Nickfromwales

Get a mitigation strategy in place demonstrating the planting of new trees in a quantity that should offset the impact of losing that one. Deffo try appealing against the TPO.

Agree, but the A/C will be split units = ugly and noisy ( IMO ) . Wet duct heaters can be integrated behind / above fitted wardrobes and have near zero visual impact .

Which according to my wife I do very well. ?

....to the digression

The wet duct heaters recirculate in the rooms, and stand alone from the MVHR. They should be less intrusive, require no external wall warts, are nearly zero maintenance other than cleaning, and would run off the ASHP.

Solar PV would be 'interesting' with that shape of structure. All electric would be a neat solution, but its down to heat loss figures and matching the solution with the problem. Best to do a proper analysis on overheating as cooling ( with that huge amount of glass ) could be more of a consideration than heating ! The biggest issues will be on the upper two floors, so be 100% diligent in your investigations. Too early to have a stab at whats going to be best TBH, but I think you'll do well not to have to have active cooling on the upper floors, annoyingly just to deal with the peak months for solar gain. This could be mitigated largely with a good solar reflective coating / film as some have done with good results, and I think I'd start there. I don't think it would harm to run this through PHPP even if your not going that route, just to get a well defined breakdown of risks and requirements. A SA for DHW is a no-brainer, just to get away from G3 and discharge pipework more than anything, but with a heat sensitive house you also want too actively reduce standing losses from any such device. An ASHP is likely, as you'll need a fair bit of heat in the winter, but you'll also have a means to provide active 'cooling'. You could also go for wet duct heaters / coolers in the upper floors to accent the ambient eg do away with UFH for the very upper floor at least. Wet duct heaters for the gym may be attractive too, so you could run cooling just there whilst doing some thing called exercise. I'll google that later, maybe

For a current client we went with a log gassification boiler ( as a WBS isn't eligible for RHI ). Have you looked at that as an option? Payback will cover the clients entire capital outlay on the equipment side. And the list would go on. Yes, sadly not the easiest or possibly most realistic question to ask....was hoping the answer would be as simple as me

I guess anybody and everybody who enters into a written or verbal agreement aka contract is. https://www.thecomplainingcow.co.uk/how-to-use-the-misrepresentation-act-1967/ Just a random 'net grab.

Cant think of a more PITA way to do its tbh. The irregularity of the fixing locations would see a lot of drilling and boring out and that would seriously reduce the integrity of each fixing point ( IMO ). Theres thinking ahead and then theres 'hold on until you need to do that' that needs to be applied. Plus, how would you get compression on the fixings as rebar isn't threaded ( unless you meant threaded bar not rebar ? )

TBH if somebody comes to me wanting to install £40k worth of renewables ( retro fit ) then I ask them if they really want to do that as they're never going to see the payback. Great for some who say its for their childrens' children, and also great for the few who actually instruct me to do as they wish regardless of RoI etc, something that happens more frequent that you'd think. The '20 year question' has a point, as in its the reasonable time to expect to see RoI and to actually see the financial ( removing morals for the moment ) benefits of pursuing such endeavours. One chap rang the other day asking about SA / PV / etc and how to rid himself of his oil combi. After finding out he wanted to move in 10 years or less to his 'forever home' I told him to change to a condensing combi, improve the insulation if possible, and maybe fit PV but only if he wanted to. I have to show due diligence so cannot be an eco-warrior with other peoples money, so my perspective may not be aligned with most on this forum, or anywhere else for that matter, but id still like to focus on that term, eg 20 years. Another question is would folk be better off changing to all electric ? eg switching from oil to an electric boiler ( high temp for radiators in most instances of retro fit ) and fortifying with PV ? Too multi-faceted to ask here, unless anyones bored, but the core question remains, regarding fuel costs for the next 2 decades so I can reinforce my case when clients come knocking for 'renewable solutions'. Im off to McDonalds now, and then to the off-license, and then to the betting shop with my Giro. Must be back home by 11 for the back-to-back episodes of Jeremy Kyle. Not.

Not much choice being that close to the shower ? I’d rather a pedestal than see the trap ever day of the week. Semi ped the absolute minimum.

Hold off until you fit the basin. A bit of a tug and it’ll probably snug over enough.

You want this one ?

You can only use as much heat as the dwelling will take at any one given time. If you turn the upstairs TRVs up to setting 1 or 2 you’ll still probably see them either staying shut or only opening fractionally to acclimatise with the ambient temperature upstairs, generated by the heat rising from downstairs, and then they will close automatically anyway. At that point you’ll have used more heat and be back to square one, albeit with a slightly warmer house. The issue is when the system is idling, after raising the house temp to the set point on the stat, it needs to shut off, but with multiple zones you have to leave the boiler idling to give heat even if just a single loop in a single room is still calling for heat. Thats the part that you or your plumber should be designing out, it’s just most plumbers are preprogrammed to give you heat in abundance and they don’t often cater for low heating loads. Hence the 30kW boiler when it’s likely you could get away a 24kW with ease.

Anyone care to have a stab at what ‘the future’ holds for oil prices ? As I come across more and more instances where folk wish to move away from burning fossil fuel, I am being asked for cost comparisons / RoI etc and I really am not sure about 10 and 20 year forecasting, so thought I’d put it out there. It will also make some interesting reading and hopefully fortify members and guests decision making when considering capital expenditures vs lifetime ownership of such fossil fuel based systems. I suppose adding gas into the scenario would likewise be of benefit. TIA.

IIRC the 30kW WB modulates down to around 7kW so if some of the rads were on at the same time youd prob be ok, but is the 7kW figure peak or average? eg could it be less than 7 because if it routinely goes under that then your into short cycling. The manufacturers literature will often tell you to design that out.

Happy days. Giggle water for everyone ;)

Diamond do an 850 x 1800 and you can make the end up with a suitable filler material with ease. I made this airing cupboard to house a Vaillant 938 combi and then looked at the gap left to see how big a wetroom I could make. The diamond was the weapon of choice and the gap was 2000mm or just short of iirc. The gap was at the end, and I just made it up by shuttering and pouring some very wet flexible tile adhesive over another layer of plywood. The end was benched very slightly to match the fall in the tray. Worked well and gave a huge shower. Link

Yup. Last one had us taking the doorstops off the door linings to get the screen through diagonally. Lot of painting and repairs afterwards.

Brush a bit more tanking on and chill.

The search engine is your friend. And plenty more where that came from ?

@PeterW Ive got a used 8 port manifold I’ve promised to Clive. It’s got a pump and thermo head / capillary wire doodah so will blend down low and reliably ?

Not always. A lot of high level ( entry ) rads seem to have the TRV up top too which seems daft. I’ve neber stopped to think about it tbh as almost 99% of the single pipe systems I’ve cone across have been taken out for a new flow and return based system.

Just digested the question you asked. Yes, the phase change is ‘au natural’ but ultimately you’d want the SoC controller to stop energy input if it was better off being sent elsewhere eg to space heating.

You’ll need to tap off that single pipe system to get a flow and return. That’ll need blending down and then pumping into the UFH loop.