Here I’ve rolled on my favorite wallpaper primer , Roman Pro 977 Ultra Prime . Since I’m going over flat water-based paint, I expected my primer to dry smoothly and quickly. So I was surprised when I looked back 30 minutes later and saw that some areas were wet and had actually thickened up a bit and pushed away from the wall. Here is looks like it’s actually sweating . This is most likely due to what is on the surface below – including below that surface. In other words, I think somewhere along the line, the wall was painted with semi-gloss paint. The gloss finish won’t allow moisture to pass through it, so the moisture stays on the surface longer. Possibly also, something in one or more of the base surfaces holds on to moisture , so that it is not allowed to dry and evaporate into the air . These principles would hold true even if another coat paint , even matt finish paint, was applied on top. I ended up bringing a fan in from my van and aiming some moving air onto that wall to speed dry time .
this vanity was originally white . To update the powder room and coordinate with the new wallpaper , the vanity cabinet was painted this rich green . When hanging wallpaper , some paste will get onto the woodwork or cabinetry . Usually, it’s a simple matter to wipe this paste off with a damp rag (we like microfiber cloths ).But as you can see, even gentle wiping with a damp cloth has taken some of the new paint with it. This is usually because the new paint was applied without having properly prepped the original surface. The original paint has a gloss / sheen , which makes it attractive , as well as resistant to dirt and stains . But new coatings (be they paint , latex paint , wallpaper paste , etc. ) won’t adhere tightly to a glossy surface . So it’s imperative that the original surface be prepped correctly , before the new paint is applied . This means de-glossing . Deglossing can be done by sanding the surface to scruff it up, which will give a bit of “tooth” to the surface for the new coating to stick to. Or you can buy a chemical de-glosser from a good paint store like Sherwin-Williams or big box store like Home Depot . This is simply wiped on with a cloth . You can also use what’s called a bonding primer , which is formulated to adhere to just about anything , and then provides a surface that paint or other coatings can grab a hold of and stick to . Once the original surface is properly de-glossed and primed and prepped , the new paint can be applied . Once that dries and cures , you can put stress on the surface, such as rubbing or wiping , without fear of the new paint peeling off . Another weird thing is that the green color came off on my microfiber rag . I’ve had this happen with water-based / water-borne paints – but not with the old-fashioned oil-based paints . Not a big deal. Not enough of the color wiped off to cause any lack of color on the painted surface of the vanity . install
This window had leak issues ( rain , sprinklers ) some years back, which have been solved by replacing the window, and doing other repairs. In the photo, I’ve applied my light blue wallpaper primer to the top half of the wall but not yet the bottom portion, so that’s why the color differenceEven though the leak has been stopped, vestiges of it are still appearing. Water that entered the wall left vertical streaks on the drywall . All these years later, after the paint and texture have been removed , the stains remain.Water stains , along with some others, such as blood , rust , ink , marker , grease , oil, cosmetics , and the like, will bleed through joint compound , primer , paint , and wallpaper , creating new stains on the surface . It may take a couple of months , but they will make an appearance . In this photo, I’ve already applied my blue primer. It only took a half an hour for these stains to work their way through. This is the top right corner of the window , where the bracket for the mini-blinds is attached to the wall. Note the stains on the underside of the window . To prevent these stains from working their way through the new coating / paint / wallpaper , it’s imperative to thoroughly cover them with a stain blocker . And – trust me – water-based products won’t work, despite what the label claims. You need an oil-based product like this KILZ Original , or a shellac-based like BIN by Zinsser . Both are prone to splatter , so be sure to cover your floor and baseboards with dropcloths . KILZ has strong fumes and can make you high , so ventilate or wear a respirator mask . It’s a hassle cleaning the liquid out of the brush , so I use a cheap-ish disposable “ chip brush ” from Home Depot or Sherwin-Williams . The products usually dry pretty quickly. Note that wallpaper paste won’t stick to most oil-based primers , and shellac is too glossy for good adhesion , so I’m going to go over the stain blocker with my usual Roman Pro 977 Ultra Prime wallpaper primer , which sticks to just about everything , and creates a good, matt finish surface for the wallpaper to cling to.
On the inner portions of these rolls of embossed vinyl faux grasscloth , but only on the outer edges , was this odd pink tint . It seems to be only in the center of the roll – closer to where it was wrapped around a rod, perhaps?It seems to be only on the outer edges .This is disconcerting, because there are substances that can bleed and stain wallpaper, and vinyl is especially prone. This shade of pink happens to be the same as mold , which will stain and grow … but it doesn’t fit the irregular growth pattern of mold. I’m hoping it’s something from the factory that that is harmless, like a water-based paint or pigment that got onto the rolling apparatus and transferred to the paper, or some other innocent anomaly . It didn’t appear to have infiltrated the vinyl surface of the material , so I went ahead and hung the paper . Let’s keep our fingers crossed that this substance remains inert , and the wallpaper looks pristine for years to come.
The wall has been skim-floated and sanded smooth , primed , and is ready for wallpaper .The homeowner did a great job coordinating the wall and ceiling paint with the colors in the wallpaper. This is a room that’s made for sleeping!At first I thought the pattern scale was too small for the large wall. But once I saw it on the wall, I really like the way it fills the space. To me, this pattern has a sort of calico look. Close-up shows the light texture on the paper. This is a non-woven material, so I’m installing via the paste the wall method . Here I’ve cut and arranged all my strips in the order in which they will be hung . This is a drop match pattern , which some folks think of as A and B strips. Meaning, for instance, an orange flower appears at the top of the wall on Strip A . But the next strip, Strip B, has a yellow flower at the top. When you get to the third strip, we are back to an A and an orange flower. Next comes another B strip – and so on. I’ve rolled the strips backward , with the top of the strip coming off first. This will prevent the printed face of the wallpaper from bumping into the pasted wall during installation . Wallpaper often shrinks a tad when the paste dries , and this can result in very minute gaps at the seams . With dark wallpapers , it’s pretty important to take steps to prevent white from showing at these gaps. Here I’ve measured out where each seam will fall, and taken diluted black paint to make a dark stripe under each seam . I don’t make the paint full-strength, because wallpaper paste isn’t formulated to adhere to paint. I want the wallpaper adhering to the primer I’ve applied. That’s also the reason why you don’t want to roll paint over the whole wall. Also, I have only striped some of the seam areas, and will wait until some strips are up on the wall before striping more lines. This is because wallpaper expands when it gets wet with paste, which can make it difficult to plot the exact width of each strip as you move across the wall. I use acrylic craft paint from the hobby store, applied with a bit of sponge. I keep a small dish of water to dip the sponge into, which dilutes the paint a bit. You also see a stick of chalk pastel . See next photo.Besides the wall peeking out from behind the wallpaper seams , it’s also possible / probable that the white edges of the wallpaper backing / substrate will show at the seams. I take a stick of chalk and run it along the edges, making sure to apply from the backside, to avoid getting chalk onto the surface of the wallpaper. Be sure to use chalk pastels and not oil pastels – oil will bleed and stain wallpaper. Some installers use liquid paint or markers – again, be sure to use water-based or acrylic , and never oil based or permanent markers . BN Walls is the brand. Altogether, this was a pretty nice product to work with. It was thin and very soft and flexible (many non-wovens are not).I wasn’t happy with all the seams, though. I believe the paper was cut with dull or wobbly wheels at the factory, because the edges seemed to not be perfectly straight . So I ended up with gaps and overlaps in some areas. Here you can see the wallpaper edges pouching up a bit due to excess paper. But, as I mentioned, this material was quite flexible, so it was pretty easy to spread these edges apart an use a tool to push them apart and then down to prevent them from pouching up again. Once the paste started to dry, these areas held nice and tight and flat. This is a townhome in the Rice Military neighborhood of central Houston .
Re my previous post , it’s very common for wallpaper to shrink just a tad when the paste dries, and this can leave you with teeny gaps at the seams. So when hanging a dark paper like this, I like to stripe a band of black paint under where the seams will fall. This way, if the paper does gap at the seams, you will see dark, and not the white wallpaper primer . I measure and plot where each seam will fall and then run a stripe of diluted water-based craft paint (from Michael’s or Texas Art Supply) under where the seam will be. I wet a scrap of sponge and dip it in the paint, adding water as needed. Don’t make it too thick or dark. Because you want the wallpaper adhering to the wallpaper primer underneath all this. On top of the wallpaper primer, the craft paint dries pretty quickly. But I use a heat gun to be sure the paint is good and dry before hanging each strip. Don’t paint more than one or two stripes at a time, because wallpaper stretches and expands when it gets wet with paste , and it’s difficult to predict exactly where each seam will fall. For the same reason, be sure your stripes are at least 1/2″ wide, if not a full inch. Additionally, I’ll take a pastel chalk (NOT an oil pastel – oil stains wallpaper) and run it from the backside along the white edges of the wallpaper, to prevent any white edges from showing at the seams. Do a Search here to see previous posts about that trick .
You’re looking at the junction between a wallpaper border at the top of a wall and the ceiling. You can see crackled and flaking paint on the ceiling.
This was almost surely caused by the previous wallpaper installer getting paste on the ceiling (which is typical and normal) but failing to wipe it off completely.
The paste is clear and difficult to see. Even when you do a diligent job, it’s easy to leave some residue behind.
The problem is that wallpaper paste attacks water-based paint, and will cause it to do what you see above … crackle, flake, chip off. This can happen if the paint was in place before the wallpaper paste got on it, or if there was paste residue and fresh paint was applied on top of it.
In fact, the decorative paint finish called “crackle finish” is accomplished by applying hide glue onto a surface and then coating it with latex paint.
The crackly paint on the ceiling is unattractive, and impedes adhesion. It takes a lot of scraping and sealing and skimming the wall to rectify this.
A way to avoid this is to astutely wipe off all paste residue. Better yet, what I do is to use special plastic tape at the top of my wallpaper strips, so that no paste gets onto the ceiling in the first place. Do a Search here to see previous posts describing that technique.
You can also use a stain blocker like KILZ Original oil-based primer, or BIN shellac-based primer, to seal off the area before painting. There are water-borne primers that claim to seal such problem areas – but I prefer to stick with oil or shellac.
No, this large room with sink and counters isn’t a kitchen. The family loves to entertain both family and friends, so included this “bonus” room in their new home’s plans. It’s used for both entertaining and crafting. The wall facing you was originally painted a semi-gloss navy blue. In the photo, I’ve applied my wallpaper primer. It will adhere to the glossy paint, and provide a matt finish for the wallpaper paste to grab ahold of. Taking measurements and plotting the layout. This paper has a selvedge edge , which has to be trimmed off by hand with a straightedge and razor blade. The manufacturer has not provided trim guide marks , so I am using a ruler and my eye. The new look is so dramatically different I couldn’t resist taking a photo mid-hang. As you can see, I’ve used dark paint to stripe under where the seams will fall, to prevent any of my primer from showing through at the seams. You can see the ceiling line starting to track upward on the right portion. More on that below. Finished. Perfectly centered.This is the mounting hardware for the big screen TV . I asked them to remove the TV, but we left the mounts in place. In order to support the heavy TV, they are placed quite securely into the wall , and I feel it’s best not to jimmy around with that. Rather than have the first strip straddle the TV mount, I plotted to have my first seam fall down the middle of the wall, placing a seam in the mid point of the mount. This meant I had to hang four strips instead of three, but it made it a whole lot easier to work around the TV mount, as well as to keep the left and right edges of the grasscloth straight and plumb. Close up showing the texture of this grasscloth material. It’s atypical to have grass cloth printed with a pattern , and I rather like the way the ink looks somewhat scratchy against the rough background. Because it’s Schumacher, you can expect printing defects . The slight pattern match doesn’t bother me, as there were many more places along each strip that matched up perfectly. Nor do I mind the different intensity of ink on the two strips. That’s all part of the look of grasscloth. But I wasn’t pleased with the white ink out in the middle of nowhere, as seen about 1//3 down the center of the picture. This isn’t considered a defect , and from a distance it’s not really noticeable. But it bugged me. So I used some water-based paint and a very small brush from the craft store and lightly touched up the spots. I also softened the mis-matched edges a bit. There’s a fine line between covering the white spots and staining the material, so use a light hand. And never permanent ink or oil-based markers or pastels.Likewise, the ceiling line was not level, so as I moved from the mid-point out to the right, the ceiling rose above the geometric motif’s top edge, and a white line began to be visible, but only to the right of the centerpoint. So I used the black paint to cover up that extra bit of white. This increases the width of that horizontal navy blue line from 1/4″ to about 1/2″. But from down on the floor you can’t tell, and it looks a whole lot better than having white on the right side and none on the left. The brand is Schumacher and the home is in the Garden Oaks / Oak Forest area of Houston. The interior designer who came up with this bold and lively look is Clayton Brooks .
Dark papers are popular right now. But since wallpaper shrinks a tad when it dries, and since it’s usually printed on a white substrate, it’s possible that hairs’-breadth gaps of white wall may show at the seams. One way to prevent that is to stripe the wall under where the seams will fall with a color similar to the background of the wallpaper. Be careful to not get it too dark, as too much pigment may interfere with the wallpaper primer’s ability to perform optimally. I measured the width of the strips, and then used a laser level to guide my stripes. I use craft paint from the hobby store, and daub it on with a scrap of sponge (right) and dip into a bit of water, which I keep in a Gatorade bottlecap (left). To get rid of the white edges of the substrate, I use a bit of chalk (some folks use paint – but make sure it’s water-based …. NEVER use oil-based paint, markers, or chalks, as they will bleed onto the surface of the wallpaper). I run the chalk along the edge of the wallpaper strip, making sure to work from the back side, to prevent the chalk from working its way onto the surface of the wallpaper. Use a light touch, but cover all of the white edge. Finished wall. Don’t see no stinkin’ white gaps! 🙂 The mural pictured is by RebelWalls.com
The powder room in this 1990’s home in the Houston Heights is being updated, and that means replacing the wall-to-wall vanity. Here the vanity has been ripped out. The areas where the backsplash was adhered to the wall have pulled the top surface of the drywall off. In addition, the plumber had to cut out a section of drywall in order to gain access to the pipes, so he can install the new faucet and handles. You can see the connections roughed in. You can’t hang wallpaper over this mess. First of all, it way too uneven – all those bumps will show under the new wallpaper. And the outline of the ” trapdoor ” will leave a big square ridge under the paper. Thankfully, the plumber secured the panel with drywall screws – most plumbers just leave you with a chunk of drywall floating in space, or even just an empty hole. Back to patching issues … in addition, the torn areas of drywall will absorb moisture from the wallpaper primer and / or paste and expand, creating bubbles that will show under the new paper. I needed to fill in dips and gouges, even out high areas, and prevent bubbling drywall. Gardz by Zinsser to the rescue! This is a penetrating sealer that soaks into porous surfaces and then dries hard, binding them together and creating a stable surface, as well as resisting moisture from water-based top coatings. This picture doesn’t look much different, but here the torn drywall is a little darker, indicating that the Gardz has soaked in and dried. The surface is now ready for a skim-coat. But first, the trap door needs to be addressed. I covered the cut areas with four strips of self-adhesive mesh drywall tape (no photo). Then I went over everything (wall to wall) with joint compound (commonly referred to as mud ) (no photo). Because of the thickness of the high and low areas, this had to be a thick coat of smoothing compound, and would take a long time to dry. So I went to the jobsite two days ahead of our install date, to do these initial repairs. And – no – you can’t use quick set or hot mud or 5 or 20 minute mud to do these repairs. These products are intended for repairs of small areas. Top coatings like primers, paint, and wallpaper paste do not stick well to them. Don’t let a contractor sweet-talk you into letting him use any of these to smooth a large area of wall.Here is the wall after my first, heavy, coat of smoothing compound. I use Sheetrock brand’s Plus 3.The bubbles you see just left of center show that Gardz didn’t 100% do its job of sealing out moisture, as a little expansion and blistering has occurred. Not a biggie. These will disappear when the surface is sanded. There is usually not a problem with these re-appearing.When I got to work two days later, the smoothing compound had dried. I sanded pretty smooth. Then vacuumed up the dust on the floor, and then used a damp sponge to wipe residual dust off the wall. This is important, because no coating will stick to dust. The wall still wasn’t perfectly smooth, so I did another skim-coat. This was much thinner, so didn’t need a lot of time to dry. I used a fan and my heat gun to speed things along. Once that was dry, I sanded it smooth, vacuumed and then wiped off all dust. Then rolled on my favorite wallpaper primer Roman Pro 977 Ultra Prime. I have the paint store (Murphy Brothers in central Houston) add a little blue tint, so I can see it when I apply it to the wall. What a transformation! Now this wall is ready for wallpaper!
The Wallpaper Lady's Blog 