How much damp can new plaster take?

[MisterBoy]

We just had a new ceiling put up and skimmed in a room. In the incredibly heavy rain I have noticed one edge want dark again after drying, there must be a small leak in the roof we had never noticed.

It's really not the weather to be up on a roof but I'm picturing a puddle on my brand new plasterboard and wondering if that was money down the drain?

Will getting wet a few times ruin it, or is it only prolonged damp... Weeks or months... That will cause it to fail?

 

[sparkwright]

At the moment the damp stain won't cause any longterm damage - though you may need a stainblock before the final coat of emulsion goes on.

However - the cause of the problem needs addressing NOW or as soon as it's safe to do so.

 

[MisterBoy]

Thanks... Great timing!

Weirdly it's been raining for about a week straight but only in the really stupidly heavy rain has it got damp. In between it's dried up while still raining so I hope it's something we might be able to at least address quickly now and return to in spring.

 

[sparkwright]

There's lots of roof sealer products that can be painted on even in damp conditions that may provide a temporary fix.

 

[MisterBoy]

Wasn't aware of that thanks @sparkwright I'll look into it.
I'm hoping it'll be obvious where the water is getting in!