JoelP
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| posted on 30/11/08 at 06:48 PM |
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Cavity wall insulation
My kitchen is 12 degrees!  So obviously im thinking about insulation. Question is, what happens when you have holes in the inner wall that you cant
get to to block? Would all the gubbins fall out?
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BenB
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| posted on 30/11/08 at 06:54 PM |
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If you're thinking a blown / pressure-fed insulation then yes.... you'ld need to seal them before putting it in...
First job usually though is to work out how / where you're loosing heat.
Screwfix have some very nice thin insulating material which is equivalent to 50mm polystyrene.. Cheap too....
I'm buying some tommorow to make an insulating bag to go round my homebrew mash-tun
40 pints of London Pride anyone?!?!  Or should I make ESB? Or maybe Broadside... Or maybe Marstons Oyster. Or maybe Black Sheep. Or maybe Old
Peculiar....
Choice, choices.....
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Antnicuk
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| posted on 30/11/08 at 06:55 PM |
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i dont know a lot about it, i had my house done, there are 2 or 3 different types of filling i think, the one i had was like rock wool in small bits
so i dont think it would fall out but you may have to block it while they blow it in as it may just blow out again. One of the others is like
polystyrene balls so that may be out of the question for you.
HTH
600 BHP per ton, Stylus Brought back from the dead! Turbo Rotary Powered!
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repper
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| posted on 30/11/08 at 06:55 PM |
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just had solawall to do my house on friday had same prob wear the old boiler was
i showed them be for thay started it and thay put a produced a bit like a chimne sweeps bsush down as far as thay could then one turned it on slowly
and the other chap stayed in the house to make shore it dint come in
was vear in prest tuuck 2hr ish and it made lodes off difrence even tured the rad off in the kitchen
but they did make a right mess in my garage just glad i put dust seets all over my car and tool box
well worth £200 a recomend it
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blakep82
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| posted on 30/11/08 at 07:08 PM |
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our walls are filled with those little polystyrene balls. was done about 20 years age, don't know how many are left though. if you make a hole
in the wall for something they all come pouring out
[Edited on 30/11/08 by blakep82]
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PAULD
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| posted on 30/11/08 at 07:13 PM |
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Had mine done recently with rockwool. I forgot to fill a couple of interior wall holes, but it didn't blow through at all. Shone a torch in and
there the stuff was, nicely filled.
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JoelP
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| posted on 30/11/08 at 07:16 PM |
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i remember leaving a wastepipe hole unblocked when i put the kitchen in  now i have a breeze over the washing machine Might whip the kitchen out
and sort it all at once
Cheers for the help guys!
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MikeR
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| posted on 30/11/08 at 10:39 PM |
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They tend not to do the little balls due to the problem with them all falling out. If you do get it done (and i'd recommend it, had mine done)
get rockwool.
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JoelP
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| posted on 30/11/08 at 10:49 PM |
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Cheers, Mike! B&Q have an offer on it at the min, might take them up on it - £200.
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SteveWalker
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| posted on 30/11/08 at 11:03 PM |
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And make sure that you know where they're injecting it - one small section of my wall is only single skinned ... the other side is the
electricity box! Filled solid!
SteveW
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craig1410
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| posted on 1/12/08 at 12:10 AM |
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Hi guys,
I've always been under the impression that this stuff isn't a good idea for relatively modern houses which have been built with a certain
standard of wall insulation already. The wall cavity is there for a reason and bridging it with any sort of material can allow moisture to cross the
cavity and cause damp. I know, in practice dampness crossing the rockwool/poly beads shouldn't be a huge problem but all the same I didn't
want to take the chance.
What are your thoughts? Any builders, architects or civil engineers care to comment?
Cheers,
Craig.
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kj
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| posted on 1/12/08 at 08:00 AM |
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It's best to block any holes even with a blob of cement. 3 products we use Rockwool, superfil which is like cotton wool (best way to explaine
it) and Ecobead which is poly beads and as injected with a pva type glue which bonds the bead so if you remove windows etc it doeas not fall out.
With the way fuel bils are it should pay back in about a year. Just make sure they do the nesaceray checks before and after the instalation and the
surveyor should have done checks to make sure no damp was in the cavity before any work was planned.
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Peteff
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| posted on 1/12/08 at 10:48 AM |
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When my daughter's house was done they forgot the bathroom vent and it had a stalactite growing out of it when they went in after. We
don't have cavity walls so can't do it here. The stuff they used was just like the foam used for gap filling like people have suggested
for seat making.
[Edited on 1/12/08 by Peteff]
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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