It seems that every other post on here at the moment is related to damp in someway or another, but I'm afraid I've got another if anyone could be so kind to please share their opinion.
We have a fairly decent sized lounge measuring around 7.5m by 3.7m. One side of the 7.5m length and both 3.7m widths are external walls, with a chimney breast in the middle of the 7.5m. The wallpaper (okay lining paper, that has been up an embarrassingly long time) in the red area looks damp for a few inches above the skirting board.
On the external wall, the bricks and pointing look in good condition, as does any guttering and roofing. The damp proof membrane looks good with no obvious sign of bridging. We did have cavity wall insulation installed a few years before this first started appearing. Our house is in an exposed position.
I know they're utterly rubbish, but our damp meter (with brick mode enabled) shows the humidity of the wall just above the skirting board to be about 14%, a few inches above where its spotty about 12% and finally a few feet up around 9-10%.
There is a slightly different feel to the paper where it's marked, this could be due to present damp but I'm guessing the texture has just been permanently changed by any previous damp.
My wife previously made some salt-dough learning toys for my little one, one of them was left learning leaning against this wall and it turned really wet and mushy. The other toys in the 'set' were away in the draw and are perfectly dry. Unfortunately I don't know how long it was there for, I'm guessing between a few days and a couple of weeks, but could be wrong.
I'm thinking it would either be:
* Rising damp - highly unlikely as its actually really rare and the dpm seems fine
* Problem with the cavity wall insulation
* Condensation - I would have thought this would be more likely be towards the ceiling
I'd be grateful for any thoughts.
Thanks
We have a fairly decent sized lounge measuring around 7.5m by 3.7m. One side of the 7.5m length and both 3.7m widths are external walls, with a chimney breast in the middle of the 7.5m. The wallpaper (okay lining paper, that has been up an embarrassingly long time) in the red area looks damp for a few inches above the skirting board.
On the external wall, the bricks and pointing look in good condition, as does any guttering and roofing. The damp proof membrane looks good with no obvious sign of bridging. We did have cavity wall insulation installed a few years before this first started appearing. Our house is in an exposed position.
I know they're utterly rubbish, but our damp meter (with brick mode enabled) shows the humidity of the wall just above the skirting board to be about 14%, a few inches above where its spotty about 12% and finally a few feet up around 9-10%.
There is a slightly different feel to the paper where it's marked, this could be due to present damp but I'm guessing the texture has just been permanently changed by any previous damp.
My wife previously made some salt-dough learning toys for my little one, one of them was left learning leaning against this wall and it turned really wet and mushy. The other toys in the 'set' were away in the draw and are perfectly dry. Unfortunately I don't know how long it was there for, I'm guessing between a few days and a couple of weeks, but could be wrong.
I'm thinking it would either be:
* Rising damp - highly unlikely as its actually really rare and the dpm seems fine
* Problem with the cavity wall insulation
* Condensation - I would have thought this would be more likely be towards the ceiling
I'd be grateful for any thoughts.
Thanks