Time For A New Brush

An angled trim brush like this helps apply my wallpaper primer in tight areas the roller won’t reach , such as along crown molding and baseboards , and in corners.  This is called cutting in .  These brushes with the stubby handles are kinda new, and I’m liking them a lot. 

Kill Point Over Door

aaHere’s what this flowing viny wallpaper pattern looks like in this dining room in the Garden Oaks / Oak Forest neighborhood of Houston . The bottom 1/3 of the wall is block paneling / wainscoting , so the wallpaper on just the area above is not overwhelming .
A kill point is the place in a room where your last strip of wallpaper meets up with the first strip you hung . this virtually always results in a pattern mis-match . So we try to hide that in an inconspicuous place, such as in a corner behind a door .
In this room, all of the corners are very visible . A mismatched corner of 7′ high would be very noticeable .

So in this room, I was able to cleverly disguise the mis-match in a much shorter area, over a door . This is only 6″ high . Here my first strip is on the left, and my last strip is on the right, with two short strips needed to bridge that gap .

Here the strip on the right has been put into place.

Here’s the piece that will butt up against the strip on the left. Eeek! It’s 1/2″ too narrow to cover the gap. Also, as you can see, there is an obvious pattern mis-match at that seam on the right.

look at this tree branch . I’m going to use that to my advantage.

Here I’ve taken another piece and have matched the pattern on the right side. Note that it’s not matching on th left.

Here I am, back to that strip we saw a few photos ago, that will match with the strip on the left. Remember tha tree branch I pointed out? Here I’ve trimmed the wallpaper vertically along that tree branch .

Here I’m putting it into place, butting it up against the strip on the left, and overlapping the strip on the right. But that’s going to leave a vertical ridge under this strip, where the strip underneath it ends on the left.

But you won’t notice that overlap if it runs under a design motif . Here I’m using a pencil to trace the outline of that tree branch, bringing it in so that the tree branch will overlap just 1/8″ – 1/4″ over the strip on the right.
Note that since the surface of this paper is vinyl , and wallpaper paste doesn’t always adhere well to slick plastic , I’ve used a special border paste or vinyl over vinyl or seam repair adhesive just on this small 1/8″ overlapped area .

Strip on the right trimmed to conform to the curves of the tree branch.

Tree branch piece being put into place.

Tree branch strip trimmed and finished.

SDone and viewed from below. OK, so the pattern doesn’t match 100% perfectly the way the designer intended. Some of the motifs are closer together than they “should” be. From here, who the heck is going to notice?! This looks pretty darned good – and it looks way better than having a 7′ long mis-match in a very visible corner .

The pattern is called Twining and is by Graham & Brown . It has a very light texture , and also a slight
metallic sheen on the branches . It’s a non-woven / paste the wall material , and will strip off the wall easily and in one piece when it’s time to redecorate . I like their papers a lot .
You can purchase G&B from Dorota at the Sherwin-Williams in the Rice Village . Call first, as hours vary. (713) 529-6515 .
Here’s another cool thing … Go back to that first photo. Since I started hanging paper by centering the pattern between the two windows on the wall to the right (not visible in the photo), by the time I worked my way around to the wall between the windows you see in front of you, the pattern was not going to be centered in between the windows. I thought it would look better if it was balanced symmetrically. So I positioned the dominant part of the tree branches in between the windows. And then I used the same overlap-and-disguise trick over the window on the right.

Think It’s Time For A New Brush?

Here’s the brush I’ve been using for cutting in my wallpaper primer around corners and moldings. It’s called a ” Short Cut .”
I love the little stubby handle. But not the stubby bristles! Nor the residue accumulated near the base and within the bristles, which makes the brush stiff.
Even though I clean it thoroughly after each use, residue builds up. Me needs me a new one!

Here’s the same brush, but this is the one I use for cutting in paste on paste-the-wall wallpapers.
Paste washes out better than primer, so this brush looks nearly new, even after more than a year of use.
I’d like another one of these, please!

My Short Cuts were from Home Depot. I love Home Depot – but Sherwin-Williams is more convenient. Plus, this week they’re having a 35% off sale for contractors. Can’t beat that!
My local S-W didn’t have the style I’m so fond of, so I went with this version by the same manufacturer ( Purdy ). It’s similar but has a slightly longer handle.
I thought I wasn’t going to like it much, but I used it today and turns out I barely noticed a difference!

Subtle Colors , Gentle Movement in Dining Room

Kinda bland, huh?

Well, let me fix that for you!
With just two colors and a simple, yet flowing design, this wallpaper pattern breathes life into this room – but doesn’t overwhelm.
Pattern is nicely centered between the windows.

This is another wall that also has two windows . I was able to center the pattern between these windows, too. Centering on two different walls in the same room is actually something of a feat – but that’s a story for another time.

From a distance .

This home has bull-nosed / rounded outside corners and edges, as well as the arch . Very tricky to get wallpaper trimmed to these areas neatly and evenly . See other posts for more info on this.

Close up. The design has a weathered fabric texture sort of background . The copper colored foliage is lightly metallic , so has a slight shine – but only when viewed from certain angles , so it’s a subdued luster that’s added to the room .
Note how the coppery color coordinates with the light fixtures / chandeliers .

The wallpaper is by Graham & Brown , a good manufacturer with quality papers. The pattern is called Twining . This company makes nice non-woven papers , which have a polyester content which makes them stain-resistant and durable . They are also designed to strip off the wall easily and in one piece and with no damage to your walls when it’s time to redecorate . G&B ‘s materials are usually flexible and nice to work with – although this particular one did tend to drag and tear when being trimmed – even with a new blade. I usually paste the paper , but non-woven materials can also be installed by paste the wall .
The home is in the Oak Forest / Garden Oaks / Heights neighborhood of Houston .
This project took me three days, to smooth the textured walls , and then hang the paper around four walls , and trim around those pesky rounded edges and the arch .

Spray Can Texture

I’m getting ready to skim-float this accent wall in a master bedroom , to smooth the textured wall .  The texture on the wall looks a little odd to me.  Also, it is more concentrated in the center of the wall , and less so as you get close to corners and window moldings .
This is leading me to think that this texture didn’t come with the house .  When homes are built and texture is wanted, the painters or drywall guys come in with spray equipment and shoot the joint compound onto the wall.  This gives a pretty uniform coverage , and also coats every surface, up into corners and molding.
Not sure, but I think this one I’m working with might be the after-market kind that you can buy in a spray can from Home Depot .  It does seem pretty uniform, too.  
You can do a search here to read more about the skim-floating / skim-coating process , and smoothing textured walls , to provide a smooth and attractive surface for the new wallpaper . 

What’s A “Fat Cut” ?

Here, I’m hanging paper from right to left, and have just come around a corner , which is in the center of the picture. You almost never wrap wallpaper around an inside corner . Corners are never straight , and the paper will buckle in the corner . And the edge will not be straight , nor plumb , and thus the next strip won’t butt up perfectly against it . And it’s also probable that the strip will torque off either up or down, causing your pattern to creep up or down the ceiling and floor lines.
The answer is to stop the strip of wallpaper in the corner , and cut a new piece for the subsequent wall.
But you can’t just trim tightly to the corner. Because most likely there will be gaps (remember I said that corners are never straight?), so some of the wall will show.
So what you do is wrap the paper just a teeny amount around the corner , and then overlap your new piece over that. This does mean that you will lose some of the pattern in that overlap.
I can’t stand that pattern mis-match, so most of the time, the way I do it, I’ll take a fresh strip of wallpaper for the next strip (to be placed on the left in the photo) and trim it so the pattern matches as perfectly as possible. But I’m getting ahead of myself. Back to the fat cut …
In the photo, I’ve cut my strip on the left 1/2″ wider than needed to fit this wall. I don’t want this 1/2″ of wallpaper under my overlapped new strip, because the leaves a visible ridge. But you do want a little underlap, because you need that to prevent a gap from showing in the corner.
So in the photo, I’ve trimmed off most of that 1/2″ and trimmed it down to an unnoticeable 1/8″. How on earth can you get a trim that thin and that consistent?!

I use this handy metal plate with a rolled edge (on the left).

This plate has bends and other edges of other thicknesses , rounded edges , won’t leave marks on wallpaper, so it has many uses.

Here’s a close up of the trim guide edge that allows for that 1/8″ fat cut .

Back side of the plate. (Don’t mind the blue tape – it’s just there temporarily.)

This edge is a little thinner , and would cut too close for use in a corner. But it does have a use if you need a trim in an area where you don’t want the paper trimmed tightly into the edge / corner.

You’re looking at where wallpaper meets crown molding. This join edge has gaps between the molding and the wall in some areas, and other areas have gunk and uneven areas. Trimming with my usual trim guide would cut too close and let some of these icky things show. So here I’ve used the thicker trim guide. As you can see, it allows the wallpaper to wrap ever so teeny much of a bit, so it covers the bad area, but doesn’t creep onto the molding.

Here’s another example, along door molding. At the top, I used my usual thin trim guide (see below). But this allowed a bit of a gap to show, due to decades’ build up of paint , caulk , dirt , etc.
So, midway, I switched to using the steel plate as a trim guide. This made the cut just fat enough that the wallpaper wrapped a hair and covered the icky area.

Here’s my usual trim guide . I’m guessing it’s about 9″-12″ long .

You can see that the edge is very thin . In most cases, this is ideal, because it allows for good, tight trims right smack into corners and edges.
That steel plate shown above was invented by a colleague in the Wallcovering Installers Association ( WIA ) . They are all the same length, but they come with three different degrees of angles , and can be used for lots of wallpaper installation tasks .
The colleagues has them manufactured and then sells them to us paperhangers . She sells other cool tools , too. If you’re interested in purchasing any of these , or seeing what else she has, go here https://www.facebook.com/customwallpapertools or here https://www.wallpapertoolstore.com/?fbclid=IwAR2NFrG2gWSzNClNMB0gHDiQHbnkhyNhthaOFQaK8MCaU7rBYVQhYQkO0nc
Her name is Eunice , so we call them EuniTools .

From Dark and Dated to Light and Livable

Oh, my! – I hung lots of these chintz florals, ” satin ” look (the design of the dark green at the bottom of the wall), and dark colors back in the ’90’s . Sure enough – this home was built and wallpapered in 1994.
IIt’s still a good look, IMO, and the homeowner still likes it. But she’s just gotten tired of it. So – time for an update !
She also decided to eliminate the chair rail , so the new wallpaper will go ceiling to floor . Here you see some damage to the drywall where the chair rail molding was removed .

What a change! Now the room’s look is quiet and fresh .
The buffet , topped with a decorative mirror , will go on this wall . That’s why I centered the pattern in between the windows , so it will fall evenly on either side of the furnishings .
I also plotted so that a full “Moroccan lantern” (that’s what this style of trellis pattern is called), would balance out between the crown molding and the window molding. There were several of these 12.5″ high areas all around the room, so this placement of whole “lantern” motifs gave the room a pleasing look.
It also worked out that the lanterns were evenly placed and kept whole between the crown molding and the baseboard. See the second following photo to see what I’m talking about
As a note – just this one window wall took me about five hours to measure , calculate , and hang . Getting the pattern to go over, around, and under the two windows , and still line up and match correctly , took some time and futzing. The material was thick and stiff , and a bit tricky to fit into corners and trim around the decorative window molding .
In the foreground you see my work table area . The homeowner has let me put protective padding on her dining room table and then set my work table on that. This saves space and allows plenty of room for my ladder and other tools as I work around all four walls.

So that I could center the pattern on this wall , I had to start hanging my first strip in the middle of the wall. I was lucky this time, that the pattern was centered exactly on the edge of the wallpaper roll . Sometimes (as in the one I did yesterday – see previous post ) the center of the design motif is a to the right or left of the edge of the wallpaper . This, naturally, means you’ve got to do more measuring and plotting and double-checking , to be sure the center of the design falls down the center of the wall .
Back to the photo above … that dark block on the right side of my work table is my laser level. It’s shooting a perfectly plumb red line onto the wall. Here I’m lining up my first strip of paper butted against this red line .
Switch topics … Back in 1994, the original installer did a very nice job of hanging the wallpaper. But … he didn’t prime the new drywall first. That lack of primer / protective layer means that the wallpaper will actually bond to the drywall. I tried, but was unable to get the existing wallpaper off . Eventually, you need to factor in time , damage to the wall , paste residue left on the wall, and take a different tac if called for.
So I skim-floated over the seams , so they wouldn’t show under the new paper , and also floated over the damaged drywall where the chair rail had been removed . Sanded smooth , and then primed the patched areas as well as the original wallpaper, with Roman Ultra Prime Pro 977 . This stuff will adhere to the light acrylic (slick) surface of the original wallpaper, as well as protect it from moisture from my paste on the new wallpaper. ( Moisture could cause the underlying original wallpaper to expand , creating bubbles that will look bad, or loose areas that will pull away from the wall, creating a bubble or pocket.)
My primer is also lightly pigmented, so it helps block out the dark color and busy pattern of the original wallpaper . This particular new wallpaper is quite opaque , but not all of them are, so a pigmented primer is important , IMO .

Left corner of the buffet wall. Here you can see how the lantern motifs are placed between ceiling and floor.

The background has a lightly mottled effect, that mimics grasscloth a bit, and also adds more depth and warmth than just a plain solid color .

Been havin’ more than a fair share of defects lately, especially this week. This paper had on both front and back sides, incidences of these black flecks . They seemed to be maybe charcoal , so I wasn’t too worried about their black bleeding through to the surface , like ink or any oil-based substance will do.
Most of them were embedded in the material itself, so could not be wiped off , nor dug out with a razor blade . Some I had to cut around and discard the affected paper. Others were so small as to not be noticeable once the paper was up on the wall and all the furniture and artwork was back in the room.
There was also one 3′ section of wallpaper that had an odd streak or arc running across it. It wasn’t ink . It was more like some kind of compromise to the substrate . I noticed it was I was pasting the back of the paper . I turned it over and, sure enough, you could see it a little on the surface. (see photo in previous post) It’s the kind of thing that was subtle, but would catch your eye when looking at the wall from a distance . It was minor , but I discarded that strip . Good thing I have the homeowners purchase a little extra wallpaper .

The manufacturer is Designer Wallcoverings , which is a good quality brand (aside from the printing defects I described earlier ). It was a non-woven / paste the wall material , which is pretty user-friendly . It will strip off the wall easily and in one piece when you redecorate . Stain-resistant , and ” breathable ” in humid conditions .
The home is in the West University neighborhood of Houston . Dining room installer

Ceiling is NOwhere NEAR Level

We wallpaper hangers / installers like to have a nice straight ceiling line . Meaning, that the same pattern motif will show up at the same height on the wall on every strip . For instance, the top of the sailboat will touch the bottom of the crown molding all the way around the room.
But in old houses, poorly-built houses, or just plain old wonky houses (which are most homes in Houston! ), you can’t count on ceilings and floors being level , nor on walls being perfectly plumb .
When I used my level to check the ceiling in this 1926 home in the Woodland Heights neighborhood , I admit – I laughed out loud!
When a surface is level, the air bubble will be in the middle of the two black lines . It’s common for the bubble to be a little “off.” But this one isn’t even trying to be in the middle. Meaning – the ceiling is nowhere near level. The ceiling line is moving up and / or down as it moves across the room. The discrepancy can be as much as an inch or even more from one end of the room to the other.
Meaning, there is no way that that sailboat is going to be just below the ceiling on every strip.
Luckily, this particular wallpaper pattern was such that you aren’t going to notice much.
The other thing is, most people who live in older homes, or homes with shifting foundations , or even new homes , understand that walls and floors rearrange themselves over time . So they’re understanding if sailboats drift down the ceiling line , or if patterns don’t match absolutely perfectly in the corners.

Artemis Block – Inverted Twin of Yesterday’s Install Post

Half bath sink room primed and read for wallpaper . I have plotted where the seams will fall and striped with dark paint , to prevent the light colored primer from showing in case the seams gap a bit.

Artemis is available as a floor-to-ceiling pattern. So this partial coverage option is an innovative and fun variation on a theme .

This is the same pattern Artemis Climbing Walls as yesterday, but reversed , so the flowers go from bottom upward .

The ceilings are pretty high. The empty 5 gallon bucket is there on the counter (with non-slip cushioning beneath it) as an un-OSHA approved footrest , so I can safely reach the top corners .

Artemis is a very popular wallpaper pattern , especially in this dark / black colorway .

Manufacturer is House of Hackney .

This install was on four walls in a powder room , instead of a single accent wall. Since this comes as a 4-panel mural instead of traditional rolled goods, the layout was a little more tricky . I cut out the little mock-ups from the instruction insert, and marked them as to roughly where each panel was separated .
This is a non-woven material, and can be hung by the paste the wall method, as I did yesterday in the dining room. But today, in the small and chopped up powder room , I opted to paste the paper instead.
You will note that this pattern continues uninterrupted from one mural to the next. If you have a wide space to cover and will need more than one mural , this continuation of the design is imperative. Not all do, so check and be extra sure, before you order.
Speaking of ordering material … remember that for murals, you MUST add 2″ to EACH side – in other words, a total of FOUR INCHES to BOTH WIDTH and HEIGHT . This will accommodate trimming at floor and ceiling , and also will allow for wonky or off-plumb / level surfaces .
Better yet, have your wallpaper installer calculate for you.
Houston

Grasscloth Engineering and Logistics – Technical Details Post

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.