Sizing Walls

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Tom d'Angler
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Sizing Walls

Post by Tom d'Angler » Mon Jun 07, 2010 2:13 pm

I just wanted to check as tomorrow will be the first time I have hung wallpaper on newly plastered (well, five or six weeks agao) walls...

I gather I need to size the walls first using fairly runny paste. Do I allow the size to dry before hanging the paper or hang while it is still damp? I've only got one wall to do, approx 6ft high by 8ft long.

What's the best practice?

Many thanks in advance,


Tom
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Re: Sizing Walls

Post by stupidstu » Mon Jun 07, 2010 2:45 pm

size it have a coffee then paper
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Re: Sizing Walls

Post by Tom d'Angler » Mon Jun 07, 2010 2:50 pm

size it have a coffee then paper
Sounds like an excellent plan!
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Re: Sizing Walls

Post by royaloakcarpentry » Mon Jun 07, 2010 4:17 pm

Size it and cut drops while you have a coffee.......multi-task and you get home earlier lol.
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Re: Sizing Walls

Post by Tom d'Angler » Mon Jun 07, 2010 5:01 pm

multi-task and you get home earlier lol.
Blimey, I don't know if I can do that... I'm the wrong sex for multi-tasking!
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Re: Sizing Walls

Post by Deccy » Mon Jun 07, 2010 6:39 pm

Proper way to do it is to size the night before really but if that's not possible at least wait until it fully dries.
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Re: Sizing Walls

Post by Tom d'Angler » Mon Jun 07, 2010 9:04 pm

Now I'm confused...

Wait until it is fully dry?

Or wait until it has dried a bit?

:dunno:
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Re: Sizing Walls

Post by Jaeger_S2k » Mon Jun 07, 2010 10:16 pm

Should really be dry, fully dry.
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Re: Sizing Walls

Post by royaloakcarpentry » Mon Jun 07, 2010 10:34 pm

Depending on absorption rate and room temp, should still get the whole lot done in a day.
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Re: Sizing Walls

Post by Tom d'Angler » Tue Jun 08, 2010 3:43 pm

Thanks for the advice.

The day didn't start well... I opened the back of my van to find the bucket of paste left over from last week's job had fallen over and the bin liner it was in had split and paste was all over the floor of the van! Luckily, yesterday my customer told me to leave all my gear in their house to make it easier for me to get started today.

I made up some more paste and sloshed it on the wall making a right mess of the newly (yesterday) painted skirting! However, a damp cloth took care of that and then all I had to do was sit back and wait for the size to dry... it took TWO hours! I couldn't do anything else as this is the last piece of the job and it wasn't worth going home as this was one of my rare very-long-distance jobs (well, 11 miles from home!). Never mind, the customer kept me entertained with her stories of the good old days interspersed with plenty of cups of tea!

I knew I should have done it yesterday before I left, but back then I didn't know if that would be ok as I hadn't yet started this thread :cussing:

Hahaha! You live and learn!
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Re: Sizing Walls

Post by royaloakcarpentry » Tue Jun 08, 2010 6:27 pm

Surprised you are shocked at waiting two hours.......well, I did tell you to multi-task pmsl
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Re: Sizing Walls

Post by Tom d'Angler » Tue Jun 08, 2010 6:30 pm

Surprised you are shocked at waiting two hours.......well, I did tell you to multi-task pmsl
Does drinking tea count as multi-tasking?

I was and wasn't surprised at the two hour wait, after all paste seems to dry on the back of the paper within 10 minutes or so! After reading the advice on this thread I realised I should have just gone ahead and sized the wall yesterday and thenm if neccessary, I could have done it again this morning if you are supposed to hang the paper while the size is still wet. :thumbleft:
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Re: Sizing Walls

Post by royaloakcarpentry » Tue Jun 08, 2010 6:38 pm

Aaaaah, with you, now.
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Re: Sizing Walls

Post by paintycait » Tue Jun 08, 2010 7:50 pm

Tom there are a number of reasons why you size any wall and I would size a painted wall, or old plaster that hadn't been sized previously.

Firstly you size the walls to seal the walls and give an even level of porosity on the surface...this means you won't get one bit where the paste sucks straight in and the rest staying workable, it will all stretch and shrink at the same rate, there won't be any odd seams opening up or lifting.

Secondly you size the wall the give you a bit of slide.

Thirdly you size the walls to do yourself a favour in the future. When it comes to stripping the walls and repapering in the future the stripping will be a doddle. We always work on the assumption that we are so good the client will never want another decorator to work for them :toothy7: But even if it's not us who returns to strip the walls it is a politeness to the decorator that follows you to size. There has been many a wall I've picked off lining paper in penny sized pieces only to find the last guy had the GALLLL to sign the wall (and I put his/her name down in a little black book and come the revolution.......................)


For all this to work to best effect....let the size dry thoroughly. I would also maybe have sized my walls before painting my woodwork, but TBH it shouldn't have made that much mess unless you overthinned. If you ever get caught having to roller walls over finished woodwork and don't have time to mask (or don't have any to hand), wet the top edge of the skirt before you roll...just run a damp sponge over it. That little amount of water will make wiping off roller spray much easier.
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Re: Sizing Walls

Post by bronz » Tue Jun 08, 2010 8:27 pm

Anyone else use pva to size? Goes on like water when it's thinned a bit (with, erm, water), dries fast and seals the surface pretty darn good. In fact I've spent all of today rolling pva onto new plaster ready for papering soon.
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