Heat Alarm Ceiling Damage

[Deleted member 15266]

Hi this brown staining has suddenly appeared round a kitchen heat alarm that was fitted in February. Any idea what could cause it? We didn’t fit it was done by electrician

 

[RandomGrinch]

Hi,
Is there a roof space above, or is there another floor to your house?

 

[Deleted member 15266]

Another floor not sure if it’s the bedroom or adjacent bathroom.

 

[Deleted member 15266]

Ceiling was also plastered before new kitchen was installed a few weeks before

 

[RandomGrinch]

So probably not a condensation problem.
There could be a small leak from the bathroom / C/H, that is tracking along the new wires to the heat alarm?

 

[Deleted member 15266]

Not mains wired I don’t think interconnecting battery

 

[RandomGrinch]

Ok, odd!
Then could it be grease marks from a very grubby installer!?
If you can, take the alarm down and double check there's no wiring behind!
The ceiling might just need a clean and the paint touched up.
Are there any marks around other items he installed - it may only show up like this here, because of the moisture/grease in the kitchen?

 

[Deleted member 15266]

No. We’ll have a look.

 

[Handymanjo]

Was the kitchen ceiling just skimmed with plaster. Could be grease coming through from old plaster.May need to seal ceiling and paint again.

 

[Deleted member 15266]

Wonder if this is the case. Heat alarm removed no discolouration on that. No leak under bath. When I wipe the marks with soap water they come off.

 

[Handymanjo]

You may need to use something like zinsser stain block sealer on your ceiling as grease will keep coming through.