


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 .

You are looking at seams in a bathroom that are curling and opening up. This is due to a combination of things.
1, Probably the walls were not prepped properly. Wallpaper should be hung over smooth walls primed with a product designed to be used under wallpaper. Not paint primer and not bare Sheetrock and not glossy paint overspray around the woodwork.
2, Humidity is the great enemy of wallpaper. Especially in a small enclosed bathroom with poor ventilation. If your home has this environment, make sure to run the exhaust fan while showering, and leave the bathroom door open for ventilation, so the humid air can circulate out and fresh, dry air can venture in.
3, Manufacturers tout solid vinyl wallpaper as ” bathroom ” paper because splashed water will run off it. But this is misleading. What’s also going to happen is that humidity will find its way in between the wallpaper seams and then into the gritty manila-type paper backing. Once that backing absorbs moisture, it will expand. When that happens, it will push away from the surface, creating the curled seams you see here.
Taking it a step further, often this paper backing will actually delaminate from the decorative vinyl layer.
Tjhis is not a ” loose seam ” and cannot be glued back down. Your bet bet is to strip off all the wallpaper, properly prep the walls, and hang new paper.
Stay away from the low-end pre-pasted, paper-backed, solid-vinyl papers. A better option would be a thin acrylic-coated paper (not vinyl) or one of the newish non-woven (part polyester) papers.
DFor more information and details, read my page on the right https://wallpaperlady.wordpress.com/stay-away-from-pre-pasted-paper-backed-solid-vinyl-wallpapers/
Sometimes, even I can’t tell by looking at walls when someone has painted over existing wallpaper. But when you remove the switch plate covers and find this – it’s a sure bet!
Painting over wallpaper is a bad idea for many reasons. Click the link to my page on the right.
It may take some time, but almost always it’s possible to get that paper off the wall.
But sometimes, it’s unavoidable, as in cases where the previous installer hung on top of new drywall and didn’t use a primer to seal off the drywall.
In cases when the paper cannot be removed, if the surface is sealed and prepped correctly, it would be OK to paint or even hang wallpaper on top.
Obviously, the factory’s printer or its trimming rollers got off-kilter, creating this pattern mis-match at the seams.
It might have been possible to use a straightedge and razor blade to trim off 1/16″ from one edge. But since the mis-match ran off at a diagonal and was inconsistent throughout the bolt, that would have been extremely difficult and time consuming.
We sent the paper back, and requested new paper from a different run. When the paper arrives, I will visit the clients’ home before the install date to check the paper to be sure the pattern matches correctly.
What a disappointment! The walls are all prepped, the homeowners have dismantled the powder room, and were anticipating a beautiful, fresh new look by the weekend. 😦
S&L is one of my favorite companies, so this is doesn’t make me happy. But it appears that the company is quick to rectify problems with minimal hassle. New paper, from a different run, is already on its way!
ADENDUM: The new paper – from a different run – did arrive. I checked it, and it also had the same printing defects, although not as severe. Very disappointing. Interestingly enough, I have another client using this same pattern but in a different color just yesterday (March 17th). Her paper had NONE of these defects. It’s hard to understand what the colorway has to do with printing problems… But I guess that is a factory issue. See my post of March 20, 2021 to see how this finally turned out.
The large medallion on soft lavender on all walls of this large bedroom worked well for this gal for many years – but now that she’s an older teen, it was time for an update.
So instead of putting wallpaper up, today I took it down.
Most people think that stripping wallpaper is difficult. But if the walls were prepped properly, and if the paper was hung properly, and if the proper removal steps are followed, it should all go well, with minimal damage to the walls. See my link at right, on how to strip wallpaper.
The most important thing is to separate the top, inked layer of paper from the backing / substrate layer. I find that wetting this top layer with a sponge and plain water helps strengthen the fibers, so the top layer can be pulled off in larger strips.
In the second and third photos, you see how the purple layer has been stripped off, leaving the white backing attached to the wall. This top layer has to be removed, because it has an acrylic (or vinyl) coating, and will not allow water to pass through it.
The next step is to soak the backing with plain water and a sponge (see photo). No chemicals, no additives – just plain warm water. You will have to reapply water several times. The idea is to let water soak through this backing layer, to reactivate the paste underneath. Once that paste is good and wet, it should release from the wall. Sometimes you have to gently scrape the backing from the wall. But in my case today, once that paste was reactivated, the substrate layer came away from the wall in full, intact sheets. Easy peasy!
One photo shows my “dull” 3″ stiff putty knife. I call it “dull,” because it’s old and beaten up. But it’s really rather sharp. I use it to carefully get between the inked top layer of wallpaper and the bottom substrate layer. And then I use it to gently scrape wallpaper from the wall.
In my case today, the previous installer had done a superb job of hanging the wallpaper. He applied a primer before hanging the paper. That primer helped make this whole removal job go well, and it protected the walls from damage.
The family will need to apply a stain blocker to prevent any residual paste from causing the new paint from crackling or flaking off. Once that’s dry, the walls can be textured and / or painted. The room’s resident told me that she is planning to go all white.
This home is in the West University area of Houston.
The original paint in both these photos was a gloss or semi-gloss. When it came time to update, someone applied a coat of new paint right on top. Then the floor guys came and stained the floor. To protect the new paint, they applied painter’s tape. Unfortunately, when the tape was removed, it took some of the new paint along with it.
Believe it or not, even something as relatively gentle as wiping wallpaper paste off the woodwork is enough to cause poorly-adhered paint to delaminate.
This happens because the new coat of paint was not given a sound surface to grab ahold of and adhere to.
To have properly prepared the original gloss paint to accept the new coat of white paint, the painter should have done one or more of the below:
1.) Sanded the paint to knock off the gloss. This leaves dust residue, so that dust will need to be wiped off with a damp rag or sponge (rinsed clean frequently) or a Tack Cloth.
2.) Wiped down with liquid chemical deglosser, such as Liquid Sandpaper.
3.) Primed with a bonding primer, formulated to stick to glossy surfaces, and also formulated to serve as an appropriate base for the new paint.
A primer is also not a bad idea to follow up in the case of 1.) and 2.) above.
Yes, all of this is a whole lot of work, and it creates dust and/or odors, takes more time, and adds cost.
But it’s a step well worth the investment, because properly prepped and painted surfaces will hold up and look professional for decades to come.
The kids are grown and gone, so it’s time for an update to this bathroom. The original black & white floral wasn’t bad, but perhaps a bit outdated. And most of the seams had succumbed the curling and pouching that happens when you use the lower-end pre-pasted paper-backed solid vinyl wallpapers in humid rooms – like two teenaged girls showering. 🙂 Besides all that, Mom wanted a fresh new look for her empty nest.
I stripped the paper and prepped the walls – both of which took a lot more work than expected, and way more detail than you want to read here. The install also took a long time … Let’s just say it was way after dark when I finished and went home.
The room had its share of complicated elements. But also working with a geometric print requires a lot of extra steps, to keep the design elements plumb and aligned with the ceiling and woodwork (which are not necessarily plumb), and to keep the pattern matched up as it turns corners – most of which are wonky.
Also, it took a certain amount of plotting and measuring to have the pattern look uninterrupted as it played out above and then below the chair rail.
This paper is in the SureStrip line by York, and is one of my favorites to work with. It is a thin non-woven material, and is designed to strip off the wall easily and with minimal damage to the walls when it’s time to redecorate. It’s pre-pasted, which means that there is a thin layer of dry adhesive on the back, that is activated by water – you can use several methods to do this. SureStrip is always a nice, cooperative paper to hang, and on the wall, it performs well over time.