Preparing wall for wallpaper

Sindy

About a month ago I had a DPC on internal wall and then replastered a metre high.
How long do I have to wait before wallpapering the wall as advice from the company is to wait at least 9 months for it to dry?

Also can anyone advise please what I should use on newly plastered walls before wallpapering?

Should I just "size" the wall with diluted paste?

Thanks

nickj_2

as long as the plaster looks dry - and it should be after 9 months , it should be ok to paper - just use thin paste to size the walls -

misgrace

Sindy wrote: »

About a month ago I had a DPC on internal wall and then replastered a metre high.
How long do I have to wait before wallpapering the wall as advice from the company is to wait at least 9 months for it to dry?

Also can anyone advise please what I should use on newly plastered walls before wallpapering?

Should I just "size" the wall with diluted paste?

Thanks

It should definately be dry now, when you have a bonding plaster, then on top the skim, you have to wait approx 6 months before you can paper, however, this is for vinyl paper, and you shouldnt paint using Vinyl paint until the six months are up, as the plaster has to dry from the inside out, plus the vinyl paper or paint does not let the plaster dry, so if there is any moisture still left, the vinyl paper or paint will trap it, and a few months down the line you will see what looks like damp patches appearing from the bottom of the wall, and this will move upwards.
You can paint using a contact or super matt paint, (non vinyl), or even lining paper, but never use vinyl paper or vinyl paint till the six months are up.

silps

Hi Misgrace,

We just had tiling removed and they used a coat of bonding plaster then skimmed with finishing plaster. And the ceiling artex was skimmed with 2 coats of finishing plaster. How long before this can be painted? Would a week be okay if the plaster had turned light in colour.

Sindy

Misgrace
Thanks for the reply.

I am going to be using Vinyl paper so it looks like I'll have to wait 6 months.....

Thanks

misgrace

Hi Silps, The plaster over the artex would be a skim, so usually anything from 4-7 days in decent weather conditions.
Personally I would wait the 7 days,and when it all goes a very pale pink then its dry.

Have you let the plaster dry naturally?, by this I mean, you havent switched on the central heating.

I take it you know to do a mistcoat first of mat paint, preferably a contract or supermat

Also, get the oldest worn piece of sandpaper you can find, or the softest, and give the ceiling a light rub down before you mistcoat, you will see what looks like lines, but a light sand they will disappear, also, you will see tiny little nibs, (like pinheads), lightly sand them as well, then mistcoat.

If you want to see if the ceiling requires any filling after you have done your mistcoat, turn on the artificial light in the evening, it will show up any trowel marks, indents, gouges etc that will need to be filled.

As to the ex tiled area, are you re-tiling it, or are you just painting it?

misgrace

Sindy wrote: »

Misgrace
Thanks for the reply.

I am going to be using Vinyl paper so it looks like I'll have to wait 6 months.....

Thanks

Your welcome sindy:D and its a very good idea to wait the 6 months, cause if you do paper with the vinyl paper, 8/10 times you will have problems.

There is nothing stopping you using ordinary paper,but you would be papering twice lol.

It will be worth the wait, the guy probably said 9 months to cover himself, but 6 months is enough.

I do know someone who couldnt wait, even though I told them, but they were impatient, it was approx 4-6 weeks after that you could see the damp coming up the wall, they had to get it all chopped out and redone.:rolleyes:

silps

misgrace wrote: »

Hi Silps, The plaster over the artex would be a skim, so usually anything from 4-7 days in decent weather conditions.
Personally I would wait the 7 days,and when it all goes a very pale pink then its dry.

Have you let the plaster dry naturally?, by this I mean, you havent switched on the central heating.

I take it you know to do a mistcoat first of mat paint, preferably a contract or supermat

Also, get the oldest worn piece of sandpaper you can find, or the softest, and give the ceiling a light rub down before you mistcoat, you will see what looks like lines, but a light sand they will disappear, also, you will see tiny little nibs, (like pinheads), lightly sand them as well, then mistcoat.

If you want to see if the ceiling requires any filling after you have done your mistcoat, turn on the artificial light in the evening, it will show up any trowel marks, indents, gouges etc that will need to be filled.

As to the ex tiled area, are you re-tiling it, or are you just painting it?

Thanks misgrace,

Yes I have read your other replies previously on mistcoat. Actually I think the builders are going to use new plaster paint next week which will continue to breathe and allow plaster to dry.

We just switched on the heating for an hour this evening because we were feeling cold. What difference will this make?

The ex tiled area is going to be painted but in some areas the plaster is quite thick because they had to match up 2 seperate levels in the wall to make them even. And they had to fill in a deep chiselled area where they broke the hot water pipe and had to repair it in the wall.

Thanks again for your help.

misgrace

silps wrote: »

Thanks misgrace,


We just switched on the heating for an hour this evening because we were feeling cold. What difference will this make?

.

What can happen sometimes when you turn heating on when you have new plaster, is the heating can cause hairline cracks, you wont see then till you have a coat of paint on.
Unfortunately this is quite a common occurance, and its nothing to do with the plastering, it just sometimes the plaster contracts with the central heating.
If this does happen, and the crack hasnt actually opened, then a sand down on the hairline crack will flatten it.

I come across this lots of times, and its just one of those things.

Regarding the thicker tile area, as long as they use a contract matt, and its a smallish area, you should be okay.

If your going for for a kitchen paint, or a silk, then first do the mistcoat with the contract matt.