We've got paint bubbles

Kuztardd · 29 May 2007 at 8:18AM

deleted thread

handyman. · 29 May 2007 at 8:21AM

have the walls been newly plastered?

how did you prep the walls prior to painting?

handyman. · 29 May 2007 at 8:27AM

you need to remove a bubble and see if the white and pink paint has all come off the plaster. If so, the sealing paint hasnt keyed into new plaster, and you have a big job on your hands.

handyman. · 29 May 2007 at 8:28AM

what did you do when you put the white paint on the new walls? What paint? Did you use pva anywhere?

misgrace · 29 May 2007 at 4:09PM

handyman. wrote: »

the sealing paint hasnt keyed into new plaster, and you have a big job on your hands.

handyman is right, and there could be a number of reasons.

You say it was done before you moved in approx 3 months ago, so either they PVAed the walls prior to painting, which is a no no, or they didnt do a miscoat, or they painted the walls with silk,without a miscoat,or over the PVA. and you have gone over with matt, or vice versa
If the walls had just been skimmed, then you would apply a miscoat of matt,you could even get away with Vinyl matt, but if its been bonded and skimmed on top, then you should only use trade matt.

But thats by the by now, its what you do with it now, I need to know if you have painted it matt or silk, I cant really tell by the pic, (eyes not like they used to be) lol before I can give you any more advice.

handyman. · 29 May 2007 at 4:47PM

move house

handyman. · 29 May 2007 at 5:12PM

if its peeling due to using vinyl matt straight on plaster, and its peeling, you need to strip the whole lot off, and do it again. You use a combination of scraper, sander, and sandpaper. Its a great job

If its pva, i dont know, never stripped paint off due to pva (yet), misgrace will know.............

misgrace · 29 May 2007 at 7:00PM

Again HM is right:D Even if its PVA underneath it would still strip off, but before you go down that route, try this......

Depending on how many bubbles, or your patience lol...

Scrape the paint/bubbles away, sand down where you have scraped, even if it means you have slightly scraped away the good paint, but try and not scrape that off if you can help it.

Then knock up some powder filler and put that over where you have scraped off the bubbles.
When dry sand down till the filler feels flush with the wall, if you still feel its slightly gone in, or still slightly indented, do it again.

Get some 'oilbase' undercoat, paint that on all the filled bits, when dry, touch the areas up with your diluted colour, do this at least 3 times.

Then, roll the whole wall/walls again as normal.

If you dont roll the walls, then you will see where you have touched up.

This should work, as I have done this quite a few times.

Give it a couple of days, and if it doesnt work, which I am 99.9% sure it will, as its never failed with me, then you might have to scrape thw whole lot off, or line the walls.

Please let us know how you get on.:D

misgrace · 4 June 2007 at 7:12AM

Hi there Kuztarrd, I would use the oilbase U/C, but make sure you give it a good rub down first, and if you have any sugar soap lying around, wash the wall down with that, then knock up some diluted U/C (oilbase) mix well with white spirt, give it a good stir, this will thin it down, and be easier to paint with, and still have your coverage.

Leave for a couple of days, then start again, still make sure your first coat of clour is diluted as though you were doing a miscoat, but not as thin, then apply your further coats, still just slightly water it down..

You shouldnt have any problems, BTW are you using a good quality paint?

handyman. · 4 June 2007 at 3:42PM

sugar soap would be a good idea as well, just to be safe. You get it out of bnq .

If the surface is down to the plaster, you do whats called a mist coat. Its a watered down (about 20%) paint. It 'bites' into the surface (or soaks) and creates a good bond with the plaster. What may have happened before is thye have put paint straight onto the surface, and it hasnt soaked in and just sat on the surface.

Its always better to use a non vinyl matt emulsion watered down. There appears to be no difference on the instructions on vinyl and non vinyl, but the vinyl paint appears to not soak in as well, thats all, so a lot of us use non vinyl just to be on the safe side when doing a mist coat

handyman. · 4 June 2007 at 3:57PM

forgot that you may also have a pva problem..............I'm guessing, but i would think any oilbased undercoat will do. (i still havent had to strip a wall due to pva, just due to no mist coat)

Wait for an other reply

It will just be called 'oilbased undercoat', not matt silk or anything like that

We've got paint bubbles

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