mysterious patch of paintwork?

[eddy2chips]

Hi All,

I'm hoping someone can shed some light on a problem patch on one of my walls.

Approx 1 year ago I had the walls of 3 rooms skimmed, the walls were prepped with a sealent and had several watered down coats of emulsion, before painting with the final coats of colour. The paint in all of these rooms took fine with the exception of one patch, rougly 1/2 metre square, where the paint appears to have lots of tiny bubbles in it. The paint is cracked and dry, and if i rub my hand over the surface the paint is powdery leaving a dust residue leaving the skimmed wall visible.

While the paint would easily be removed from this area and the wall repainted, I cannot understand why this has happened and dont want to paint it again only to see it reoccur.

Hopefully someone can offer some much needed advice, I will also try and post a picture if needed.

Thanks in advance

 

[roughcaster]

A picture would be most helpful,, if poss.

Roughcaster.

 

[joe-90]

Yeah you could hang it over the bodgy spot.

 

[roughcaster]

Yeah you could hang it over the bodgy spot.

Good thinking Joe.

Roughcaster.

 

[LJW61]

Sounds like it was neat paint applied there over porous plaster/filler rather than a thinned 'mist' coat..

P.S. Nice one Joe

 

[eddy2chips]

Images are quite large so have put them here:

(www.) see-my.com/wall


hope it helps

Thanks

 

[roughcaster]

It looks as if it might be salts/efflorescence bubbling through the plaster,, are the walls brick?

Roughcaster.

 

[eddy2chips]

Yes, the walls are brick. Whats the best course of action?