help with repair to ceiling leak stain

[glider26]

hi,

We just bought a house that had these two stains on the kitchen ceiling:

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• glider26
• 4 Jun 2011
• 1

After a bit of investigation, I concluded that one stain was from worn sealant around the en-suite shower (sealant replaced) and the other from a leaky joint in the airing cupboard (olive replaced, leak stopped). It's been a couple of weeks since I made these repairs and the ceiling felt bone dry, so I thought I'd try to paint over the stain. I had to remove a 25 cm strip of plasterboard joint tape. I bought some joint tape to replace it but it didn't stick with the paper glue that I used. My first question is then what should I use to make it stick? Would wallpaper glue work?

Anyway, I still put on a coat of white emulsion with a basic paintbrush and and achieved this result:

Untitled

• glider26
• 4 Jun 2011
• 1

My second question is how many coats will it take for the stains not to show through at all and does the fact that after one layer it still shows through in one or two places mean that the root of the problem is not fixedl? My third question finally is how do I achieve the textured effect (stippled?) that you can see on the rest of the ceiling?

Any help much appreciated

 

[TheDec]

The stained areas will need to be sealed to prevent this staining from reforming, you could achieve this by one application of an oil based undercoat. However seeing as the stains are due to water damage there is a possiblity that salts have been released which could result in the formation of efflorescence, in which case the undercoat would fail.

A better choice would be to apply one coat of an Alkali resisting primer, then you would be ok to carry on with your emulsion.

Dec

 

[TheDec]

Sorry missed the other two questions, to busy eating my take away. Jointing compound will stick back the tape yet seeing as this is artex and you need to repair the textured coating you could use that, remember to soak the tape first in water. repairing the Artex can prove difficult so try and achieve a free flowing mix and apply it to the damaged area, then you will need to reproduce the stippled effect. you could achieve this with either a stipple brush or lightly dabbing the width of a paintbrush, yet a perfect match will prove difficult.

Dec