MikeSharp01

Any small holes I had I filled with ORCON F but to be fair we have thousands of screws holding battens against the airtight membrane and we got a 0.3 (BC test) (0.2 on the Passive House scale) for our air tightness.

Take the laser off the tripod and put it on the slab, use some thin packers to get it level - that stops any wavering from the tripod and minimises the rod verticality issue. You can then use a very short rod on the receiver or maybe the laser will scan roughly the middle when its standing on the ground.

Sorry I missed that - yes I see.

Does this run continuously or pressurise a receiver on demand? What are you doing that needs the equivalent of 7kW of compressed air all day? I can't see why it would not be possible to charge a balanced 3 phase battery inverter setup from a single phase. Perhaps bit of a Pfaff but might also be done with a 3 phase solar setup.

That does not need to happen there are very few industries, some aspects of the steel industry , that cannot use electricity - the issue is the price of electricity.

Interestingly the piece on the world this weekend has covered much of the ground in the gas / renewables price discussion above while getting people from Whitstable, where our new build is, to comment on the windfarm you can see from the beach as a proxy for how the country feels about windfarms. Worth a listen. https://www.bbc.co.uk/sounds/play/m002hl0g ⁹

While I am a heat pump advocate I don't think there is a plan. If there was we, many on here anyway, would be counting down the days. I remember pointing out a paper published by the energy department in December 2024 that says the plan is to rely on gas until 2050 so no plan until then by the sound if it so UK energy prices will remain above those of our competitors for a long time yet making us less competitive etc, etc.

This depends on a number of factors: The size of ASHP, the area of the heating coil in the tank - the bigger the better, and what you set the flow temperature from the pump for the water heating cycle.

Had I done the install myself I would have had to pay VAT on the supply only contract which I could claim back once the build is finished. As it is I have paid for the install in addition to not paying the VAT on the supply. Hence I am down the install cost which although I could have done it myself I felt it worth getting someone else in to measure and install it thereby reducing my risk of the install.

Ours was 20% exactly (almost) and we decided to get it installed by the company as they would zero rate the VAT at that point so overall it will, when we get to end cost us more - as we cannot reclaim the VAT, but at the point of installation it was cash flow and risk management effective.

You need to show your working for anything even slightly off the beaten track! (see what @saveasteading says above. No it is part of the new Part O of the building reg (England) you need to show your calculations / working out. I hesitate to say - common sense but in fact many trades won't work on the site without it and some things cannot be done without it in place - EG MCS grants.

Given that it looks like they may have had the grant awarded but failed to complete the service within the 3 month window. (Once the grant is awarded you have 3 months to complete the sign off after that the grant is withdrawn as I understand it), lets hope they just didn't complete the application in time as that means they can start a new one. We have been asked for the following questions needing answers & information to accompany the grant application (so before the grant is awarded): Full Name/ Contact Number: Address of property where heat pump is going to be installed. Address if not living at property currently. Is the heat pump replacing any fossil fuel heating system. i.e: Gas/Oil/coal/ or none it’s the properties first heating. Is the property on the gas grid? Is the property a self-build or existing property. If not new build- does the property have an EPC. EPC Number needed If the property is a self-build build the below information is also needed. Please note- to be eligible for the grant the property must not be registered under a business name. · They require a copy of title deeds/land registry · Contact of sale for land/property A self-build property has to have been funded by the property/landowner and require the following as proof: Substantial invoices eg: Foundations/timber frame/ Builder or tradesman invoices. (please send multiple invoices as proof) Self-build insurance (if applicable)

Guess it depends on your local regs, what systems are in the build, the flexibility or otherwise of your chosen building control (BC) supplier and your personal capabilities to some extent. Here is my rough cast list for England, and I may have it wrong so lets see what others think: Electrical installation sign off - might be an electrician or could be done by BC, who will arrange for testing on your behalf, if agreed prior and then you can do the install yourself unless it involves your incoming supply which will need to be done by your local Domestic Network Operator (DNO). In the case of Solar / battery / ASHP installs if your want MCS certification you will need that done by an MCS certified electrician. Plumbing sign off - only need be done by a qualified person, holding the correct tickets, if it involves gas work or a sealed cylinder or you want MCS certification for say an ASHP for anything associated with the main supply of water you will need the local water company to complete but you can possibly do some of the labouring / digging for that - same for gas supply. Also if having your own bore hole / treatment plant needs third party sign off I think. EPC / SAP - must be by third party I think!!! Air tightness - must be by third party, but if you own, or have access to, equipment with national standards traceability and your BC is prepared to accept I think you could do that one yourself. MVHR (if used) - must have balancing / flow rates and your BC may or may not accept your own certification - experience here (on Buildhub) says they normally will accept DiY. Structural Engineering - your building control will need to be confident that all the structural elements are correct and this usually involves getting an structural engineer to issue drawings and calculations. If you were up for it you could probably do this yourself but it would need to be approved by your BC and you will have no insurance recourse if it goes wrong. Other Building Control sign offs you will probably need a paper trail from others - Fire protection EG steels protection, Windows - install paperwork, glass certifications (EG Toughened - usually engraved on the glass), the area / orientation of glass for overheating control, communications infrastructure - High speed internet connection some of which you might be able to do yourself! Site insurance (third party minimum)- must be third party. There's a kick off list for England, I am confident there are more, Scotland is different but I have no experience so am leaving that for others.

A cool mistress and a steaming spouse does not feel like a great solution - although on reflection....

Just Paint the post the same colour as the render.