Damp Patches

[DaveOC]

Hi
I've had a leak in my roof which has come through the bedroom plasterboard ceiling, this has now been cured and is dry but has left small stains, what is best to cover this, can I use, oil based undercoat, oil based Gloss, or a stain block ? The ceiling will be emulsioned. Many Thanks

 

[Growler]

Oil based undercoat , but don't use red if your ceiling is going to be finished in white, or vice versa.

 

[MINDEX]

I am using stain block (doing this sort of redecoration few times a month- average)- drying time 2h - for oil base undercoat 16h effect this same
Salute
MINDEX