Green Building Forum - How much per m2 for EWI Tue, 19 Dec 2023 08:00:16 +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=208654#Comment_208654 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208654#Comment_208654 Sun, 07 Sep 2014 13:53:16 +0100 Triassic
She lives in a detached stone built, cement rendered, Welsh 'cottage' high up on a hill, which get a good buffeting during the winter from the westerly winds, so can be quite cold. So the guy comes round and started by trying to 'sell' her a biomass boiler as she's on oil, this she declines. However the EWI sounded like a good idea, so she asked for a quote, which she has just received - £21,000. At which point she called me and asked 'is this a good price or just a rip off'?

I must admit I've no idea, but I say I know some people who may know the answer!She's no idea how many square metres the exterior walls measures, but if we start by understanding what is a fair price per m2 for EWI we can do the maths ourselves. So over to you......]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208655#Comment_208655 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208655#Comment_208655 Sun, 07 Sep 2014 14:36:50 +0100 Mike George
The most recent green deal cashback scheme required the homeowner (not some doorstep shyster) to make the application which was worth (before it closed) up to £6000

To answer your question the price for EWI has been until recently between £65 - £85 /m2. With the recent (closed) Green Deal cashback scheme this has inflated up to £150/m2!

To give you an idea of working out costs a small mid terrace around 40-50m2. A semi detached maybe 70-100m2

Much more detail on this in the new Autumn Mag:bigsmile:]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208658#Comment_208658 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208658#Comment_208658 Sun, 07 Sep 2014 16:46:24 +0100 Triassic Posted By: Mike GeorgeBEWARE OF ANYONE OFFERING EWI grants. Talking to me neighbours, people locally are getting at least 1 automated call per day about insulation grants!]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208659#Comment_208659 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208659#Comment_208659 Sun, 07 Sep 2014 16:55:33 +0100 Mike George
A lot of the automated calls may be about cavity insulation rather than EWI


There may be some local/housing association initiatives, and there may still be some ECO funding out there for EWI but I would be very wary if I were you.....

There is some talk of vouchers being offered (illegally) for sale http://www.happyenergy.co.uk/rudd-calls-for-reports-dishonest-gdhif-applications/]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208660#Comment_208660 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208660#Comment_208660 Sun, 07 Sep 2014 16:56:36 +0100 Nick Parsons How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208662#Comment_208662 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208662#Comment_208662 Sun, 07 Sep 2014 17:02:40 +0100 Mike George How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208685#Comment_208685 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208685#Comment_208685 Sun, 07 Sep 2014 23:41:15 +0100 Saint You should be seeing them at between £20/m2 and £30/m2 excluding base rails and beads. So that's for the insulation, adhesive and/or fixings plus basecoat, primer and topcoat render for a specification that will give you 0.30 W/m2K on a 9" solid wall.]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208693#Comment_208693 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208693#Comment_208693 Mon, 08 Sep 2014 08:01:22 +0100 Peter_in_Hungary Here many builders are happy if you get your own materials from one of the many all in package deals for materials around that work out cheaper than buying individual bits from the local builders merchants. I don't know if such options are available in the UK but maybe worth a look.]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208695#Comment_208695 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208695#Comment_208695 Mon, 08 Sep 2014 08:09:13 +0100 Mike George How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208699#Comment_208699 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208699#Comment_208699 Mon, 08 Sep 2014 08:20:26 +0100 Triassic Posted By: Mike Georgehave to use their specified products in most cases in order to get any Warranties... Oh and how much is that worth... probably zero!

Don't you just get that feeling that consumers are being stitched up here in rip off Britain!?]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208708#Comment_208708 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208708#Comment_208708 Mon, 08 Sep 2014 12:02:47 +0100 Mike George ]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208732#Comment_208732 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208732#Comment_208732 Mon, 08 Sep 2014 19:21:03 +0100 chippyclaus How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208739#Comment_208739 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208739#Comment_208739 Mon, 08 Sep 2014 20:57:47 +0100 Mike George How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208755#Comment_208755 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208755#Comment_208755 Tue, 09 Sep 2014 08:30:50 +0100 fostertom How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208765#Comment_208765 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208765#Comment_208765 Tue, 09 Sep 2014 10:38:33 +0100 fostertom How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208769#Comment_208769 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208769#Comment_208769 Tue, 09 Sep 2014 11:06:25 +0100 Mike George Posted By: fostertomAt this stage of the knowledge, I would totally value the mATERIAL SUPPLIER'S TECH REP'S ON-SITE ADVICE AS TO THE PRODUCT COMBINATION (sorry!) that's appropriate to differing circumstances, and to get the fitters and plasterer off on the right foot. Parex in SW England are very good on this - then we buy their product via Encon, and the EPS also via Encon.

I agree with that Tom. But nevertheless material cost inclusive of technical back up does not exceed £30/m2 in my experience -

Some systems much cheaper...... but without the same level of back up]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208771#Comment_208771 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208771#Comment_208771 Tue, 09 Sep 2014 11:09:37 +0100 Mike George How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208785#Comment_208785 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208785#Comment_208785 Tue, 09 Sep 2014 13:15:02 +0100 fostertom
We found a cheap (?) source of EWI stuff (Swindon) http://www.amaroc.co.uk/collections/external-wall-insulation
esp http://www.amaroc.co.uk/products/6mm-window-profile-with-mesh 30 x 2.4m £90.72+VAT, delivery free over £100 = £1.51/m vs SAS 30 x 3m £170+VAT, collected = £2.27/m
which we use a lot of, not just around windows, but at every abutment (unless extremely well sheltered) of render with any solid surrounding material. It provides a clean clear silicone-pointable 2mm gap, in the hope of durably, flexibly withstanding sluicing driving rain forever(!).
Actually I notice the same window beads without mesh is 2/3 the price - is the mesh essential? Is the mesh that's bedded into the base coat enough?]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208788#Comment_208788 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208788#Comment_208788 Tue, 09 Sep 2014 13:46:50 +0100 Triassic Posted By: fostertomBase rails? I could imagine aluminium base rails liberally washed with
Posted By: fostertomAtlantic gales sluice rain upwards even!
would last, what maybe a decade at the most?]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208789#Comment_208789 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208789#Comment_208789 Tue, 09 Sep 2014 13:47:48 +0100 fostertom How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208813#Comment_208813 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208813#Comment_208813 Tue, 09 Sep 2014 17:14:54 +0100 Mike George How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208815#Comment_208815 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208815#Comment_208815 Tue, 09 Sep 2014 17:24:00 +0100 Mike George http://www.directbuildingproducts.co.uk/details3.php?id=1179]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208816#Comment_208816 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208816#Comment_208816 Tue, 09 Sep 2014 17:26:16 +0100 Mike George How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208819#Comment_208819 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208819#Comment_208819 Tue, 09 Sep 2014 18:04:17 +0100 fostertom
Posted By: Mike Georgeroof abutment details where lead flashing is in place
You mean use it as a full-thickness stop bead, so you can still access the lead and the top tile? Why not EWI/render right down onto the top tile? Slide in a flashing extension maybe, under the extg one, but why even that? Internal insulation, whether on same wall face benearth the tile line, or to underside of roof slope, can then connect up with the EWI all bar the tile thickness. If tiling has to be re-done in future, just abandon the top tile course, or rather pull it out and start the new tiling 2/3 of a tile lower down. Any wise comments?]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208820#Comment_208820 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208820#Comment_208820 Tue, 09 Sep 2014 18:10:08 +0100 Mike George
They contend that water can get into the system if the rails are not used - I haven't really challenged them on how it affects the Warranty if we don't use them....]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208821#Comment_208821 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208821#Comment_208821 Tue, 09 Sep 2014 18:12:12 +0100 Mike George How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208826#Comment_208826 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208826#Comment_208826 Tue, 09 Sep 2014 18:23:10 +0100 jamesingram done a couple
I take off lead flashing , lift tiles nearby, cut back battons and EWI board down to lower than roof insulation layer ( or link into warm roof).
cut and stick the tiles back flush with board using undercloaking , then flash up the board and fix top through a drip bead and mesh render down to bead , like you might with sand cement render.
My thought was if the flashing top section decouples with the mesh render slightly it shouldn't be a problem as the overlap makes it water proof and the mesh and drip bead tie the render lip together .
( I think with quality detailing EWI should be around £100m2 ++ )]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208827#Comment_208827 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208827#Comment_208827 Tue, 09 Sep 2014 18:26:19 +0100 fostertom Posted By: Mike GeorgeI can also see the point about water ingressI don't - it's just a tray inviting water to track across it. And a massive thermal bridge. It used to be 'to carry the weight' and/or 'to provide a level starter'. Funny how the story keeps changing, about this profitable system item. EPS doesn't mind being wet, and is almost non-wicking.]]> How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208828#Comment_208828 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208828#Comment_208828 Tue, 09 Sep 2014 18:28:24 +0100 jamesingram How much per m2 for EWI http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208829#Comment_208829 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12534&Focus=208829#Comment_208829 Tue, 09 Sep 2014 18:29:21 +0100 fostertom