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Author Topic: loft insulation  (Read 1577 times)

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sir moanalot

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loft insulation
« on: 05 March 2011, 10:10:20 »
finally got round to clearing out the loft to get it insulated (although all the crap up there probably acted as insulation anyway !!)
i went online to wicks and found buy one get 3 free deal so went for that, it went down well and took me a couple of hours- as my loft is huge. im already noticing a difference by not having the heating on for long periods. :y note if you are a british gas dual fuel customer you can get it done for free !!
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I_want_an_Omega

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Re: loft insulation
« Reply #1 on: 05 March 2011, 11:25:02 »
Did you have none at all in it?
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pscocoa

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Re: loft insulation
« Reply #2 on: 05 March 2011, 13:01:53 »
Quote
finally got round to clearing out the loft to get it insulated (although all the crap up there probably acted as insulation anyway !!)
i went online to wicks and found buy one get 3 free deal so went for that, it went down well and took me a couple of hours- as my loft is huge. im already noticing a difference by not having the heating on for long periods. :y note if you are a british gas dual fuel customer you can get it done for free !!

Yes - just had mine done - all tanks and pipes relagged, had about 3 inches of loft insulation before now 2 thick extra layers so maybe 10 inches or so.

Clearing loft was a nightmare- starting to assess what goes back in after first cull we did a couple of weeks ago. What to do with my vinyl collection which has not seen light of day for over 20 years?

Also had cavity wall insulation done.
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Chris_H

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Re: loft insulation
« Reply #3 on: 05 March 2011, 13:17:03 »
Current recommendation is 10 inches which is a lot more than used to be, so more than most people have.

My mother (91 yrs old) got Social Services saying she could have it done under a Government grant system.  The guys came round, said we'd need to clear the loft space including taking up the 8ftx2ft t&g chipboard.  Muggins did it, and when they rang to make an appointment, mother forgot who they were and sent them packing.  Now far less insulation than before we started the process!!!

It's worth noting that most lofts can't be boarded if you have 10inches of insulation sitting uncompressed.
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pscocoa

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Re: loft insulation
« Reply #4 on: 05 March 2011, 13:35:46 »
If there is insulation under the laid boards they can /will lay new insulation over the top - it is all insulation after all - even the crap stuff you put up there. I left a central section with just a few inches insulation so did not have to raise boards but this will be storage/access area.
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Chris_H

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Re: loft insulation
« Reply #5 on: 05 March 2011, 14:23:31 »
Quote
If there is insulation under the laid boards they can /will lay new insulation over the top - it is all insulation after all - even the crap stuff you put up there. I left a central section with just a few inches insulation so did not have to raise boards but this will be storage/access area.
It's a bit doubtful that you can do much in a loft with insulation on top of the boards?
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Shackeng

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Re: loft insulation
« Reply #6 on: 05 March 2011, 14:23:47 »
I have two lofts, one of which is the boarded storage area, I'm thinking of putting Celotex or Kingspan between the rafters to make up for lack of insulation.
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Chris_H

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Re: loft insulation
« Reply #7 on: 05 March 2011, 14:36:09 »
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I have two lofts, one of which is the boarded storage area, I'm thinking of putting Celotex or Kingspan between the rafters to make up for lack of insulation.
Sounds like a good idea.  Insulating a loft at floor level not only makes it inhospitable to use but makes cold water storage more vulnerable.

Is there a down-side to doing the rafters?
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Shackeng

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Re: loft insulation
« Reply #8 on: 05 March 2011, 14:41:35 »
Quote
Quote
I have two lofts, one of which is the boarded storage area, I'm thinking of putting Celotex or Kingspan between the rafters to make up for lack of insulation.
Sounds like a good idea.  Insulating a loft at floor level not only makes it inhospitable to use but makes cold water storage more vulnerable.

Is there a down-side to doing the rafters?

As long as there is sufficient air space above the bats to allow ventilation (in case of condensation) it is OK. There is probably a thread on DIYnot.com on this subject. :y
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sir moanalot

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Re: loft insulation
« Reply #9 on: 05 March 2011, 18:22:36 »
i had a thin sliver up there but with all the moving about and rewiring it had all got moved and thinned out, nice and warmer now !! :y
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Marks DTM Calib

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Re: loft insulation
« Reply #10 on: 05 March 2011, 19:02:16 »
I have 250mm under the boarded bits and 300mm elsewhere.

B&Q keep seeling the stuff for 3 pounds a roll so I just keep chucking it in!
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I_want_an_Omega

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Re: loft insulation
« Reply #11 on: 05 March 2011, 23:03:39 »
Quote
I have two lofts, one of which is the boarded storage area, I'm thinking of putting Celotex or Kingspan between the rafters to make up for lack of insulation.

Excellent stuff, but blooming expensive  :o
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Radar

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Re: loft insulation
« Reply #12 on: 05 March 2011, 23:36:24 »
I fixed some wooden planks to make a raised storage area for part of the loft area a couple of years ago - Must admit my back was not the best afterwards. Also had to put some ceramic pots around the downlighters.

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Vamps

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Re: loft insulation
« Reply #13 on: 06 March 2011, 00:26:28 »
I have some old insulation and a fully boarded loft and several layers of junk stored on top, can you really better insulation than a layer followed by a boarded floor????
« Last Edit: 06 March 2011, 00:27:16 by floodm »
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Marks DTM Calib

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Re: loft insulation
« Reply #14 on: 06 March 2011, 10:49:09 »
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I have some old insulation and a fully boarded loft and several layers of junk stored on top, can you really better insulation than a layer followed by a boarded floor????

Yes, big time.

The boarding is a pretty poor insulator
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