Anyone there with building or surveying knowledge. Our house has developed a black mould which appears on inside of north or east facing walls. We have been told this is due to a build up of condensation. We have been told by a damp company that it is not damp and they tried to sell us some contraption that goes in the loft and reduces the condensation. This is however an expensive solution which i have been told can be noisy and uses a lot of electric. Any views or suggestions on this would be most welcome.
mouldy walls
- Thread starter FoxCovert
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Melton Fox
Dancing Queen
Is it near the top of a window?
No, below window above skirting board in a small pantry in kitchen and also in a small bedroom above skirting board on a wall that does not have a window.
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Melton Fox
Dancing Queen
OK, I have some black mould in the bathroom just above the window. It is North facing but is due to a small hole in the material that is waterproofing the bit above the window. Mine is definitely damp related.
I'm colour blind, so it might not be entirely black, but it certainly looks like it.
beaumontfox
New Member
I'm sure NF and Melts value your comments on the subject.:icon_roll
muzzysgal
Active Member
I had this problem near all the windows in my house when I moved in, however it was worst in a bedroom that was on the corner of the house.
I bought some condensation absorbent crystals and a small rectangular container especially for them from Wilko's - only a few pounds, I think.
It did help over the Winter - the container was full of water by Springtime. I would also leave the windows slightly open all the time (unless I was going out for any length of time), and opened them as wide as possible for as long as I could bear.
I was told it was because my house was too well insulated and there was nowhere for the moisture to escape.
Something similar to this:
http://www.lakeland.co.uk/moisture-...aning-protecting-de-humidifiers/product/21538
I bought some condensation absorbent crystals and a small rectangular container especially for them from Wilko's - only a few pounds, I think.
It did help over the Winter - the container was full of water by Springtime. I would also leave the windows slightly open all the time (unless I was going out for any length of time), and opened them as wide as possible for as long as I could bear.
I was told it was because my house was too well insulated and there was nowhere for the moisture to escape.
Something similar to this:
http://www.lakeland.co.uk/moisture-...aning-protecting-de-humidifiers/product/21538
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The Major
Active Member
This is not an uncommon problem. There are 2 things that will help;
1) You can hang a blown vinyl (Fresco) type paper to the walls. This should help insulate the walls and keep them warmer so as not to attract the condensation in the first place.
2) Paint the room with an anti fungicidal paint such as this, http://www.icipaints.co.uk/products/info/glidden_trade_anti-mould_vinyl_matt.jsp . You might have to order it but it should be available from a good decorators merchant.
1) You can hang a blown vinyl (Fresco) type paper to the walls. This should help insulate the walls and keep them warmer so as not to attract the condensation in the first place.
2) Paint the room with an anti fungicidal paint such as this, http://www.icipaints.co.uk/products/info/glidden_trade_anti-mould_vinyl_matt.jsp . You might have to order it but it should be available from a good decorators merchant.
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This sounds very similar to our situation.Thanks MG.
May your walls always remain sound my friend
muzzysgal
Active Member
No problem. It was the bane of my life for months, so I know how you feel!
Matt_B
Well-Known Member
We had the same problem as well and the crystals worked, but it is worth noting that the reason ours was so bad in the bedroon built in wardrobe is because when the spanner who lived here before us put in the wardrobe he pulled all the insulation back in the loft over that corner, then never put it back. As soon as I rolled it back it went away there.
Dour
Well-Known Member
If this is in a pre-war house, the mould in the pantry will be condensation - it should be the coldest place in the house and the window would originally have been a grille, letting air circulate. Lasting solutions will mean increasing the heat and/or ventilation there.
Also, in the bedroom, check outside to see if there's a reason for condensation appearing there. It could be that there's an airbrick that's just been plastered over.
Cate Fox
Well-Known Member
I had the same problem in my front bedroom, the wall under the window would be incredibly damp. Found out that it was because there was no airbrick in that room as originally it had a fireplace which had been blocked up. Had some special plasterboard put up under the windows and re-skimmed and havent had any problems since. Always make sure your air vents are unobstructed or ventilate the room daily.
Macky
Gruntled Member
Frankly, I'm amazed that anyone was at all confused by your post.
As soon as I read your erudite contribution I thought to myself "I'll bet footyguts is going through the same thing. Most likely his porch, judging by the three letters he's used."
Obvious really.
OK mate, no probs.
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