Ihave a bare plaster wall,How do i size it ..ie what proportion PVA glue to water do i use..?

Answer 1

the condition of the untreated plaster is very important, before you apply the pva mix ,sweep the wall with a soft handbrush, this will remove any debris, your pva should be 50/50 mix of cold clean water, add the water to the pva, this will stop any lumps forming and mix thouroughly with a wooden stick,apply from the base up, this will help with the runs that can form, check the adhesion to the wall by scratching a small scratch in a corner, you should be able to peel the film, back a little,remember to cover the scratch up, this will give you a plasticised coat fixed to the wall that will allow any other applied medium to your wall without soaking in, it will form a barrier to water and stop damp patches leaking through from an outside wall, if your wall is not going to come into contact with moisture, say in a kitchen or bathroom, there is another cheaper way to achieve a sized wall by using a good wallpaper adhesive, this has the advantage on price, and also it contains funghicidal inhibitors, make a thin paste up and roller it onto your wall allow to dry, you can then paint over, hope the tips help, good luck

Answer 2

Don't bother using PVA use wallpaper adhesive. its cheaper. If you use PVA you will NEVER get the old paper off. PVA is a powerful glue as used by builders to treat bare brick walls PRIOR to plastering.

Answer 3

there are many brands of Pva on the market.
Best to check the instructions.
I use a garden spray bottle to do mine.
If you are getting a milky bluish white glazed look as its drying you have more than enough.
If its new plaster you don't need much about 5parts water to one part pva with the better brands.
if the dust comes from the wall when you touch it lightly you need to do a couple of coats.
It should start to run down the wall as you are using it.

Answer 4

it depends on what you want to do with it..
if you want to paint it then you let it dry ,
then use contract emulsion watered down 50% as a first coat. then further coats , say 2 full strength.
if you want to paper it just let it dry for a few weeks..
if you want to keep the bare plaster look ,let it dry for a few weeks then buy a matt, semi-sheen, or gloss acrylic varnish and dilute the first coat 50% , next 2 coats full strength.
Dont put PVA on it ..
thats used to seal the render before you plaster a wall..
hope that helps..

Answer 5

You only need to use a watery wallpaper paste as it does the same job as pva. Its much quicker and a lot less hassle, not to mention cheaper.

Answer 6

a cheaper alternative is to use wallpaper paste ,does the same job as pva yet one hundred times cheaper

Answer 7

1

Answer 8

you can buy size in pacets with instructions on them from most hardware shops.