Possible damp appearing on ceiling

C_Ronaldo

Ive noticed a brown patch appearing on the ceiling, would this be damp, noticed before it was painted over but i wasnt sure if it was damp or just a mark and it was recently painted over and the patch has re appeared in teh same place so im taking a guess that its damp, is there anything i can myself to check if it is really damp, would i need to get a builder say to have a look at it, the patch is where the ceiling meets the wall if you see what i mean,

LandyAndy

Upstairs or downstairs? House or flat? Outside wall or internal wall? What rooms are above the patch?

Most likely causes. Leak from pipe running above the ceiling or from badly sealed shower tray etc. Cracked or missing roof tiles or failed flat roof. Poor sealing around window on floor above letting rain water in. Lost pointing to brickwork.

It is almost certainly damp but just because the stain has reappeared doesnt mean the source is still active. Normal emulsion won't cover damp stains so you'll need a special paint to cover it effectively and then emulsion over.

C_Ronaldo

Yes i forgot some of the details,

its on the inside and its downstairs, whats above is part of the extension we had done, theres just a very small amount of space up there,

Doozergirl

The extension roof and loft space?

You've probably got a leaky roof or join. You need to go looking for what's causing it, get it fixed and then use some stain blocker perhaps and repaint over with emulsion.

nickj_2

you can use solvent based undercoat to cover stain ,

C_Ronaldo

cheers for your help

Mr_C_10

Doozergirl wrote: »

The extension roof and loft space?

You've probably got a leaky roof or join. You need to go looking for what's causing it, get it fixed and then use some stain blocker perhaps and repaint over with emulsion.

Just had a similar probelm after heavy rainfall last night, got up this morning and a couple of carpet tiles are wet directly underneath wher the kitchen roof joins the gable end of the house. The kitchen is on the side of the house and has a flat roof.

Main priority is getting the roof join sealed to prevent any further leaks, is there a product available in the high street that will do this effectively.