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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Using foam offcuts for insulation?
I have many binbags and boxes of kingspan offcuts and expanding foam
trimmings, Rather than bin them could I use them for insulation under floors? But loosefill insulation comes in round granules, wouldnt air currents make my offcut idea a waste of time? Even if I cover it with rockwool? What if I sandwich it in rockfill? I hate throwing things away! [george] |
#2
Posted to uk.d-i-y
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Using foam offcuts for insulation?
On May 17, 12:18*am, george - dicegeorge
wrote: I have many binbags and boxes of kingspan offcuts and expanding foam trimmings, Rather than bin them could I use them for insulation under floors? But loosefill insulation comes in round granules, wouldnt air currents make my offcut idea a waste of time? Even if I cover it with rockwool? What if I sandwich it in rockfill? I hate throwing things away! [george]Ads not by this site Depending on how big the bits are, you could "embed" them in canned foam. |
#3
Posted to uk.d-i-y
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Using foam offcuts for insulation?
On 17/05/2013 00:18, george - dicegeorge wrote:
I have many binbags and boxes of kingspan offcuts and expanding foam trimmings, Rather than bin them could I use them for insulation under floors? But loosefill insulation comes in round granules, wouldnt air currents make my offcut idea a waste of time? Even if I cover it with rockwool? What if I sandwich it in rockfill? I hate throwing things away! [george] Handy in the garden. I have a couple of "tender" perennials that have survived the winter outdoors thanks to closed cell foam |
#4
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Using foam offcuts for insulation?
On Fri, 17 May 2013 00:18:04 +0100, george - dicegeorge wrote:
I have many binbags and boxes of kingspan offcuts and expanding foam trimmings, Sounds like small bits, chuck 'em. If there are enough large bits of kingspan I guess you could "crazy pave" 'em into a space held together with low expansion expanindg foam. Shouldn't think you have enough "waste" to be really useful though, not unless there was something very awkward about the spaces you were insulating and didn't use the larger offcuts within that that job. -- Cheers Dave. |
#5
Posted to uk.d-i-y
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Using foam offcuts for insulation?
On Friday, May 17, 2013 12:18:04 AM UTC+1, wrote:
I have many binbags and boxes of kingspan offcuts and expanding foam trimmings, Rather than bin them could I use them for insulation under floors? But loosefill insulation comes in round granules, wouldnt air currents make my offcut idea a waste of time? Even if I cover it with rockwool? What if I sandwich it in rockfill? I hate throwing things away! [george] You can use it. IIRC loosefill gets around half the insulation value of solid. You might fix that by mixing in a little loosefill fibreglass insulation. NT |
#6
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Using foam offcuts for insulation?
On 17/05/2013 00:18, george - dicegeorge wrote:
I have many binbags and boxes of kingspan offcuts and expanding foam trimmings, Rather than bin them could I use them for insulation under floors? But loosefill insulation comes in round granules, wouldnt air currents make my offcut idea a waste of time? Even if I cover it with rockwool? What if I sandwich it in rockfill? I hate throwing things away! Granulate it and then set it in expanding foam ;-) -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#7
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Using foam offcuts for insulation?
On 17/05/13 07:42, harry wrote:
On May 17, 12:18 am, george - dicegeorge wrote: I have many binbags and boxes of kingspan offcuts and expanding foam trimmings, Rather than bin them could I use them for insulation under floors? But loosefill insulation comes in round granules, wouldnt air currents make my offcut idea a waste of time? Even if I cover it with rockwool? What if I sandwich it in rockfill? I hate throwing things away! [george]Ads not by this site Depending on how big the bits are, you could "embed" them in canned foam. But then if any water gets down there from roof leaks or plumbing leaks it would stay there and rot the timbers, but with rockwool and loose fill there'd be telltale black mould on the ceiling below. I am experiemnting with vertical lines of plasterboard between the kingspan so any leaks will soak through and show up before rotting the timbers!¬ [george] |
#8
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Using foam offcuts for insulation?
On 17/05/13 13:28, John Rumm wrote:
On 17/05/2013 00:18, george - dicegeorge wrote: I have many binbags and boxes of kingspan offcuts and expanding foam trimmings, Rather than bin them could I use them for insulation under floors? But loosefill insulation comes in round granules, wouldnt air currents make my offcut idea a waste of time? Even if I cover it with rockwool? What if I sandwich it in rockfill? I hate throwing things away! Granulate it and then set it in expanding foam ;-) But then if any water gets down there from roof leaks or plumbing leaks it would stay there and rot the timbers, but with rockwool and loose fill there'd be telltale black mould on the ceiling below. I am experimenting with vertical lines of plasterboard between the kingspan so any leaks will soak through and show up before rotting the timbers!¬ [george] |
#9
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Using foam offcuts for insulation?
On 17/05/13 13:28, John Rumm wrote:
On 17/05/2013 00:18, george - dicegeorge wrote: I have many binbags and boxes of kingspan offcuts and expanding foam trimmings, Rather than bin them could I use them for insulation under floors? But loosefill insulation comes in round granules, wouldnt air currents make my offcut idea a waste of time? Even if I cover it with rockwool? What if I sandwich it in rockfill? I hate throwing things away! Granulate it and then set it in expanding foam ;-) I'm using an Aldi garden shredder to granulate the kingspan offcuts (bought it years ago but never used it in the garden cos it seemed too puny) Now I've worked out its maximum input chunk size its working well. [g] |
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