Green Building Forum - Hello from Malton Tue, 19 Dec 2023 04:58:24 +0000 http://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255661#Comment_255661 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255661#Comment_255661 Mon, 13 Mar 2017 15:13:46 +0000 peacebabe68 ]]> Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255662#Comment_255662 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255662#Comment_255662 Mon, 13 Mar 2017 15:42:08 +0000 fostertom Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255671#Comment_255671 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255671#Comment_255671 Mon, 13 Mar 2017 17:31:24 +0000 Peter_in_Hungary
What is your target heat load? and what thickness EWI are you planning, there is not much difference in cost between 100mm and 200mm beyond the extra cost of 100mm of EPS

If you can get your heat load down enough it doesn't matter much what sort of heating you have - best case a fan heater for a couple of weeks a year !!]]> Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255672#Comment_255672 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255672#Comment_255672 Mon, 13 Mar 2017 17:48:29 +0000 peacebabe68
I am learning fast about the biomass situation. It has taken me some months to even get people to quote and there seemed to be quite a number of cowboys out there. So far quotes came in at 20 - 25K :surprised: My regular plumber said he felt that biomass was going to be an expensive option and also that eventually we would be shipping them in from Russia to keep up with demand..then I read the BBC article and thought if we insulate well (cant get passivhaus level but can get as close as we can) then the heating requirement will be small. I am now trying to find a company to install the EWI and render. Have found a company called wetherby render systems who i am waiting for their quote and also yorkshire specialist rendering. They quoted £11700 for the house insulation plus render. He reckoned £65 a square metre on 180m2 but i thought that seemed cheap per sq mtre. We have to work out how we extend the roofing to overhang the render but there is no reason why we cant make it 200mm.

Must have done my research well on here as waiting for a quote for the windows from Russell Timbertech. I am also waiting for Polish Interiors, fine aluminium, reynaers, ,munster joinery, vrogum. Had received one from Velfac £45k :shocked::shocked::shocked: and i also read on here that the render has to go on before the windows with Velfac. Currently in a 17th century farmhouse single glazed sash windows so anything will seem like a dream!!]]> Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255673#Comment_255673 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255673#Comment_255673 Mon, 13 Mar 2017 18:33:33 +0000 Gotanewlife Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255677#Comment_255677 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255677#Comment_255677 Mon, 13 Mar 2017 20:09:28 +0000 Ed Davies Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255678#Comment_255678 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255678#Comment_255678 Mon, 13 Mar 2017 20:14:20 +0000 peacebabe68 Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255679#Comment_255679 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255679#Comment_255679 Mon, 13 Mar 2017 21:22:57 +0000 djh
Extending the overhang is reasonably straightforward. Competent builders should be able to explain.

£6,500 for 4 kWp is a top of the range price for PV panels I think.]]> Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255680#Comment_255680 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255680#Comment_255680 Mon, 13 Mar 2017 21:35:12 +0000 peacebabe68 Showing 50mm on the walls and 25mm to the reveals of windows and doors.

I have spoken with Kingspan the insulation people and they said:

Existing wall U-value is approx 0.54W/m2K
With 50mm insulation this falls to 0.23W/m2K
With 60mm insulation this falls to 0.2W/m2K

Building Control would be looking for 0.3W/m2K]]> Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255687#Comment_255687 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255687#Comment_255687 Mon, 13 Mar 2017 22:27:18 +0000 Peter_in_Hungary The figures quoted sound like it is the phenolic insulation, otherwise I don't think that the insulation value would be so good with only 50mm. Generally speaking it is cheaper to use EPS and have a thicker amount (unless there is a good reason that requires the insulation to be as thin as possible).

Is the Kingspan insulation vapour permeable?

Building Control would be looking for 0.3W/m2K - yes but that's nothing to be proud of !!!]]> Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255692#Comment_255692 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255692#Comment_255692 Tue, 14 Mar 2017 06:09:36 +0000 peacebabe68 Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255695#Comment_255695 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255695#Comment_255695 Tue, 14 Mar 2017 08:18:23 +0000 Nick Parsons Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255698#Comment_255698 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255698#Comment_255698 Tue, 14 Mar 2017 09:14:59 +0000 Peter_in_Hungary Posted By: peacebabe68That is the thickness the architect recommended.
Generally speaking architects will only specify what will pass building regs. unless asked to do otherwise.(The famous architect of this parish is an exception)

Posted By: peacebabe68We have no over hang whatsoever on the roof so there would need to be some adjustment to that.

If you are going to increase the overhang of the roof anyway then it will make little difference how much increase you put on.

Get some other quotes using standard EPS and platinum (graphite) EPS, look at the relative costs and how much overhang is needed in each case. All other things being equal i.e. you need to increase the overhang anyway, I would expect standard EPS to be the cheapeest. IMO a target of 0.1.5W/m2K and 0.2W/m2K would be reasonable targets against which to get quotes.

Posted By: peacebabe68It's a cavity wall that has already been insulated with foam.

Foam filled cavities do not have a good reputation. Like any cavity fill much depends upon the quality of workmanship - and it is very difficult to check after the event. About the only way I know to check is to wait for a cold morning and heat the house up lots(over night) and then take pictures with a thermal camera.]]> Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255704#Comment_255704 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255704#Comment_255704 Tue, 14 Mar 2017 10:59:27 +0000 peacebabe68 Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255705#Comment_255705 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255705#Comment_255705 Tue, 14 Mar 2017 11:12:07 +0000 fostertom
Remove the existing and fit the new windows further outboard, in the EWI zone. Lovely new deep internal window cills. Much advice on here as to how to mount the new windows. Admittedly this only becomes completely uncompromised when the EWI is a lot thicker than you envisage - 150mm minimum, 200 better, or even whatever PassiveHouse Enerphit standard demands - why not? - but you're contemplating eaves extension to make that thickness possible. Again, as djh says, lots of advice on here about extending eaves.

For EWI supply-only, Parex is my vote - at least in SW England their regional Rep is absolutely top notch, visits, sorts out products reqd for the particular situation, gives advice/guidance to your local chippy/handyman (fitting the EPS) and plasterer (rendering) - all easy work, specialists no longer necessary.]]> Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255708#Comment_255708 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255708#Comment_255708 Tue, 14 Mar 2017 12:12:43 +0000 peacebabe68 Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255711#Comment_255711 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255711#Comment_255711 Tue, 14 Mar 2017 12:47:40 +0000 Peter_in_Hungary Posted By: peacebabe68The cavity wall insulation was done before we bought the house and I dont rate it anyway.
If you can check to make sure you don't have a gale still blowing through the cavity (check on a windy day!!)

Posted By: peacebabe68Is there a way to work out the material costs to heating running costs?
Do you mean here the material cost of the insulation to heating cost? If so you will spend on the insulation once and the heating cost every year so you are looking at the ROI. You will need to know what your heat load is after the insulation works and then translate this into the typical annual heating cost - then you can see the pay back time for the insulation spend (ROI) You will need to know your heating load anyway so that you can size the CH.

Posted By: peacebabe68Removing biomass from the equation puts us back to oil fired boiler or ASHP

Don't forget LPG. Gas boilers are much cheaper than oil boilers and are more main stream which makes availability and servicing easier. If you get your heat load down enough with the insulation then any variation in the fuel cost is dwarfed by the extra cost of an oil boiler vs. a gas boiler. Other factors also kick in as the regs for oil storage are easier than for gas tanks - but then if the heating demand is low enough a couple of large propane tanks would do which as portable exchange tanks I believe have different storage regs to a fixed refillable tank.]]> Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255712#Comment_255712 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255712#Comment_255712 Tue, 14 Mar 2017 12:53:07 +0000 djh Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255714#Comment_255714 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255714#Comment_255714 Tue, 14 Mar 2017 13:10:37 +0000 peacebabe68 Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255717#Comment_255717 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255717#Comment_255717 Tue, 14 Mar 2017 13:36:44 +0000 djh
Bifold doors are difficult to make and keep airtight over the long term, though I think there are now some specialised suppliers. Sliding seals are inherently more difficult than compression seals.]]> Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255718#Comment_255718 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255718#Comment_255718 Tue, 14 Mar 2017 13:37:05 +0000 Peter_in_Hungary Posted By: peacebabe68The architect has said that the house to be insulated /rendered is 70m2
Posted By: peacebabe68in the house there are 13 windows, 3 doors,

Posted By: peacebabe68There are also 4 rooflights

That seems like a lot of windows and doors for a 70m2 house
Are the roof lights must have or nice to have 'cos they are not very efficient at keeping the heat in!]]> Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255721#Comment_255721 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255721#Comment_255721 Tue, 14 Mar 2017 14:37:08 +0000 peacebabe68 Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255745#Comment_255745 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255745#Comment_255745 Tue, 14 Mar 2017 17:33:52 +0000 fostertom Posted By: Peter_in_Hungary
Removing biomass from the equation puts us back to oil fired boiler or ASHP

Don't forget LPGDon't forget with PassiveHouse or close, you won't need a space-heating system at all - just fan heater maybe. Save your equipment money - spend it on the fabric.]]> Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255746#Comment_255746 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255746#Comment_255746 Tue, 14 Mar 2017 17:38:04 +0000 fostertom Posted By: djhIt's quite common to insulate and render over the outer part of the frameIn fact so massively beneficial that it's essential!

To be clear, this means bringing insulation across to master the outside face of the frame jambs and head (usually not possible at the cill), as far inboard as the hinge-pin (or equiv) line will permit. Reduce the area of poor-insulator frame that 'sees' outside air. You can do the same trick inboard as well.]]> Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255747#Comment_255747 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255747#Comment_255747 Tue, 14 Mar 2017 17:39:17 +0000 fostertom Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255753#Comment_255753 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255753#Comment_255753 Tue, 14 Mar 2017 18:13:22 +0000 djh Posted By: fostertomTo be clear, this means bringing insulation across to master the outside face of the frame jambs
I think some Velfac windows don't have any exposed frame that can be insulated over. That may be one reason they are fussy about installation order.]]> Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255763#Comment_255763 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255763#Comment_255763 Tue, 14 Mar 2017 20:08:31 +0000 gravelld
You're doing the right thing - investing in the building's fabric.

I suggest going for EPS as the insulant. Kingspan is for millionaires, and is it even vapour permeable?

Have you considered carrying the insulation over the DPC and to the foundations? Massive benefits from this, not least avoiding the disruption of laying floor insulation.

Regards your architect, prepare for many battles with many professionals. The stuff discussed on this forum is not "normal". But it is the "Right Thing To Do".]]> Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255765#Comment_255765 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255765#Comment_255765 Tue, 14 Mar 2017 20:33:26 +0000 peacebabe68
My architect is lovely. Very happy to run along with any of these ideas. Known him years so will have no troubles there thankfully. I

The house is on top of a hill which falls away quite steeply so there are a number of changing levels. Difficult to insulate everywhere over DPM but where we can we will. Currently the concrete path has been laid higher than the DPM so that's gotta come up anyway. Obvioulsy we have to make decisions based on what's ideal, what we want to achieve and how much it will all cost! So far i am looking at a spreadsheet with numbers adding up to around £200k! We did buy the house knowing it had a lot of work to do. In many ways a lot of fun...In other ways i cant wait to get to a normal life again.]]> Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255767#Comment_255767 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255767#Comment_255767 Tue, 14 Mar 2017 20:58:33 +0000 gravelld http://europhit.eu

I can't see many reasons for phenolic EWI unless you are seriously tight on space, maybe others might have some ideas.]]> Hello from Malton http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255777#Comment_255777 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14978&Focus=255777#Comment_255777 Wed, 15 Mar 2017 00:50:54 +0000 gyrogear Posted By: djhI bought 14 windows and a lift-and-slide door, a tilt-and-turn double door, a pair of french doors and 3 single doors to passivhaus spec for under £22,000 three years ago

FWIW, we bought 7 windows with electric roller blinds, one other electric roller blind; one kitchen door with manual roller blind; two tilt-and-turn hopper windows; four lift-and-slide windows (all Low-E DG) with safety barriers (made in UK !) plus six fixed TG rooflights with integral sunscreens. Cost 32,000 Euros last year. We get 12,000 Euros back in tax-relief. I am pissed off because there is no tax relief on the rooflights, even though they are part of the south windows...

Ungrateful, north brittany :devil:]]>