Green Building Forum - How much per m2 for EWI Tue, 19 Dec 2023 08:00:20 +0000 http://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208830#Comment_208830 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208830#Comment_208830 Tue, 09 Sep 2014 18:30:31 +0100 Mike George
I agree with the £100 ish /m2 for that level of detail regarding enablement and ancillary works]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208831#Comment_208831 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208831#Comment_208831 Tue, 09 Sep 2014 18:32:17 +0100 Mike George How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208833#Comment_208833 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208833#Comment_208833 Tue, 09 Sep 2014 18:34:42 +0100 jamesingram Probably wont pass suppliers quality assurance but then I'm very much a 'make it up as you go along' type of builder :bigsmile:]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208836#Comment_208836 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208836#Comment_208836 Tue, 09 Sep 2014 18:42:12 +0100 jamesingram Posted By: Mike GeorgeTom, Where thickness affects cost is where there is insufficient eaves overhang/soffit width
yes and soil pipe etc.
Interesting to see on my neighbours house and others in the area (social housing done under ECO) they just stuck 2x45 deg joins and made a kick at the bottom of the soil stack which I was under the impression was a no-no]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208837#Comment_208837 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208837#Comment_208837 Tue, 09 Sep 2014 18:46:05 +0100 Mike George Posted By: jamesingram
Posted By: Mike GeorgeTom, Where thickness affects cost is where there is insufficient eaves overhang/soffit width

yes and soil pipe etc.
Interesting to see on my neighbour house and others in the area (social housing done under ECO) they just stuck 2x45 joins and made a kick at the bottom of the soil stack which I was under the impression was a no-no
Apparently this is acceptable as it seems to be common practice. Drainage work probably outside the scope of any system Warranty and even though contravenes building regulations it is allowed.... Or at least overlooked]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208838#Comment_208838 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208838#Comment_208838 Tue, 09 Sep 2014 18:52:48 +0100 Mike George How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208839#Comment_208839 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208839#Comment_208839 Tue, 09 Sep 2014 18:54:03 +0100 jamesingram ]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208840#Comment_208840 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208840#Comment_208840 Tue, 09 Sep 2014 18:56:03 +0100 Mike George How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208841#Comment_208841 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208841#Comment_208841 Tue, 09 Sep 2014 18:56:52 +0100 jamesingram Posted By: Mike GeorgeIncidentally I don't think I've ever come across the breg specified slow bend in the kind of houses we are talking about (solid walls) And to introduce one can sometimes be impossible as there is simply not the room when linking in to an existing system...
as in existing installation ? most I've dug out in the past for various reasons have been clay long radius bend]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208843#Comment_208843 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208843#Comment_208843 Tue, 09 Sep 2014 19:03:45 +0100 Mike George How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208846#Comment_208846 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208846#Comment_208846 Tue, 09 Sep 2014 19:22:57 +0100 jamesingram ]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208978#Comment_208978 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208978#Comment_208978 Thu, 11 Sep 2014 22:26:02 +0100 Saint How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208986#Comment_208986 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208986#Comment_208986 Thu, 11 Sep 2014 23:06:45 +0100 Mike George How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208999#Comment_208999 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208999#Comment_208999 Fri, 12 Sep 2014 10:07:08 +0100 Ed Davies
By the way, if you find it difficult to copy and paste the contents of a link (eg, the posters' names on this forum) then try holding the alt key down while selecting the text - it's something that's crept into browsers quite recently (last year or two) and can be very handy sometimes.]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=209200#Comment_209200 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=209200#Comment_209200 Tue, 16 Sep 2014 15:12:01 +0100 Saint Posted By: Ed DaviesNote, it's “chippyclaus”

Aaahah...no wonder I was struggling :confused: Thanks Ed :bigsmile: Sad to say I aalso remember when bus conductors were called Clippies]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242329#Comment_242329 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242329#Comment_242329 Mon, 13 Jun 2016 13:36:10 +0100 fostertom
What's latest on rendered EPS EWI £/m2 all-in, assuming a bungalow needing minimal scafolding, lots of space around, generous extg eave overhang, ignoring rwp etc relocation?

While at it, split the cost into a) everything up to ready-for-basecoat, and b) the whole render finish.]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242335#Comment_242335 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242335#Comment_242335 Mon, 13 Jun 2016 14:05:16 +0100 Peter_in_Hungary
Material prices may be a bit different, but a lot is imported here so not much difference and I don't see the labour should be any different as I quote hours not price.]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242362#Comment_242362 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242362#Comment_242362 Mon, 13 Jun 2016 19:27:21 +0100 fostertom Any more?]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242366#Comment_242366 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242366#Comment_242366 Mon, 13 Jun 2016 20:40:02 +0100 owlman My bungalow N wall about 17M long has few intrusions, only one window, with a generous soffit. The other three aspects are far too complex in terms of windows doors etc. to make it viable. Plus one of those three aspects is road facing, in a conservation village so brick it has to stay.]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242367#Comment_242367 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242367#Comment_242367 Mon, 13 Jun 2016 20:48:19 +0100 Nick Parsons How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242368#Comment_242368 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242368#Comment_242368 Mon, 13 Jun 2016 20:49:05 +0100 fostertom As it's nearly windowless, all the better in terms of improvement per £ spent and decrease of £ on fuel forever more;
however even if the latter is a good and worthwhile saving it'll still be small relative to the £ on fuel still being spent thro the other, windowed elevations.]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242371#Comment_242371 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242371#Comment_242371 Mon, 13 Jun 2016 21:19:07 +0100 Ed Davies Posted By: owlmanWould there be any point/benefit in a partial EWI?Simplistically, adding insulation to a bit of wall has as much or as little benefit in terms of energy saved whatever the level of insulation on other bits of the house.

Reality is more complicated, of course. The insulation might allow higher indoor temperatures (likely good in themselves for comfort or health) but which would cause increased losses through the other walls but, if the heating is the same, then less loss overall. Also, the EWI'd wall would likely be warmer on the inside meaning that any condensation would likely be concentrated on the other walls which might be a problem.

ETA: but what if it's a cavity wall? I'm thinking of thermal bypass round the corners.]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242375#Comment_242375 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242375#Comment_242375 Mon, 13 Jun 2016 22:27:37 +0100 fostertom Posted By: Ed Daviescause increased losses through the other wallsI don't think so in abs terms, unless mean internal temp is higher. But yes in the %age split of where the remaining loss goes out.
Gd points about condensation and bypass via cavity walls.]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242376#Comment_242376 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242376#Comment_242376 Mon, 13 Jun 2016 23:32:11 +0100 Ed Davies Posted By: fostertomI don't think so in abs terms, unless mean internal temp is higher.Yes, that's what I meant. I've edited the post to make it a bit clearer.]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242379#Comment_242379 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242379#Comment_242379 Tue, 14 Jun 2016 09:34:51 +0100 gravelld
Is there a resource for building details for incremental improvements in the fabric? It would cover both making the best of the improvement, plus also how to cater and allow for future upgrades.

An example may be only insulating a subset of the CWs like here. Or maybe how to EWI but not replace joinery and how to both maximise performance and make it easier to replace joinery later. Or how to treat eaves, with a view to insulating the roof later, but also make the most of the insulation reducing bridging e.g. joining to cavity and or existing loft floor insulation]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242669#Comment_242669 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242669#Comment_242669 Sun, 19 Jun 2016 11:15:24 +0100 Victorianeco
Looks like I'll just IWI but would be handy to know comparison costs....]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242675#Comment_242675 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242675#Comment_242675 Sun, 19 Jun 2016 11:37:02 +0100 Nick Parsons
That does not seem to compare too well with Peter-in-Hungary's £8.90/m2!!!!]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242677#Comment_242677 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242677#Comment_242677 Sun, 19 Jun 2016 12:22:42 +0100 fostertom
Labour I thought £15/m2 to fix, £30/m2 to render, assuming 4x higher hrs/m2 than Peter_in_Hungary above!
That's 1.5hrs/m2 @£10 to fix (incl foaming all joints) and 2.5hrs/m2 @£12 to render (incl scrupulous bead fixing/mastic around windows).
What I've seen of everyday EWI in e.g rural Estonia is incredibly rough and ready!

VAT extra to all the above.]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242706#Comment_242706 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242706#Comment_242706 Sun, 19 Jun 2016 18:32:13 +0100 Victorianeco
That sounds more realistic... If a house is say 80m2 that's two men for a 40hr full week. I think mine was done in about that time scale.

So say £12 per m2 labour
£40 per m2 materials

So circa £50 per m2 more realistic?]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242707#Comment_242707 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=242707#Comment_242707 Sun, 19 Jun 2016 19:10:13 +0100 fostertom