Will this need undercoat or primer or something?

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Will this need undercoat or primer or something?

Post by Asian Boss »

I've stripped the wallpaper in my office so I can paint it.

One panel in the middle looks different to the others, like more of a top layer has come off during the wall paper removal.

Do you know if that means it will need undercoating or priming before I paint it?

I did the bottom stairs the other day and they all came out like the panels to each side in the image, and they painted straight to top coat fine.
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Re: Will this need undercoat or primer or something?

Post by Felix »

Just looks like the lining paper came away with your old wall paper. But a roll of lining paper and stick a sheet back up before painting.
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Re: Will this need undercoat or primer or something?

Post by slowsider »

Never mind that, what colour are you going for?
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Re: Will this need undercoat or primer or something?

Post by KungFooBob »

Just paper that one wall with some funky NYC traffic paper and paint the other walls. Feature walls are so hot right now.
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Re: Will this need undercoat or primer or something?

Post by Asian Boss »

Felix wrote: Fri Dec 17, 2021 1:33 am Just looks like the lining paper came away with your old wall paper. But a roll of lining paper and stick a sheet back up before painting.
I'd never heard of lining paper but I've Googled and that does sound like the thing to do.

It also sounds slightly hard to do for a numpty like me. I've never put up wall paper. Could I give it a light sand and then do an undercoat? Or primer and undercoat?
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Re: Will this need undercoat or primer or something?

Post by Asian Boss »

slowsider wrote: Fri Dec 17, 2021 7:55 am Never mind that, what colour are you going for?
Light grey. Expcet I bought Farrow and Ball and they have 80 shades of light grey so it's called Mole Farts or something.
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Re: Will this need undercoat or primer or something?

Post by Asian Boss »

KungFooBob wrote: Fri Dec 17, 2021 8:32 am Just paper that one wall with some funky NYC traffic paper and paint the other walls. Feature walls are so hot right now.
That's what it was - and what I'm trying to move away from.
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Re: Will this need undercoat or primer or something?

Post by DefTrap »

Asian Boss wrote: Fri Dec 17, 2021 11:36 am It also sounds slightly hard to do for a numpty like me. I've never put up wall paper. Could I give it a light sand and then do an undercoat? Or primer and undercoat?
Wallpappering is pretty easy. Fairly basic tools - brush, scissors, cutter, edge roller. A papering table makes it easier for cutting (and pasting glue if you're doing it that way)
You can get textured stuff which covers a multitude of sins (lumps and bumps). I've used some glassfibfre stuff in my auld house in some places where the walls are -really- bad. Painted as normal afterwards.
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Re: Will this need undercoat or primer or something?

Post by Skub »

You have the option to hang lining paper horizontally to avoid the edges of the lining paper and the finished wallpaper coinciding. Generally the lining paper comes a lot broader than other wallpaper to help with this. Lining paper can be an awkward bastard to work with when loaded up with paste,but great for masking slight surface irregularities.
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Re: Will this need undercoat or primer or something?

Post by Asian Boss »

Thank you both.

I really don't want to use lining paper as I think I'll fuck it up.

I think I'll have a go at sanding then primer and undercoat. Or even just go straight to topcoat. There were some smaller areas like than on the stairs which I just did and two coats of topcoat did the job perfectly.
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Re: Will this need undercoat or primer or something?

Post by DefTrap »

Asian Boss wrote: Fri Dec 17, 2021 12:37 pm I really don't want to use lining paper as I think I'll fuck it up.
I thought so too - I'd been avoiding it because I literally haven't done any for 20 years. But pissing about with meticulous filling and sanding had begun to hack me right off.
Wallpapering with unpatterned paper is pretty straightforward, there's no pattern matching to be dealing with and yes it tends to come in wider rolls so coverage is quicker. I only intended to do a few walls but it was so easy I did the whole room in the end and I intend to do a few more now.

But yeah I can totally understand you might want to avoid it.
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Re: Will this need undercoat or primer or something?

Post by Mussels »

Asian Boss wrote: Fri Dec 17, 2021 12:37 pm Thank you both.

I really don't want to use lining paper as I think I'll fuck it up.

I think I'll have a go at sanding then primer and undercoat. Or even just go straight to topcoat. There were some smaller areas like than on the stairs which I just did and two coats of topcoat did the job perfectly.
If you can find it the right width it should be pretty easily apart from buying all the crap you need to put up just one bit of paper. If you need to buy all the stuff or cut paper vertically then I think I'd just paint it and put up with the lines left on the wall.
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Re: Will this need undercoat or primer or something?

Post by Pirahna »

Assuming this is a serious thread, you've pulled off the top layer of wallpaper, you need to get the rest off so it all looks like the bit with nothing on it. You'll need some water, a wide brush and a wallpaper scraper. Brush the water onto the remaining paper, then brush on some more, then some more, then use the scraper to remove the paper. If it's not coming off, brush on more water. You'll get the hang of it.

When it's all off, make sure the wall is smooth. Every blemish will show through on the painted surface. Once this is done, of out were me, I'd give it two or three coats of PVA (read the instructions on the can). Once all the prep is done then apply your chosen paint for a smooth, blemish free, long lasting look.
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Re: Will this need undercoat or primer or something?

Post by Mussels »

That's certainly an option that didn't cross my mind, I assumed it was lining paper used to cover up some rubbish plaster.
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Re: Will this need undercoat or primer or something?

Post by Asian Boss »

It's a serious thread.

My instinct is it's part of the panels, not part of the wallpaper.

I just took the wallpaper of the stairs and it was the same but without the bad panel. And it painted fine.

I bought a pot of Crown Primer / Undercoat. I'll give it a quick sand and then some of that.

I thought the Farrow & Ball paint was expensive but the Crown was £20 for a little 750ml pot. Bloody Crown goons had my pants right down there. I should get into the paint game rather than the turning-up-the-home-counties-accent-and-threatening-to-have-people-thrown-out-of-their-cottages line I'm currently engaged in.
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Re: Will this need undercoat or primer or something?

Post by slowsider »

Do you need primer/undercoat for emulsion?
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Re: Will this need undercoat or primer or something?

Post by DefTrap »

slowsider wrote: Fri Dec 17, 2021 6:41 pm Do you need primer/undercoat for emulsion?
Well it saves you using so much of the good stuff ime
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Re: Will this need undercoat or primer or something?

Post by DefTrap »

Asian Boss wrote: Fri Dec 17, 2021 5:04 pm It's a serious thread.

My instinct is it's part of the panels, not part of the wallpaper.

I just took the wallpaper of the stairs and it was the same but without the bad panel. And it painted fine.

I bought a pot of Crown Primer / Undercoat. I'll give it a quick sand and then some of that.

I thought the Farrow & Ball paint was expensive but the Crown was £20 for a little 750ml pot. Bloody Crown goons had my pants right down there. I should get into the paint game rather than the turning-up-the-home-counties-accent-and-threatening-to-have-people-thrown-out-of-their-cottages line I'm currently engaged in.
Well it's worth making sure it's not part of the backing clinging on, the previous goon may have used mental strength glue on that bit for some reason. Hard to tell from your pic

Good paint is worth getting, fewer coats

Not that fecking one-coat stuff though. Hideous.
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Re: Will this need undercoat or primer or something?

Post by slowsider »

DefTrap wrote: Fri Dec 17, 2021 8:20 pm
slowsider wrote: Fri Dec 17, 2021 6:41 pm Do you need primer/undercoat for emulsion?
Well it saves you using so much of the good stuff ime
Just thin the emulsion for the first coat
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Re: Will this need undercoat or primer or something?

Post by Horse »

If you do use lining paper (we used 1000 weight in a couple of rooms), be aware that although, when dry, it's like cardboard, when soggy will conform to the surface below.

In other words, like paint, the better-finished the base surface, the better end result.
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