dpmiller

Unlikely to be furred up on this side of the Pond. Plus quarter turns don't work so good with low pressures. I'd dig out the box spanner...

both? Surely you'll need a polythene layer above the PIR regardless of where the DPM is. And what about Radon?

enough for a hat?

flow relative to outside temp, likely.

They're using SIGA tapes on ours, over VC Foil Ultra. The window tape is superb, really easy.

you might look at Kudos, TTFC, QTF, Kilbroney, Kingspan, or Leadon. Some have "book" designs, all will manufacture to your supplied plans. We went with Leadon and I'll give them a hearty recommendation.

Don't negate providers on the other side of the Irish Sea, they're not afraid to travel...

Yes, that's the standard way of doing it round these parts AFAIK. We'll just go with a flat UPVC board over the timber- colour matched to the guttering and windows- like Dave is doing but not just as deep.

you can put a strip of cement board on and render over it, we've just put a rough treated timber 4x1" as a backing board (which the gutter will mostly cover) and will render flush up to it, probably with a slim colourmatched UPVC fascia behind the gutter.

MgO? http://www.resistant.co.uk/products/moistsure/

A willis uses a standard immersion element and has a built in stat...

how do you fit and tighten those nuts in-situ with that bowl?? Looks like a broken wrist is mandatory...

just temperature, or a DIY weather station? You could do a lot worse than one of the FineOffset units (Maplin used to do them eg) and you can either just look at the display's trend analysis or use a software package like Easyweather or Cumulus.

you don't do much stirfry though Jeremy.

I must admit I'm of a similar mind to @scottishjohn and am focussing on a low-tech solution. The TS I'll be using (Harlequin Heatstream) has a C/O stat on each input coil and the coils are zoned within the tank. Between these, the microswitches in the motor valves, a couple of roomstats and (possibly) a cheap PID controller, I reckon there's plenty of options for marshalling energy in and out of the system...

250m2

we went with a similar mix- 140 of Frametherm 35, VC Foil Ultra, 40mm PIR, service void. As all the insulation arrived today, I've just sat with the calculator and totted up a guestimate of it's value and it's somewhere around the 6k mark.

Well today brings a milestone. Firstly the arrival of a large truckload of various insulation types heralds the approach of internal warmth. and blockwork is complete. Having chimneys really plants the house, to me. the eagle-eyed amongst you will no doubt note the stack of PV waiting to go up, and the small patch of tile I've put on for a look-see. Finally. I climbed up to see the guys' handiwork on the chimneys and was truly touched to see this:

Orlit houses locally too...

That's a Polypipe manifold with 15mm pushfits and some kind of reducer pushed in (10 or 12mm JG?) I presume you've used 16mm pipe? I'm not sure, but i don't think the Polypipe connector comes off leaving a Eurocone. I could be wrong tho, it's worth a try.

Conversely... The TF companies are generally happy to do one-offs. All that we approached were. The economy of scale is in the purchase of timber and the utilisation of the manufacturing line. Todays automated lines are driven by a cad file, the operator is just placing occasional parts and inspecting. Our kit cost included all insulation, airtightness materials, and PB, as well as cranage and erection. Payments are phased, and (eg) ours were 30% deposit, 10% on completion of manufacture but before delivery, 45% on erection, and the final 15% will be on completion of the insulation works. Our kit manufacturer is local (~ 50mi) and both they and the erection subcontractor skilled locals.

Electric *and* water UFH? Interesting thought. And one that I'm likely going to spend some time on today, now... My current plan is for two manifolds- a 12-way for all the downstairs underfloor as well as a loop for the upstairs bathrooms, and a 7-way run at a higher temp for towel rails as well as provisioning for rads in the upstairs beds. I'm thinking that as I'm heating a thermal store in the summer for DHW anyway, the small amount of heat needing to be tapped off it for towel rails and 1x60m loop for the two bathrooms won't be a killer. But a straight electric option for both is worthy of consideration. (oh, no mains gas, but ASHP, PV and a boilerstove)

I've had positive outcomes dealing with both PSW Trade and Heating-Instal. You'll find them both on Ebay and elsewhere and they are very competitive. I've also chanced buying some pipe from one of the Chinese shopfronts on Ebay, it arrived quickly and is (most likely) the same product everyone else is flogging anyway...

Not fussed on that personally. In the last pic it looks like rough-sawn timber from a pallet, with a thick layer of gloss applied...

Bumping this for further opinion. I haven't seen it yet, but do any of these have the option of remote boost control? Simple boost button in kitchen/ hallway/ whatever, rather than having to go to plant room/ hotpress and negotiate menus?