dpmiller

so streaming 24/7 regardless of actual useage?

Yup, the Caberdek is already down, factory glued into cassettes. Certainly the couple of houses I've been in with screed upstairs have a very massive feel to the floor. We'll have a mix of floor coverings- carpet/wood/tile- to contend with but I'd tend to follow the same logic as @JSHarris that some level of decoupling is better than none.

@Nickfromwales @PeterW I've quite a bit of 28mm to do on a forthcoming job and wondered if you have any thoughts on bending machines other than the bog-standard floorstanders? Specifically handheld/ portable. I'm thinking of the crossbow-style ratchet or hydraulic ones in particular, but keep reading that the ratchet ones are only suitable for soft copper and would wrinkle half-hard. No, can't use Hep before you say, it has to be good for steam service, and we're pretty much limited to compression fittings. As we're only going to be looking at 30-45deg bends for offsets and such rather than pulling 90s, is one of the above units worth the try?

old pair of tights stretched over the F7 as a prefilter?

This is my concern and why I'm considering decoupling the mass of the screed from the structure beneath in some way.

100mm earthwool between the posijoists.

We're having 50mm of hemihydrate upstairs and down. Downstairs is standard polythene sliplayer over PIR, but I'm wondering what to do upstairs. Obviously there'll be a polythene layer, but are there any (reasonably inexpensive) products worth considering as an acoustic barrier between it and the Caberdek below? Thinking in particular about some of the 2-3mm underlay rolls for laminate or such, but I see 5mm XPS being an option too? Or is something like this a possibility, taping the overlaps instead of having a separate poly layer? https://www.ebay.co.uk/itm/Laminate-Solid-Wood-Flooring-White-Underlay-DPM-25m2-x-3mm/161040149754?epid=1831830781&hash=item257ebdacfa:g:tBoAAMXQiNdRdp1l ... it's a local supplier...

Yes Dave. It's a TS and I'll be dumping energy in from PV, ASHP and a boiler stove. I'm willing to risk the COP losses in getting the water up to 50C or so as it'll still be cheaper than oil and we don't have a mains gas option. Plus E7 is cheap in NI and the timing works well with our lifestyle.

in the flesh they're a very neat solution. Harlequin are well respected locally, and it doesn't require the massive amounts of glycol my other favoured option (Copper industries Maxipod) would have required.

Has a month really passed? About 400 tiles left to go we reckon. And boy will I be glad to see that job complete. Guttering (UPVC ogee) arrived today. I've got the microinverters in place in the attic, and they're all flashing away happily. SWMBO and boy have some of the sloped ceilings stuffed, I've got VCL over some if them, and the PIR awaits cutting and placing. Next stop firstfix of the MVHR and other services.

We discussed it a year or so ago and opinions were mixed. I'm pretty much decided on one regardless...

i can't say I've ever given much thought to extended warranties on cheap tools. Let's face it, with most stuff if you haven't killed it in the first month it''ll last a year, and it it makes it to the end of a year it's probably going to last damn-near forever...

Agree completely Dave. Except for the termination bit, I've just done mine and it looks pretty smart with it's snazzy heatshrink triple boot.

regardless of anyone's politico/scientific beliefs, why can't people just tread gently on the planet?

Grey indeed, especially as the linked one says " These cables are designed to be installed in air, or for burial in free draining soil conditions "

Split concentric is used for submains and incomers, it carries neutral and earth *around* the live conductor like this:http://www.doncastercables.com/cables/6/28/SWA-and-Mains-Distribution/PVC-Insulated-Split-Concentric-Cables/

what about split concentric in a duct?

Leadax lead replacement flashing- dunno about other BMs but Haldane Fisher are doing a BOGOF on 450mm/6m. And if you haven't tried it? It's superb. Closest thing to lead....

has the dual flush unit got an overflow that's set too low maybe?

We have a Howdens just opened in town, are there any tricks or catches to a selfbuilder opening an account?

What calibration gas is used?

no step irons?

certainly electrochemical cells for CO and O2 can be "drifty". Also some systems are subtractive, taking the sum of gasses sensed and taking them away from 20.9% to display % O2.

Frame erected inc supply of all wall and ceiling insulation and PB, plus footings- £230/m2

Any good? https://www.notjusttaps.co.uk/spares-valve-sth-16-teeth.html