Tue, 09 Jun 2026 04:29:10 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42014#Comment_42014 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42014#Comment_42014 Thu, 01 Jan 2009 17:09:39 +0000 guyc

Space Combi-Roll Loft Insulation (T)100mm
# Made using recycled glass bottles
# R-value 2.25
# Coverage: 13.89m²
# £13.49

£0.43 per 1m² of 1 R-value


Knauf Space Blanket Loft Insulation (T)150mm
# U-value 0.044
# R-Value 3.40
# Roll Area 1.97m²
# £5.99

£0.89 per 1m² of 1 R-value


B&Q Recycled Plastic Loft Insulation (T)200mm
# Made from 90% recycled plastic bottles
# Totally itch free
# R-value: 5.00
# Coverage: 1.48m²
# £7.49

£1.01 per 1m² of 1 R-value


B&Q Recycled Plastic Loft Insulation (T)150mm
# Made from 90% recycled plastic bottles
# Totally itch free
# R-value: 3.75
# 150mm thick
# Coverage: 1.96m²
# £7.49

£1.01 per 1m² of 1 R-value]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42015#Comment_42015 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42015#Comment_42015 Thu, 01 Jan 2009 17:17:04 +0000 guyc
Black Mountain LOFT SHEEPWOOL INSULATION ROLL 75mm
# sheepwool insulation
# 600 mm x 5 metres
# 75 mm thick
# Coverage: 3m²
# claims U-Value of 0.4 at 100m, so i think that's ...
# 1.875 R-Value
# £20.99

£3.73 per 1m² of 1 R-value]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42020#Comment_42020 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42020#Comment_42020 Thu, 01 Jan 2009 18:25:54 +0000 jamesingram http://www.naturalinsulations.co.uk/index.php?location=home

Guy , some good prices and selection of green insulation from this lot]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42027#Comment_42027 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42027#Comment_42027 Thu, 01 Jan 2009 20:20:16 +0000 guyc
Steicoflex
# ecological wood based insulation made from forest thinning and saw mill residues
# 100mm thick
# £6.83/m2 (+VAT)
# R-value 2.6

£3.02 per 1m² of 1 R-value]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42028#Comment_42028 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42028#Comment_42028 Thu, 01 Jan 2009 20:20:41 +0000 Bluemoon https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42053#Comment_42053 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42053#Comment_42053 Fri, 02 Jan 2009 13:44:12 +0000 jamesingram https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42055#Comment_42055 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42055#Comment_42055 Fri, 02 Jan 2009 13:58:10 +0000 visitor cost / area / R-value is the formula to compute money per square meter per unit of R-value.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42057#Comment_42057 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42057#Comment_42057 Fri, 02 Jan 2009 14:05:57 +0000 guyc
Warmcel100
#recycled newspaper
#100mm thick (lose fill)
#£3.11/m2 for 100mm thick
#Thermal Conductivity 0.040W/mK. at bit better than standard mineral wall ,( 250mm=270mm glass fibre approx.)
#R-value 2.5

£1.24 per 1m² of 1 R-value]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42058#Comment_42058 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42058#Comment_42058 Fri, 02 Jan 2009 14:07:33 +0000 jamesingram https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42068#Comment_42068 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42068#Comment_42068 Fri, 02 Jan 2009 17:35:47 +0000 guyc # a natural insulation made into slabs from wool from British hill sheep
# thermal conductivity 0.039W/mK.
# R-Value 2.56 at 100mm
# 100mm thick £9.36/m2 + VAT

£4.21 per 1m² of 1 R-value]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42370#Comment_42370 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42370#Comment_42370 Tue, 06 Jan 2009 20:15:58 +0000 guyc
Space Combi Loft Insulation - 100mm
# Made using recycled glass bottles
# R-value 2.25
# Coverage: 13.89m²
# £9.99

£0.32 per 1m² of 1 R-value]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42382#Comment_42382 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42382#Comment_42382 Tue, 06 Jan 2009 21:37:43 +0000 jamesingram cheers Jim]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42391#Comment_42391 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=42391#Comment_42391 Tue, 06 Jan 2009 22:11:29 +0000 guyc Posted By: jamesingramdoes the BQ figures includethe BOGOF deals on at the moment?
cheers Jim
Yep I factored that into the calculations, so Homebase is better.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=58457#Comment_58457 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=58457#Comment_58457 Tue, 21 Jul 2009 21:11:45 +0100 guyc

Carbon Zero Loft Insulation - 170mm
# Earthwool zero carbon loft insulation
# R-value 3.85
# Coverage: 8.01m²
# £5

£0.16 per 1m² of 1 R-value]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=94100#Comment_94100 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=94100#Comment_94100 Thu, 11 Nov 2010 22:55:12 +0000 MikeRumney
Thought I'd revive this thread as the homebase/B&Q comparison ... (and the wool/recyc plastic comparison have changed a little, but basic relationships remain the same:
Homebase 170mm plastic Earthwool 170mm by 1140mm by 7030mm (same as coverage given above)... £7 or £3.50 if you can get the BOGOF
Homebase 200mm by 370mm by 4000mm: £6.93
B&Q ditto: £8.38
(Various wools: anything from about £5 to £9 per square metre of 100mm)]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=94103#Comment_94103 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=94103#Comment_94103 Thu, 11 Nov 2010 23:09:02 +0000 MikeRumney http://www.boards.ie/vbulletin/showthread.php?t=2055452637
http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3667
and
http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=772]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=94559#Comment_94559 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=94559#Comment_94559 Tue, 16 Nov 2010 23:18:32 +0000 dave2686 I went to Black Mountain Insulation factory a year ago, thye make recycled plastic insulation, sheep's wool insulation and now hemp insulation. I met the boss call andrew Evens, took time to answer all my questions, he said that Wool is great for buffering condensation compared to mineral wool. The recycled plastic he said was an honest product which wasn't as environmentally friendly but was better than consuming huge energy as per mineral wool. He thought the plastic/wool product wasn't very eco since it was difficult to recycel or compost, he said the B&Q product was just at a price point. Have looked up their product on theor site they complaints about thickness. Suggest speak to Evens and get his nput on comparisons, he may be biased to wool but at least its a start.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=94572#Comment_94572 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=94572#Comment_94572 Wed, 17 Nov 2010 08:57:53 +0000 MikeRumney I didn't realise they did plastic recyc as well ...
I'll ask him about how I might include some plastic to get the cost down as we're already set up for a part-hemp part-wool order anyway.
The plastic may not be recyclable but it it re-useable ... wondering what sort of energy goes into its production.

The thickness might not be an issue as the 170mm is at the best price at the moment, even taking into account that it would effectively be 150mm as it would go into a 150mm gap ... not the sort of compression that would compromise how it works ... just enough to add some grip in a roof slope to work against a "slump" ....?

My main question is really about how it compares to wool as a retainer and releaser of moisture, and if they're broadly similar in this respect, whether they can be used in combination.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=94620#Comment_94620 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=94620#Comment_94620 Wed, 17 Nov 2010 14:03:15 +0000 dave2686 I don't remember too much about their recycled plastic product I think you need to speak to Evens, he did explain for my house (Victorian) he woule recommend wool since it can absorb moisture he said the recycled plastic didn't have this capability. I installed the rpoduct myself, have to say it was the best product I have ever used, Evens told me to tear it across the roll with my hands rather than cut with scisssors, he promised it would tear perfectly, he was right took hardly anytime to install, good luck with your project. Always came out in a bad rash with the glass fibre took ages for it to go had to through my clothes out in the end cos no mater how much the wife washed them it was always there, will use wool on the next project, daughter is planning an kitchen extension!]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=96583#Comment_96583 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=96583#Comment_96583 Tue, 14 Dec 2010 07:58:55 +0000 pmusgrove https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=96589#Comment_96589 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=96589#Comment_96589 Tue, 14 Dec 2010 09:06:13 +0000 martint
B&Q - 3 rolls (single pack) of 170mm for £3.12 - (and if you buy before Thursday evening, there's 15% off)
Wickes - Knauf 150mm space blanket - buy 1 roll get three free (4 rolls for £13.98)]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=96598#Comment_96598 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=96598#Comment_96598 Tue, 14 Dec 2010 11:12:13 +0000 Timber
Delivery is free and you get a gimp suit and mask thown into the deal!

The B&Q deal is also good. I got some at £3 a pack (containing 3 rolls) and at 200 mm thick. Bargin!

Timber]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=96599#Comment_96599 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=96599#Comment_96599 Tue, 14 Dec 2010 11:15:29 +0000 Megacycles
http://www.npower.com/web/diyloftinsulation/index.htm]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=96606#Comment_96606 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=96606#Comment_96606 Tue, 14 Dec 2010 12:08:42 +0000 pmusgrove https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=96628#Comment_96628 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=96628#Comment_96628 Tue, 14 Dec 2010 20:16:06 +0000 Gavin_A



*actually I do have a use for the extra, but I was still fairly amazed.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=96634#Comment_96634 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=96634#Comment_96634 Tue, 14 Dec 2010 22:24:52 +0000 John B https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=197002#Comment_197002 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=197002#Comment_197002 Tue, 25 Feb 2014 19:59:56 +0000 jamesingram https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=197005#Comment_197005 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=197005#Comment_197005 Tue, 25 Feb 2014 20:50:36 +0000 jamesingram Posted By: visitorHi jamesingram,
cost / area / R-value is the formula to compute money per square meter per unit of R-value.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=197006#Comment_197006 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=197006#Comment_197006 Tue, 25 Feb 2014 20:52:10 +0000 jamesingram UPDATED 25/2/14
Warmcel100
#recycled newspaper
#100mm thick (lose fill)
#£2/m2 for 100mm thick
#Thermal Conductivity 0.040W/mK. at bit better than standard mineral wall ,( 250mm=270mm glass fibre approx.)
#R-value 2.5

£0.80 per 1m² of 1 R-value]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=197007#Comment_197007 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=3209&Focus=197007#Comment_197007 Tue, 25 Feb 2014 20:58:02 +0000 jamesingram # U-value 0.044
# R-Value 2.25
# Roll Area 13.89m²
# £16.75 (online seller)

£0.54 per 1m² of 1 R-value]]>