Roger440

Why would they? I know way more than most people about my house. The majority of the population dont know anything about wall construction. Its just a wall. And why should they know. They emply a professional in the belief that they will know. But how can they know the make up and efficency of a house in a 1 hour vist. Not realistic. Ive been here over a year and i keep finding things, mostly leak paths, that i didnt know about. Even now, if got cold outside air circulating under the back bedroom floor. How would an assesor know that? It has a BIG impact on the heating in that room.

I think you are completely over thinking this. Its a house. Unless the surveyor believes theres a structural defect, what you are proposing is just a paperwork excercise, with some exposing of work thrown in. All completely pointless. The house will remain the same regardless of the outcome. Nor is any buyer likely to agree. I certainly wouldnt. Normally, id suggest an indemnity policy. Buy it yourself if need be. Likely to be £2-300. Sadly, by contacting the coubcil about it, so you have now voided that option as the policy will specifically exclude you doing that. Sadly, you have also now removed the option to offer a future buyer said indemnity policy. As i said, if the survey says its OK, frankly, everything else is just noise. I doubt there are many houses around that have the ful suite of paperwork in place. Unless you acceot that, ill doubt you will ever buy a house. Sadly, solicitors have a job to do, but as Alan said, what it should be, is to advise you of the things you should ask for, but it is YOU that should decide. Sadly, they usually just frighten everyone with nonsensical requests. It was more than 20 years ago. Who cares!

Id agree with Dave. You need to wait and see what happens. On the basis of what you have shown, id expect to dry up pretty quick. But always a possibility its something else.

Doesnt matter how good you or i or anyone else thinks the idea is. We all know its not going to happen. So perhaps we should not go down thast rabbit hole and leave it to your other thread?

How wuill this make the installation better?

We are talking about retrofit, not new build. So how do you do that, on lets say, my house. Half is an 1850's stone built cottage (with, currently wet walls due to cement pointing) And a 1970's cavity wall extension. With some but not all insulated plasterboard tent with hurricane behind. And a flat roofed bit on the side which i dont even know the construction of. That had a EPC bordering on D with an actual performance of about L. I guarantee, even a really good assesor, isnt going to get this right in a short visit. Thats not realistic. But everything about the installation hinges on this assesment being correct.

So my point stands. No guarantee, all on the owner. Lets be realistic, on an old house of dubious or unknown construction, without very extensive work and some airflow testing, how can it ever be accurate. Id go as far as to suggest that majority of those heat loss calculations simply cannot be correct.

Ahh yes, i remember now. So not something that exsists nor is even likely to exsist, any more than the guarantee im looking for as a consumer.

We all know it csan be done. But frquently just isnt. The most recent one was just outside kidderminster. Wall had to be 10 meters high. Circa 100 meters long. They were slowly working their way along on an adhoc basis. Sometimes nothing would be done for a couple of weeks. But huge areras of wall with the wool fitted and no outer cladding, all exposed to the emements. And its been a touch wet. I cant see how wall of that size is going to dry out anytime soon once the outer skin is nailed on. The idea that you can built a 10,000 sqft warehousde with this method, and it not get wet is laughable. Its the UK. It rains. A lot. This year all the time. 2 years ago we needed to move warehouses. In the end we got something built in the 60's with just about zero insulation. But looked at few inc new build. Leakpaths? everywhere. Could see daylight past window frames, feel the breeze past the trims at the corners. Could see sunlight peeping through the wall to eaves trim. My gripe, same as always, is all these standards are utterly useless if what is built bears little relationship to the design. All those expensive composite panels, defeated by simply not joining the walls together. I wouldnt mind betteing there were no seals on the panel joints either. So buildings are being built where the stated performance and actual performance, and hence energy consumption are miles apart. Nobody cares or accepts responsibility. So long as the boxes are ticked, its all good to go. Think of all the composite panels that have been manufactured, with all the chemicals and emmisions that entails that are simply doing nothing due to poor workmanship. Bonkers.

Dont know, you tell me? Like the never ending discussions on HP installation that cost £15-20k. But people on here doing them themselves for £3k. The roof for the barn would be just shy of £50k inc VAT. 120mm composite steel panels. Fully installed as i cannot undertake that myself. It would be wonderful. Not going to happen. Ive done all the easy stuff on the house (and barn in fact) as i posted elsewhere. Theres no easy low cost stuff left to do. Its big invasive work now to make any gains. Even doing it myself its 10's of thousands for the house. If i was paying it would be eye watering. The workshop thing is probably for another thread, indeed i started one a good while back. As its a hobby, i dont want to be cold. Ive bgot a heated jacket, and as good as it is, its not the same thing. My fingers will still be freezing.

A radiator schedule is not a guarantee of being warm though is it? When you are not warm, someone pointing to a schedule is no help. How is the customer to know if the schedule and calcs are correct. They cant. Thats what professionals are supposed to be for.

I think you are arguing with yourself. Im really no longer sure what your point is? Ive outlined what i consider working. Being warm (lets say 21 degrees) and for a known power consumption (lets use kWh)

But its still not a gurantee of result. As i said before, i can have a guranteed SCoP. Where my gurantee of being warm.? Yes, IF its designed correctly, them i will be warm. Emphasis on "IF". I understand completely that a HP CAN be installed and made to work correctly. Theres no argument about that. And yes, there will be the pain element of capital cost. And that is an undoubted problem for many. But the primary reason out in the real world, is that lots of installations dont work properly. People who have systems that dont work properly, tell other people. That how it works. In a normal market, lets take cars again, those providing a poor product eventually go out of business. But this is diffrent. Theres a cartel, and government subsidies. Normal rules and gurantees seem to absent. If buying a HP was £500 then id be less concerned. But its up there in terms of being one of the biggest purchases you will make outside of the house and maybe a car. And for the consumer, there is, literally no gurantee or protection from crap installsations. The reasons why are of no concern to the consumer. Ill say it again, give me a guarantee of performance and power consumption, im listening, other no, ill not be a victim. When/if that happens, then im sure take up will increase.

It isnt. So tesla gave a free upgrade. Lovely. Not that i would own a car the manufacturer can tinker with remotely. But that a seperate issue. How is that relevant to their being no gurantee on a £15k HP installation.

End result is still the same. As a customer, i dont care if its the calcs wrong, poor installation etc. Its the customers problem if it doesnt work. Outside of this forum is a big world, where lots of piss ;poor work happens. If you ignore all the "anti" nonsense and weed out the ones who actually have a system and a problem, the overriding message is clear. House not warm and/or costs a fortune to run compared to what it replaced. I dont know anyone, personally, who has one and is happy with it. I do know some who are not happy. Small sample, ill give you that, but its the reality. There been enough people on here trying to resolve poorly installed systems. Where the installer doesnt want to know. Give me a guaranteed result, and im all ears. Guaranteeing SCoP is not doing that. Interesting engineering as it is.

Its still not relevant, because i dont have it available to spend on improving the insulation. Its a theoretical argument. And a political one. But not one that in any way influences what i do.

Not really the same is it? Your car is hardly new anymore. The design was fine when it was delivered. That the EGR hasnt stayed working forever with zero maintenance isnt a surprise, any more than a heat pump will shit itself eventually. It will fail one day. Maybe 5 years, maybe 10, maybe 20, but it will fail. And in the unlikely event it failed in the first 3 years, it would have been fixed, for free, under warranty. So all very different from a HP installation, where its mostly, fit and walk away. And when the callbacks get to much, fold the company and resurface next day as a diffeent onre.

No, because its not relevant. Its not £300 a year i can have, Not that it would make much difference if i did as the cost of insulation in this case is 10's of thousands.

One lone installer, good as he is, isnt going to achieve much. Though its interesting No one else gurantees it. Lets face it, they would likely go bankrupt if they did. Many offer warm woolly words. But thats not a guarantee. And no one in the real will cares about COP and SCOP. its about how much it costs to run, and are they warm. Yes, the 2 are clearly related, but not the same. Yes, the system achieves an SCOP of 4, but it cant get to 20 degrees inside isnt much use. Gurantee i can be at 21 degrees, no matter what, with a power consumption model to achieve it, im interested. Until then, and whilst performance risk lies with me and not the installer, ill sit back and wait. Can you imagine buying a car, but the manufacturer says, well we say it will work, but if it doesnt and you need to modify it to do so, its nothing to do with us, you will have to wear that cost yourself. Bonkers.

What tapering price gurantee? The day someone gurantees running costs, (im NOT saying it nreeds to cheaper) is the day heat pump installations can make progress. As far as im aware, no one does that. Its always on the home owner if the system doesnt perform. Happy to be proved wrong.

Your proposal, whilst theoretically cheaper overall, would take far longer to yield a result. Ref industrial buildings, you need to get out more. The vast majority i see being contructed are doing a steel inner skin, insulation batts, then an outer, rather than composite panels. One presumes, because, even with labour, its still cheaper*. And for good measure, all the insulation is sopping wet by the time the outer layer goes on. So it will never dry out, and we all know what a great insulator wet mineral wool is. But hey, box ticked, so its all good. Compliance achieved. And have you ever looked at attention to detail and air tightness on these places? One presumes there are no testing requirements, as the amount of leak paths is just bonkers. * ~Ive looked into this at some length as my large workshop as a single skin compressed cement board roof. I really need to insulate it. I got a quote from a friend of mine to replace with composite roof panels. (its what he does for a living on massive warehouses.) It was just bonkers. Fortunately i was sitting down. Mineral wool was far, far cheaper as a solution, be it undercladding what i have or replacing as per above. The cheapest option is to do the best i can from inside and burn oil. Theres no way doing it properly can possibly pay itself back in my lifetime.

Nowehere? You can have a high temp heat pump today. But no one can afford to run it.

Thats interesting. It gives me an option. The overload situation would be relatively infrequent, such as when running the workshop compressor, extract fan or charging the forklift. Im not keen on such things, as, being full of electronics, it will likely be more unreliable than the equipment it will manage. But it looks standalone, so should be easy to diagnose. I operate a no electronics policy as far as i can. If i have to have it, then it needs to not take down everything when it fails st 3pm christmas eve for example. Definitely no "internet" enabled stuff. Both my internet and electrical supply can be a bit flaky, so i have to take thjis into account in my plans. Hence my reluctance on an "electric only" house solution.

Whatever the reason, it complete bollocks.

Dont worry, i know the answer to my own question. Grant harvesting. And making mad money. All for "chums". I probably need to find the time to apply myself to understanding doing it DIY, as it seems, on the fasce of it, rather complicated. Though my incoming electricity supply capacity is still the biggest issue with adding 2 x heat pump load. One for house, one for barn.