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Imported Chinese bicycles to become much cheaper. Good news unless you are a small British bicycle maker.. Bloomberg: Brexit Sparks Battle on Chinese Bikes as U.K. Ends EU Levies. https://www.bloomberg.com/news/articles/2020-10-30/brexit-sparks-a-battle-over-chinese-bikes-as-u-k-ends-eu-levies Perhaps the reason they only have <1% is the Chinese state subsidy?

Its not clear if they are definitely linked.. In my limited experience I have found that Pressure Relief Valves (PRV) are fragile temperamental things. If the pressure goes up too high just once (so that a little water comes out) then they can start leaking all the time. Not quite sure why but I've had at least three or four do that. So if you get the PRV replaced and need to pressurise the system yourself in future be careful not to go so high that the PRV opens. As you know water expands and contracts when it heats up and cools down. Others have already mentioned that there should be a correctly sized expansion vessel (or two) somewhere that accommodates the expansion of the water so that the pressure doesn't rise too much and the PRV doesn't open. If the expansion vessel is too small (a design fault) or has lost its charge (needs pumping up or replacing) then the pressure can rise too much causing the PRV to open and in my experience its quite likely to fail with a constant slow leak. None of this is specific to ASHP. I've had this issue on both gas and oil fired systems. If you can find the expansion vessel(s) they may have the size writtin on them and if you know how big the tank is it might be possible for one of us to check if the expansion vessel is too small.

As @ProDave said a gas or oil boiler would also stop working if the pressure gets too low. Somehow youre going to have to find that leak or it will keep happening. Is there a pressure relief valve and does that leak a little water when the system is hot?

+1 They need to be separate enough that you could sack the builder without any implications for your purchase of the land.

I'd want to visit one. Do they actually exist or are they just an idea? I note all the photos look like CAD or are they?

Perhaps I misunderstand. Why not? (If its because you other half says so then I totally agree).

That depends on the soil type. On some clays removing a willow could lead to heave.

How far would the rain deflector need to project out from the wall?

By the way I've recently switched my system over to using 1.5m versions of these "no tools required" hoses. Much easier than trying to wrestle inside the cabinet with a left handed spanner ?

Think this is where I ordered from.. https://www.gottle.co.uk/ I think they are agents for Calor which is why it ended up coming from my nearest Calor depot. Note the banner heading.. SOUTH EASTERN ENGLAND - ALERT - ONLY 47kg & 19kg are available in your area to order due to stock issues. Postcodes affected by South Eastern issue.

I ordered a 47Kg online about two weeks ago and it was delivered a few days later. There were warning on the website about a shortage of smaller cylinders in the south east but no issue with 47Kg that I could see. I think mine came from Calor in Peterborough but the actual office is closed - thats why I was ordering online.

Because the tax man may see your temporary occupation of the house as an attempt to avoid tax by claiming its your Principle Private Residence. You dont want them to think you were building it to sell for profit all along. I'd move in, tell your bank and employer you have moved house, hold a party, invite friends. Eg do all the things you normally do when genuinely moving house. If you really must move back into to bungalow think up a good reason why you might do that other than so you can sell the house for profit. Perhaps you found the new house too small? https://www.the-self-build-guide.co.uk/self-build-capital-gains/

Have you tried changing dns server to googles? https://youtu.be/H-4ujXKtbC8 https://appletoolbox.com/ipad-slow-youtube-fixes/

+1 to cutting the bed post.

Are all 17 units in a 200m long line or a circle or ? I wondered if the site layout might suggest a solution.

C Crazy idea but could you sleve 3.5mm nails with 4mm ID 7mm OD plastic tube? Would need to find some volunteer to cut up lots of bits of tube to length.

Was trying to google some nails for you but found... http://www.roofconsult.co.uk/articles/tiling/tips14.htm "Since September 1997 it has been recommended that all battens used for roof tiles and slates should be a minimum of 25mm thick to allow the tile nail to get a full 25mm of grip." Makes me wonder why they still sell 19mm battens?

Google for Makita circular saw depth gauge. They seem to be cheap. Perhaps buy one marked in mm.

+1 How did you do the waste? On the few I've done its easier if the waste can move around a bit so it can be pulled to the underside of the tray when you screw the top part into it. So I left a channel for the pipe and trap to move around in rather than encasing it in the sand and cement. I just put a small block of wood under the trap so it wouldn't drop down so far the threaded top part couldn't reach.

I recommend checking what flow rate is available from the cold main. Perhaps its the pipe layout around the house causing the issue not the mains flow rate. Partially blocked filter on the inlet to the Baxi? Or would that give error codes?

Did you tell the last two you would provide a site survey? Perhaps the tree surveyor was expecting to have to make his own?

Perhaps a fire escape staircase out back would make an open staircase inside acceptable?

HMRC will tell you there is no fixed time limit that you have to live in a house before it becomes your Principle Private Residence BUT that your intention at the outset can be taken into account. So moving house for work reasons after just a few weeks might be enough to avoid tax. However telling the bank you want a short term loan because you intend moving soon after completion might be enough for the tax man to decide you were building for profit all along. I reckon you should live in the bungalow while building the house. Move into the house and do up the bungalow quickly. Sell bungalow. Wait three years until you are exempt from the CIL and move house. I would avoid returning to the bungalow unless you can find a good reason - such as not being able to afford the house or a medical reason for avoiding stairs? Avoid renting out the new house before you live in it as leases are exempt from VAT rather than zero rated. This means you can't reclaim the VAT paid during its construction as you normally can. If the bungalow has been empty for more than 2 years don't move in until after work starts on its repair. That way the builder you employ to do the work can reduce rate VAT to you. Move in first and he can't. If HMRC decide you are doing all this to make money it can be taxed as Income Tax rather than CGT so the tax bill might be higher than expected.

In my experience the planners will only take an interest if the neighbours complain about a breech.

Induction type for power locks.. https://doorentrydirect.com/securitron-icpt-powerjump-inductive-coupling-power-transfer?ppc_keyword=&gclid=Cj0KCQjwxNT8BRD9ARIsAJ8S5xaUfFJXskhmzCNRRnLRuT9lisxoJLZVqbxTaamj6DcEI91DTsTLLBsaAkcEEALw_wcB Time for bed.