Curling/Peeling paintwork?

cassius


Joined: 20/03/2009
Posts: 110

Message Posted:
23/02/2010 09:28

Whilst doing some re-painting on internal walls, I am finding that the original paint starts to peel and curl back, exposing the plaster.

Does anyone know why this is happening and how it can be prevented.



(For the smart ones out there "I do want to continue painting" so stopping is not an option)

Cassius

bachelibelly


Joined: 04/09/2008
Posts: 275

Message Posted:
23/02/2010 09:47

If you can see a yellowing on the render and a white fluffy deposit then it could be the dreaded and ever popular Cyprus damp, generally appears about a foot above the floor and stretches out horizontally ,many thoughts on cures on here , i have just cut the plaster back and allow to breathe and let the salts in the concrete leech out , did mine 18 months ago and still exposed , also ventilate the property where poss ,regds.

rigsby


Joined: 21/09/2007
Posts: 912

Message Posted:
23/02/2010 11:23

cassius,I know what you mean,try using a brush instead of a roller.

newlad



Joined: 02/03/2008
Posts: 7819

Message Posted:
23/02/2010 12:03

Cassius,

Is it the complete wall,

Paul.

newlad



Joined: 02/03/2008
Posts: 7819

Message Posted:
23/02/2010 12:25

Cassius,

You need to scrape back all the loose and flakey material to a tight edge and then feather off with sandpaper.Then face fill the offending areas,and apply a coat of primer sealer before you put the finished coat on.It sounds to me like the plaster has not been allowed to dry sufficiently before it was first coated.Hence the effervesence.It really is a pain in the arse of a job,but if you dont do it it will come back again,

Paul.

gates


Joined: 08/12/2008
Posts: 1096

Message Posted:
23/02/2010 15:00

give it a coat of trymel fix get it from marshals it might do the trick

newlad



Joined: 02/03/2008
Posts: 7819

Message Posted:
23/02/2010 15:02

Gates,

"trymel fix" whats that matey,

Paul.

gates


Joined: 08/12/2008
Posts: 1096

Message Posted:
23/02/2010 15:08

sorry trimetal fix is a stabalizer and helps adhere the old paint tothe wall i use it on most jobs if there is a sign of paint problems

cassius


Joined: 20/03/2009
Posts: 110

Message Posted:
24/02/2010 09:54

Thank's to you all for your responses. I am sorry I couldn't respond earlier but I was trying to get the paint to stick properly.

I have tried a brush and feathering the old paintwork but to no avail. There is no sign of effevesence , so that is not part of the problem.

It isn't the whole wall YET but when I paint over what seems to be firm and secure paint it just bubbles up and lifts. So then I have to wait till it dries rub it back and refill to level......Re-paint some more and watch as it lifts somewhere else.

I haven't tried Trimetal but I have tried Jotsun equivelent. Again to no avail....

I think I'll just get the house rebuilt........

Love Cyprus though. But hair is getting thinner.

Cass'

SammieB



Joined: 27/07/2009
Posts: 142

Message Posted:
24/02/2010 10:47

Cassius we had this prob in parents house and its not good news. Its the plaster thats the problem, dad had to buy a special external paint with silicone in it, but it worked. Hope this helps!

Sam

newlad



Joined: 02/03/2008
Posts: 7819

Message Posted:
24/02/2010 11:36

Cassius,

How old is the plaster.It could be that there is destemper coming through in which case you will have no alternative but to completeley scrape all of it and completeley seal it before you can do anything,

Paul.

cassius


Joined: 20/03/2009
Posts: 110

Message Posted:
24/02/2010 12:23

Thank's SammieB I have re done the outside late last year with Plastercised paint (Jotsun) But this is not on an outside wall. Thank's too to Newlad but the house is not two and a half yet????

Cass'

newlad



Joined: 02/03/2008
Posts: 7819

Message Posted:
24/02/2010 15:13

Try a pva adhesive i think uni-bond do one.Water it right down and apply to the affected areas.Hopefuly that will do the trick,

Paul.