To “shrink” the last panel to 20,” I would have to add some inches elsewhere. I decided to add it in the corners.

When you hang wallpaper around inside corners, you cut the paper in the corner, allowing 1/16″ or 1/8″ to wrap around the corner. Then the new strip of paper overlaps that thin wrapped area. Obviously, a small amount of the wallpaper pattern / design is lost in the process.

If I have plenty of paper, I can cut a new strip in such a way that the pattern will match pretty much perfectly. With a design like these blocks, I would measure what the width of each block was supposed to be (21″), and then cut the new piece so its width, when added with the width of the existing half-block, would work out to 21.”

I also have the option of making the new half of the block a little wider or narrower. I measured carefully around the room, and figured that if I “grew” the blocks in each of the four corners by about 1,” by the time the paper worked its way around to that final strip over the door, that 3.5″ gap would be gone, and I’d have an excess of about 3/4.” A difference in width of 3/4″ is much less noticeable than a strip that is overly wide by 3.5,” so I decided to go with that.

I spliced the two strips together at the point where they met, and then appliquéd on one portion of vertical gold line (which had been cut off during the splice).

The photograph’s angle distorts the size and shape of the blocks a bit, but, from a distance, they all look very much like they are the exact same width. Ditto for the blocks in the corner in the original post.

Getting A-head

January 26, 2018


I plotted the layout of this pattern to have the leopards’ heads be at the top of the wall, just under the crown molding. This worked nicely for the first three walls. But due to unplumb walls and a very unlevel ceiling, as the wallpaper strips moved from left to right across the four subsequent walls, these poor leopards got their heads got cut off.

I cut new intact heads from scrap wallpaper, and appliquéd them onto the cats’ chests. A little snipping and trimming was needed to get the various body parts to line up.

The leopards’ necks are a little shorter than when they started out. But that is much less disagreeable than half-heads. 🙂 From 9′ down on the floor, all the eye can see is that the animals’ heads are lined up perfectly under the crown molding.