epsilonGreedy Posted January 15, 2020 Share Posted January 15, 2020 (edited) Just wondering if £5.78 + VAT per m2 is a decent quote for glass mineral wool full-fill cavity batts? p.s. (Supply to site, not fitting). Edited January 15, 2020 by epsilonGreedy Link to comment Share on other sites More sharing options...
James94 Posted January 15, 2020 Share Posted January 15, 2020 Seems ok to me, I’ve been paying £6.10 + VAT per m2 for DriTherm 32. 1 Link to comment Share on other sites More sharing options...
PeterW Posted January 15, 2020 Share Posted January 15, 2020 Expensive .... No.1 - I’m assuming that’s Superglass and it’s horrid to work with No.2 - Earthwool is better and cheaper https://www.wickes.co.uk/Knauf-Earthwool-100mm-Dritherm-Cavity-Slab-Insulation-455-x-1200mm-4-37m2-Pack-8/ £4.19 + VAT per swim from Wickes, free delivery over £75 so it’s a no brainier. 2 minutes ago, James94 said: Seems ok to me, I’ve been paying £6.10 + VAT per m2 for DriTherm 32. That is very expensive - list price is only £6.35 for DriTherm 37 Link to comment Share on other sites More sharing options...
epsilonGreedy Posted January 15, 2020 Author Share Posted January 15, 2020 Hmm the Drytherm 37 at Wicks is on for a special price at the moment. Drytherm 32 is an extra £8 per pack at Wicks, I also have nagging doubts how they squeeze the extra u-value performance out of the same basic material. I should think some more about this order because I need 260 m2 of the stuff. Link to comment Share on other sites More sharing options...
epsilonGreedy Posted January 15, 2020 Author Share Posted January 15, 2020 27 minutes ago, PeterW said: Expensive .... No.1 - I’m assuming that’s Superglass and it’s horrid to work with No.2 - Earthwool is better and cheaper Not sure about the details of the material, here is the product page. https://www.isover.co.uk/products/cws-32 Have to admit the specifics of "earth wool", "superglass" and "glass mineral wool" just go over my head at the moment. Link to comment Share on other sites More sharing options...
nod Posted January 15, 2020 Share Posted January 15, 2020 I used Buildbase For a large order the rep blew everyone else out of the water Including Encon As with the slates they stored it at the branch and let me take it as I needed it Link to comment Share on other sites More sharing options...
A_L Posted January 15, 2020 Share Posted January 15, 2020 7 minutes ago, epsilonGreedy said: I also have nagging doubts how they squeeze the extra u-value performance out of the same basic material. There is an optimum relationship between density, size of air spaces and thermal resistance. You should find that 0.032 has a greater density and smaller/more air spaces than 0.037 Link to comment Share on other sites More sharing options...
PeterW Posted January 15, 2020 Share Posted January 15, 2020 25 minutes ago, epsilonGreedy said: Hmm the Drytherm 37 at Wicks is on for a special price at the moment. Drytherm 32 is an extra £8 per pack at Wicks, I also have nagging doubts how they squeeze the extra u-value performance out of the same basic material. I should think some more about this order because I need 260 m2 of the stuff. DriTherm 37 is the industry standard hence why it’s cheaper. 260sqm is 60 packs and I’ve just been quoted £1180 delivered plus VAT for DriTherm 37 1 Link to comment Share on other sites More sharing options...
MikeGrahamT21 Posted January 16, 2020 Share Posted January 16, 2020 18 hours ago, epsilonGreedy said: Hmm the Drytherm 37 at Wicks is on for a special price at the moment. Drytherm 32 is an extra £8 per pack at Wicks, I also have nagging doubts how they squeeze the extra u-value performance out of the same basic material. I should think some more about this order because I need 260 m2 of the stuff. The 32 is a denser product, and IMO a much nicer one to work with, cuts nicer 1 Link to comment Share on other sites More sharing options...
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