SteamyTea

Could have bought a holiday home in Mousehole for that.

If you have not already done so, pay with a credit card, then you get section 75 protection. (terms and conditions may apply, check them)

Read that as hand shandy.

Probably to keep it simple, there may also be a difference in the fluid circulation between the outside heat exchanger and the inside pump units that for splits and monoblocks. I suspect that split units were originally designed as air conditioning units for high rise flats, where the external heat exchanger is on the roof. On that basis, I suspect that monoblocks were designed to be a replacement for traditional boilers, or furnaces, and have been designed not to scare plumbers too much. I personally cannot see a problem with it being a fair distance from the house, some houses are quite large and there is no difference. Juts make sure everything is insulated properly.

The thermal losses will probably be the same, so the loss of CoP is probably similar. Any pipework needs to be very well insulated if it is to be buried in the ground. Keeping pipe runs as short and straight as possible. KISS

I would run the sheets to within a few inches of the edges, then to fill the height difference between the top of the sheet and the original GPPed roof, with a bit of 1/4 round timber in. This will make it very easy to 'wrap' the new GRP around. Any timber that is laying on the old GRP roof will need to be tanalised (or made from anything rot proof) just in case there is some residual moisture. And those edges need to be ground back and the new GRP laid on top. Should not need to change the flashing/trim. I don't think this roof will fail and I suspect that the bits that look like they have delaminated are really just where it cured before it was rolled down. Out of interest, how much have they charged for the GRP part of the job?

Is there really a problem putting monoblock ASHP a few extra meters from the house, surely it is just a case of properly insulating the pipework, which you will have to do with a split system anyway. The more important part is the routing from where the pipework enters the house and to where it is distributed to the UFH/Buffer, Thermal Store, UVC or whatever.

The reason that air is not used is for safety. Air expands, water/oil does not.

Yes, misread it as £.

Driving home last night I heard something on the radio about the wine industry wanting no tariffs to help our wine exports. I don't know the size of the wine industry in the UK, but I suspect it is smaller than fishing, which at 100 million is very small (GDP is around 2.7 trillion).

Can you have a secondary roof, with a fall, built over the original one? Basically a large wedge of timber and OSB3.

Usually it is the inverter. These are built in and if commissioned properly (we wary of SMA inverters as they can lock you out of you fail to get the country number correct). There is usually a certificate with the inverter that states all this and a copy has to be sent to the DNO.

While it may be watertight, I would not be happy with that amount of pooling. If the builder/roofer/GPR person suggest covering it in shingle, you know what to do.

Seems harder than GRP, but then I have never tied to EDPM a roof.

Clearing up my end of the country, so I can stop working on the window surround repair and go out.

Back to basics I think. PV will deliver its power to the closest load, even if that load is greater than the PV can supply. The difference just gets supplied by the grid. It is not either/or, but both. What you can do is get the PV to initiate that ASHP i.e. when then PV is generating above a set level, say 5 amps. Some inverters have a relay dedicated to this. Or you can just put the ASHP on a timer, say between 9:30AM and 4:30PM, and rely on averages to offset your imported energy. This can be seasonally adjusted to take into account different hours of daylight. Ideally you need to do both i.e. switch on once PV is supply above a limit and between set hour (times PV generation s higher i.e either side of noon and adjusted for your array azimuth). That way you reduce short cycling of the ASHP (same apply to resistance heater in reality, adding a couple of Wh to an element every few minutes is going to reduce the life of the element, just that it is a longer life and a cheaper part to replace. I think there is too much emphasis on high temperatures for the legonella cycle, do some research and find a proven domestic case that has been caused by the DHW system, then decide.

Contact your local DNO and they will tell you what they need.

120mm² For a 10 metre run. https://www.solar-wind.co.uk/info/dc-cable-wire-sizing-tool-low-voltage-drop-calculator and the circuit breaker will be huge. This sort of thing would need very careful design, probably better going up in DC voltage. 48V system would only need 35mm² 96V would only need 10mm² Now you are into 'normal' cable sizes. https://www.alibaba.com/product-detail/96-volt-5kw-6kw-7kw-power_62450791324.html?spm=a2700.7724857.normalList.127.159a6819aXCwIO (This might be a grid tied inverter, but you get the point)

Have a look at inverters that can me installed together, rather than 1 inverter that can 'do the lot'. It is a big ask to expect a single unit to deliver either 3W for a light bulb and then 7 kW or more for cooking.

Are these small (relatively) inverters OK with induction loads?

I fancy having a play with some of those systems, I like polyurethanes. If you have some left over, let me know.

Really, more than most working people in Penzance, Camborne and Redruth probably earn. See how the colours don't match when housing costs are taken into account.

I was unwilling to pay the extra for that, and no slots free on a Monday, may day off. Hopefully they will turn up on Wednesday before I go to work, but I think they use Hermes. Friday 21 August 2020 by Neil Tollfree Amazon offers option to pre-report lost parcel if delivery assigned to Hermes Amazon will now offer customers the chance to pre-report a lost parcel if the delivery has been assigned to Hermes. “If your delivery is assigned to Hermes, then it is pretty much certain that package will end up left up a tree, under a motorway flyover, or on Ebay,” explained Amazon representative Simon Williams. “So, from Monday, as soon as a delivery is assigned to Hermes, customers will have the option to immediately report the parcel as missing and request a replacement or refund. “There will be no need to wait for the inevitable ‘We’ve left your parcel in a bin in an industrial park six miles away’ card to come through your letterbox, everyone will just assume that, because it’s Hermes, that’s going to happen anyway.” Amazon customer Mark Hammond approved of the plan. “Really good idea. Will save a lot of time,” he said. “Only the other day, I got a card through my letterbox from Hermes saying that as no-one was in, they’d left my parcel on my doorstep in a parallel dimension. “So, then I had to spend the rest of the week reading up on trans-dimensional physics and creating a portal to the parallel dimension and when I finally went through the portal, I found they’d left the parcel in a pile of dog-shit and then piled more dog-shit on top of it. “I wouldn’t have minded, but I was in all day.” Hermes responded to Amazon’s move saying ‘f**k off, we’re Hermes, we don’t give a shit. C**ts.”

No, I am totally right. If the resins are correctly proportioned and mixed with the hardener (misnamed catalyst, though it is really an oxidiser) then there is nothing for the water to react with (it is free hardener that causes the gelcoat to fail, when mixed with water the PH changes and dissolves the polyester molecules). What you are describing is bad workmanship and will fail prematurely, even in the absence of water. Thermal expansion and contraction will see to that. This is why prepreg was developed, it takes out the human element from it. I developed, over 30 years ago, an 'ismosis' free system for high temperature and high humidity environments. The system is still for sale, but not cheap. It is way over the top for a roof coating though.

No it isn't. The misnamed 'osmosis' is caused by the gelcoat failing. This is why the moved over to epoxy resins. The molecular crosslinking is greatly improved compared to modern polyester resins.