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Cavity Wall insulation 20:34 - Jan 8 with 2433 viewsDan_Swan

Any of you learned ones in the know with regards to this?

Looking at buying a house that has it, no evidence of bore-holes so look like it was done when it was built in the mid to late 80's. I've read some issues should it get damp.

Bottom line, is this a good or bad thing to have? Thanks in advance.

Still following Dr's orders!

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Cavity Wall insulation on 20:39 - Jan 8 with 1826 viewsdickythorpe

Damp is a bad thing. There's been evidence that cavity wall insulation offers no protection against it.
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Cavity Wall insulation on 20:48 - Jan 8 with 1806 viewsNogginthenog

Evidence suggests that it can cause damp. I have it in our house and so far no issues but I have heard of people having problems and having it removed.

My house is infinitely warmer since having it done.
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Cavity Wall insulation on 20:52 - Jan 8 with 1799 viewssP7qupUf

Can cause horrendous damp and condensation issues. I have 24 inch poll stonewalls (built in 1916). Warm in winter. Cool in summer. Proper joists too.
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Cavity Wall insulation on 21:06 - Jan 8 with 1775 viewsjack_lord

Apparently there are companies that now specialise in getting the insulation removed and getting your money back.

Lord_Jack BA (Hons) MSc
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Cavity Wall insulation on 21:33 - Jan 8 with 1741 viewsItchySphincter

Had it put in about five years ago under some government initiative. Had it pulled out for free under CIGA guarantee last year. Like a cancer in the lungs of your house. Avoid.

CLEMENT OUT!
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Cavity Wall insulation on 21:35 - Jan 8 with 1735 viewsmax936

Don't, I've had terrible trouble they just put the stuff in without fully checking as to what it'll achieve or what they are doing and nor do they care, we had it put in years ago and have had no end of trouble, had it all taken out of the front elevation before Christmas it seems better
Bricks are porous by their nature but some are better than others, ours are shit, but there's a cavity for a reason it allows a gap for air between the inner and outer walls, so why fill that gap.

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Cavity Wall insulation on 21:39 - Jan 8 with 1725 viewsmax936

Cavity Wall insulation on 21:33 - Jan 8 by ItchySphincter

Had it put in about five years ago under some government initiative. Had it pulled out for free under CIGA guarantee last year. Like a cancer in the lungs of your house. Avoid.


Ciga is the warranty company, I had a bit of a battle on my hands to get them to sort it, the threat of legal action soon changed their minds, luckily I have a family friend who knows all about the stuff and sent them emails they still denied there was a problem a solicitors leter did the trick.

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Cavity Wall insulation on 21:45 - Jan 8 with 1718 viewsGaryjack

The cavities in your walls are the lungs of the house. If they are filled in, your home cannot breath. It's as simple as that really.
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Cavity Wall insulation on 22:14 - Jan 8 with 1678 viewsswanforthemoney

I live on the top of the hill in Sketty/glanmor and the 1938 built house is much warmer since I had it done. Especially on windy days, of which we have a lot, what with facing the coast. My insulation is the type that's lots of little polystyrene balls.

My next door neighbour thinks caboty insulation might be the cause of for some dry rot that set in after he had an extension done.

So it can be hit and miss

One thing to find out is what kind of insulation it is. Properties built these days have a 'celotex' (foam slab) type layer attached to the inner skin with a cavity between that and the outer skin. That's perfectly normal.

If everything else is Ok with the property you might want to get a specialist damp survey if you are worried.

I stand in the North Stand

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Cavity Wall insulation on 22:25 - Jan 8 with 1659 viewslifelong

Cavity Wall insulation on 22:14 - Jan 8 by swanforthemoney

I live on the top of the hill in Sketty/glanmor and the 1938 built house is much warmer since I had it done. Especially on windy days, of which we have a lot, what with facing the coast. My insulation is the type that's lots of little polystyrene balls.

My next door neighbour thinks caboty insulation might be the cause of for some dry rot that set in after he had an extension done.

So it can be hit and miss

One thing to find out is what kind of insulation it is. Properties built these days have a 'celotex' (foam slab) type layer attached to the inner skin with a cavity between that and the outer skin. That's perfectly normal.

If everything else is Ok with the property you might want to get a specialist damp survey if you are worried.


I had that type of insulation fitted in my house in the 80’s, had no problem regarding damp but those polystyrene balls can be a pain if they find a means of escape, they blow all over the place.
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Cavity Wall insulation on 22:37 - Jan 8 with 1646 viewsperchrockjack

Some are not suitable

Depends on width of cavity


Only minority of houses report problems


Energy efficiency is important and why it's highlighted at sale

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Cavity Wall insulation on 22:43 - Jan 8 with 1633 viewsDan_Swan

Big thank you for your input. I'm looking to get advice from everywhere I can. Also looking at stone built houses too.

Cheers!

Still following Dr's orders!

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Cavity Wall insulation on 23:07 - Jan 8 with 1612 viewsmax936

Cavity Wall insulation on 22:14 - Jan 8 by swanforthemoney

I live on the top of the hill in Sketty/glanmor and the 1938 built house is much warmer since I had it done. Especially on windy days, of which we have a lot, what with facing the coast. My insulation is the type that's lots of little polystyrene balls.

My next door neighbour thinks caboty insulation might be the cause of for some dry rot that set in after he had an extension done.

So it can be hit and miss

One thing to find out is what kind of insulation it is. Properties built these days have a 'celotex' (foam slab) type layer attached to the inner skin with a cavity between that and the outer skin. That's perfectly normal.

If everything else is Ok with the property you might want to get a specialist damp survey if you are worried.


Celotex slabs have a foil side to them which is fine, they are used in most if not all new builds these days but cavities are normally 4"now which leaves an air gap between Celotex Slab and inner and outer walls, there are 4" thick slabs which fill the cavity and providing these are correctly fitted shouldn't allow damp through to the inner walls due to their foil backing which obviously face the inner walls, poly balls also work because they don't absorb moisture, they should be fine as long as they're packed tight, but even then it depends on the porosity of the outside walls and again they don't allow the cavity to breathe.

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Cavity Wall insulation on 23:13 - Jan 8 with 1608 viewsmax936

Cavity Wall insulation on 22:37 - Jan 8 by perchrockjack

Some are not suitable

Depends on width of cavity


Only minority of houses report problems


Energy efficiency is important and why it's highlighted at sale


Perch its not a minority far from it, as I said the outside brickwork depends on whether its wise to fill the cavity, a proper survey needs to be carried out, when it was all the rage and you had people knocking doors and phone calls preaching the benefits of cavity insulation surveys weren't carried out which is why people are having problems.

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Cavity Wall insulation on 23:13 - Jan 8 with 1608 viewsswanforthemoney

Cavity Wall insulation on 22:25 - Jan 8 by lifelong

I had that type of insulation fitted in my house in the 80’s, had no problem regarding damp but those polystyrene balls can be a pain if they find a means of escape, they blow all over the place.


Too true, the little b@stards turn up everywhere.

I stand in the North Stand

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Cavity Wall insulation on 23:20 - Jan 8 with 1595 viewsmax936

Cavity Wall insulation on 23:13 - Jan 8 by swanforthemoney

Too true, the little b@stards turn up everywhere.


They filled ours with the white wool stuff absorbs water like a paper towel, when they took the stuff out a month ago they had to take a couple of bricks together to get some of it out as it had stuck and formed together and that was right in the spot that blow the plaster off the wall inside, they took the stuff but wouldn't take responsibility for plastering and redecoration, luckily I was able to re plaster myself, we had a decorator in then.

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Cavity Wall insulation on 23:44 - Jan 8 with 1568 viewsLoyal

Cavity Wall insulation on 20:39 - Jan 8 by dickythorpe

Damp is a bad thing. There's been evidence that cavity wall insulation offers no protection against it.


I would give it a massive swerve. Personal experience of this stuff led to a 3 year legal battle as my walls were full of damp afterwards.
Don't do it.

Nolan sympathiser, clout expert, personal friend of Leigh Dineen, advocate and enforcer of porridge swallows. The official inventor of the tit w@nk.
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Cavity Wall insulation on 01:58 - Jan 9 with 1522 viewsDyfnant

Cavity Wall insulation on 23:07 - Jan 8 by max936

Celotex slabs have a foil side to them which is fine, they are used in most if not all new builds these days but cavities are normally 4"now which leaves an air gap between Celotex Slab and inner and outer walls, there are 4" thick slabs which fill the cavity and providing these are correctly fitted shouldn't allow damp through to the inner walls due to their foil backing which obviously face the inner walls, poly balls also work because they don't absorb moisture, they should be fine as long as they're packed tight, but even then it depends on the porosity of the outside walls and again they don't allow the cavity to breathe.


Building regs 6* cavity in Swansea area due to volume of rain

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Cavity Wall insulation on 07:32 - Jan 9 with 1463 viewsgetcarter

Never close your cavity, there are reasons why you have an outer and inner skin.
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Cavity Wall insulation on 07:40 - Jan 9 with 1459 viewsItchySphincter

Cavity Wall insulation on 21:39 - Jan 8 by max936

Ciga is the warranty company, I had a bit of a battle on my hands to get them to sort it, the threat of legal action soon changed their minds, luckily I have a family friend who knows all about the stuff and sent them emails they still denied there was a problem a solicitors leter did the trick.


I raised a case with them, they sent a guy out about a month later, he rocked up and said it shouldn't have gone in and arranged a firm from Swansea to come around about a month after that and suck it out. It was that straight forward. I think there's probably still a bit left in there and they came out with crap like it was probably cause by bits of rubble in my cavities but I know 100% that that's buIIshit.

CLEMENT OUT!
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Cavity Wall insulation on 07:43 - Jan 9 with 1456 viewsItchySphincter

Cavity Wall insulation on 22:14 - Jan 8 by swanforthemoney

I live on the top of the hill in Sketty/glanmor and the 1938 built house is much warmer since I had it done. Especially on windy days, of which we have a lot, what with facing the coast. My insulation is the type that's lots of little polystyrene balls.

My next door neighbour thinks caboty insulation might be the cause of for some dry rot that set in after he had an extension done.

So it can be hit and miss

One thing to find out is what kind of insulation it is. Properties built these days have a 'celotex' (foam slab) type layer attached to the inner skin with a cavity between that and the outer skin. That's perfectly normal.

If everything else is Ok with the property you might want to get a specialist damp survey if you are worried.


Exactly the same sort of house/location as me and a prime candidate for not having it. Caused untold damage to mine, inside and out. Mine was the wool type.

CLEMENT OUT!
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Cavity Wall insulation on 10:15 - Jan 9 with 1409 viewsAustinIsOurHero

Like many have said before, it can result in damp as the insulation essentially bridges the cavity between the inner & outer layers of your house.

CIGA are a body set up by the government to tackle the growing problem of CWI which was not properly installed. If you have a guarantee, CIGA will remove it for you under the terms of the guarantee. (They don't actually do it themselves, they sub-contract to local Companies).

If you don't have a CIGA guarantee, you should probably get a survey done if you're thinking of purchasing - one local Company is particularly good - White Rock Property Care - based in the trading estate by the Liberty (opposite the TA barracks).

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Cavity Wall insulation on 10:50 - Jan 9 with 1394 viewsmonmouth

Thanks folks. This thread is freaking me out now. We had ours done a few years ago with the polystyrene balls. I've had no issues whatsoever, (not seen any real benefit either) but now you are giving me something else to obsess over. Thanks a bunch. Can we have some more stories where it has been fine please! Thanks in advance.

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Cavity Wall insulation on 11:11 - Jan 9 with 1381 viewsAustinIsOurHero

Cavity Wall insulation on 10:50 - Jan 9 by monmouth

Thanks folks. This thread is freaking me out now. We had ours done a few years ago with the polystyrene balls. I've had no issues whatsoever, (not seen any real benefit either) but now you are giving me something else to obsess over. Thanks a bunch. Can we have some more stories where it has been fine please! Thanks in advance.


You will get instances where the CWI is fine & you experience no problems what so ever. The issues arise where the insulation was insufficiently installed by a dodgy (for want of a better word) installer.

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Cavity Wall insulation on 13:03 - Jan 9 with 1345 viewsmax936

Cavity Wall insulation on 11:11 - Jan 9 by AustinIsOurHero

You will get instances where the CWI is fine & you experience no problems what so ever. The issues arise where the insulation was insufficiently installed by a dodgy (for want of a better word) installer.


Correct as far as the ball are concerned, wool is another matter, caused me a right arse ache, Ciga are cheeky bastards as well, as they reckoned that I had interfered with the insulation after me making it clear to the fella that came out that the firm that put it in came back to do work due to damp, they told me it was dirty wall ties, but took some of the wool out which caused even more bother.

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