Damp wall issue

[singled5678]

Hi in my bedroom I have a damp patch that appears and seems to get worse after a shower in my ensuite.

I'm not sure if its the steam from the shower hitting the already dampish wall.

It seems there at the moment even after no rain for a few days.

I had someone check the roof and they think its the seal around the chimney leaking.

I went in the loft tonight had a look and can see it looks like the felt around the chimney is damp, but can't see its entry point to the wall. Also it looks like a piece of wood to the right if its sticking out of the roof.

I've attached a picture here.

Does anyone think the dampness could be running down the side I can't see and what do you think to the wood sticking through?

Another roofer reckons I need drip trays on the eves, I think he's wrong?

Untitled

• singled5678
• 10 Jan 2013
• 1

Untitled

• singled5678
• 10 Jan 2013
• 1

[/img]

 

[PrenticeBoyofDerry]

Difficult to tell by your photos:
Is the chimney flue operational?
The damp could be condensation of the flue pipe or flashing on roof.
But you say conditions worsen when showering, so could have two problems.
Is the en-suite wall where the cubicle is?
If so is it finished with tiles or water resistant material?
As it should be tiled or water tight, but the seals on tray/basin my have failed and also the grout on tiles.

 

[singled5678]

Thanks for the reply, the flu is in operation but not been used for a while.

The ensuite is partly tiled, the actual shower cubicle is fully. But the rest us tiled half way up. However it is a about one and a half meters away from the damp patch.

I wondered if condensation was collecting on the flu in the loft from the shower as well as perhaps leaking through the chimney seal on the roof.

 

[PrenticeBoyofDerry]

What about pipework within the wall, where the issue is?
Does the en-suite have extraction?

 

[singled5678]

Thanks, I'm not sure what pipe work would be there without attempting to get further to the roof and looking down. Although I can only see the flu and not sure what other pipes could be there? Any ideas what there could be?

 

[singled5678]

Ps yea there's extraction

 

[PrenticeBoyofDerry]

Without knowing your lay out and the way pipes could be routed, could not give an definitive answer.
But the usual stuff to consider would be; any hot/cold water feed to and from the en-suite, possible waste pipes(but unlikely), flow and return pipes for radiators.

 

[PrenticeBoyofDerry]

Ps yea there's extraction

Is it a timed overrun or just wall vent.

 

[singled5678]

It's an extractor fan in the ceiling with the pipe running up the loft and into the roof. It's a about two metres away from the flu to its left

 

[singled5678]

Think I have got to the bottom of this, my neighbours have a storm collar on their flue, I dont. So water is leaking between the lead flashing and flue.

I am going to seal around the flue, and instakll a storm collar.

Thing is the size of the required collar.

I am going to measure the circumference of the flue, and I believe storm collar sizes are the diameter of the hole in the storm collar is that correct? So I will work out the diameter.

 

[Alastairreid]

Looks like 125mm twinwall so get a collar to suit.

 

[singled5678]

Thank you I've ordered one