Decorating - How can I remove a stain from wall.?

Question

Hi Team,
I have an internal wall which is painted. There is a large brown stain which allways comes through when painted. I was advised to use gloss paint which hasn't worked. I don't think the stain is damp, it appears to be some sort of adhesivy substance.
I would really appreciate any tips.
many thanks....

Answer 1

Hi,

You could try a tin of Kilz from Wal-Mart. I've used that before and it's pretty much zapped all stains I've used it on! :-)

Answer 2

Use a stain blocker primer first. Apply a coat of primer. Them after it drys paint over the primer. That should work. Doe the stain increase in size? If so then maybe there is a water leak or something happening in the wall which is a bigger problem. If this is the case the stain will continue to grow and penetrate primer, paint, wall paper or whatever you try to hide it with.

Answer 3

Hi Karl, I would suggest you try to find out what that stain is. My original suggestion would of been for you to use a very good primer, but that might not be enough. You can try and see what happens. That would be the easy solution. The other thing might be for you to remove that section (if it's not too big) all together, replace with wall board and stucco. Then continue with the primer and paint as usual.

Answer 4

The easiest thing is to go to your major local hardware store and tell then that you need a small can of KILZ. It is the best stuff on the market. Just paint like you normally would with that, let dry repeat for a second coat, let dry and then repaint with the color that you want the rest of the wall to be.

Answer 5

Try sanding the spot then apply Kilz primer to it. Let it completely dry . It may take 2 or 3 coats. Then paint. It sounds like an old water spot, if it is this process should take care of it.

Answer 6

I use Aquaseal stain block. It works on most stains, not just water marks. you paint on one or two coats, leaving 2 hours between coats. Then paint over with emulsion. I would double check that there is no leak or anything above though, or nothing will work!

Answer 7

You could try steaming it and see if it will scrape off. Then wash the area well with sugar soap and let it dry!
Or you can sand it off!
In both cases use 2 or 3 coats of primer before re-decorating the wall.

Answer 8

As I see it you have 2 options that will work satisfactorily and they are either to have the wall re-plastered (a lot of mess and expense) or buy a thick, good quality paper that you can use emulsion on.

Answer 9

hiya,i'm a painter and decorator so i'll tell you how to fix this,use sand paper to rub down the bad area,a good sand..... get 2 and a half ltrs of oil based undercoat, u can brush or roll which ever you prefer....wait 3 - 4 hours for it to dry,then rub down gently and remulsion the wall,you might need to redo the whole wall because of flashing,this will work,if not i'll do it for free!!!

Answer 10

First try WD40 to remove the stain, second try diluted ammonia, third, try a wire brush, and finally, try sandpaper, then paint.