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?

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.....

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

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

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]

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.

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!

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.

Cheers, Mike! B&Q have an offer on it at the min, might take them up on it - £200.

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

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.

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.

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]