Damp problem

[Fazer Tom]

Hi all, got a problem with some damp ive come across in the house, its at the back of the chimney breast, we had logs there originally but the wofe wanted to remove them for the kid to have toys there, as shes removed the ligs shes come across a large unpainted section, shes painted it but is all immediatley boubled up and started peeling off. Im not afraid of any diy, being an auto electrician but i dont have a clue on how to go about sorting it.

I suspect its rising damp. Its a midterrace too if that helps.

https://s11.postimg.org/vwgd9882b/20170228_220605.jpg
____________________
(CBT 01/07/11. Theory, 21/05/12. MOD 1, 01/06/12. MOD 2, 3/08/12)

Past: (1981 CG125) (1992 ZZR250 x2) (1976 KZ400) (1993 400 Superfour) (2002 Triumph TT600) (1998 Fazer) (2001 CCM 636) (2000 CCM 604) (2007 Kawasaki Z750) (2005 Husqvarna SM450R) Current: (1989 Bandit 400)

[grr666]

Is it on a party wall? Maybe the problem isn't in your house at all.

Also OP is this guy https://www.caravanchat.org.uk/website/wp-content/uploads/2013/06/officercrabtree250x267.jpg and I claim my cinq francs.
____________________
Currently enjoying products from Ford, Mazda and Yamaha
Ste wrote: Avatars are fine, it's signatures that need turning off.

[Fazer Tom]

Yeah, directly behind that is the neighbouring houses chimney.
____________________
(CBT 01/07/11. Theory, 21/05/12. MOD 1, 01/06/12. MOD 2, 3/08/12)

Past: (1981 CG125) (1992 ZZR250 x2) (1976 KZ400) (1993 400 Superfour) (2002 Triumph TT600) (1998 Fazer) (2001 CCM 636) (2000 CCM 604) (2007 Kawasaki Z750) (2005 Husqvarna SM450R) Current: (1989 Bandit 400)

[grr666]

If possible might be worth a nose next door and see whats going on their side. It may just need a few days
to dry out properly now the air can get to it, is your chimney capped? I used to have a drip drip in my master
bedrooms fireplace whenever it was raining hard until I put a pepper pot up in there. Mines held in with gripfil.

https://www.google.co.uk/search?q=chimney+pepper+pot&rlz=1C1CHWA_enGB592GB592&espv=2&biw=1517&bih=735&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjAjdTXhrTSAhUCD8AKHe1YCEgQ_AUIBygC
____________________
Currently enjoying products from Ford, Mazda and Yamaha
Ste wrote: Avatars are fine, it's signatures that need turning off.

[pompousporcup...]

I have tins of this going for a 6 quid each if you find you can't do anything about the damp.
https://www.amazon.co.uk/Polycell-PLCDS1L-Damp-Seal/dp/B001EJ1X5M/ref=sr_1_3?ie=UTF8&qid=1488356828&sr=8-3&keywords=damp+proof+paint

I bought too much of it by accident

[doggone]

It could just be tarry soot in the plaster from fires years ago rather than serios damp, though moisture might be implicated in carrying the stain through.
Sealing it in and painting over might work but since it's a smallish area knocking the stained plaster off and re-doing is an option.
You might find reasonably attractive brick or stone behind which could be left exposed.

Generally such areas will stay drier if left to 'breathe'.

[grr666]

Oh and next time the Mrs paints something...

https://multimedia.3m.com/mws/media/13373P/232-3-tape.jpg?boundedSize=310


____________________
Currently enjoying products from Ford, Mazda and Yamaha
Ste wrote: Avatars are fine, it's signatures that need turning off.

[stinkwheel]

There is no such thing as "rising damp".

It's a scam invented by companies to charge people a fortune to inject chemicals into their bricks.

There is such a thing as "damp". It happens when moisture gets directly onto your brickwork.

So in a chimney breast, the most likely way for this to happen is by it coming down the chimney.

If you've had logs stacked in there, it's likely that a little moisture has got in and has been prevented from evaporating properly by the stack of logs.

Which brings us neatly to the other common cause of "damp" in houses which is condensation. This is caused by high humidity, a low surface temperature of the affected area and a lack of ventilation. Such as you might find behind a stack of logs.

If the wall itself is colder than the surrounding room, it could even be below the dew point at which point condensation will form (like you see on the inside of your windows, they aren't leaking and the water isn't magically "rising" from elsewhere, they are colder than the surroundings, water vapour condenses on them) .

Worth noting that disused chimneys are usually either blanked off or have a ventilation grille left at the base to allow them to breathe (thereby increasing venmtilation and reducing condensation).

TL;DR It's probably a bit of damp that's been trapped behind your stack of logs. Leave it a while to dry out, I'd stick a dehumidifier in there for a couple of days. Next most likely is simply condensation. Next would be water coming down the chimney.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[Feasty]

[grr666]

^^

Yeah, if you want to restrain a woman good old gaffer tape works best.
____________________
Currently enjoying products from Ford, Mazda and Yamaha
Ste wrote: Avatars are fine, it's signatures that need turning off.

[arry]

What Stinkwheel says - especially on terraced housing with double glazing.

[grr666]

[Moo.]