Roger440

But how would one monitor the effects if the dew point did actually move into the wall build up?

What indeed. Having an 1980 built cavity wall extension and needing to do same as you. Down at base level ive done some build ups in ubakus. Which clearly isnt has clever as WUFI, but even grossly exagerating humidity levels inside and out doesnt suggest a problem. Perversely, ubakus say i should be having a problem now with as built, and clearly i dont! So, question for me is, would anyone actually commit to using that model in the real world? WUFI would be better but comes at considerable expense, i assume, as actual iinformation on what that really costs seems to be non existent, so guessing its not , maybe, as widely used as i think?

Depends where you are on it. Economically, yes, it can be expensive, but if you want a home in a more rural location, conventional planning is rather stacked against you, well, in the more busy parts of the country. There is a degree of logic to the rules. Interesting though that Wales does not have class Q, and so, as a consequence there are many thousands of small farms and smal holdings still in existence. I think thats a good thing, but im sure many dont, or dont even care. Prior to abandoning the dream of a self build, barn conversion projects is what i was mostly looking at (in england)

So a house inside the barn? So the barn is just a rain/weather shield? Always wondered why this wasnt done more often given the grief people seem to go through stengthening the barns,

Its all somewhat moot. The only thing that matters is shareholder value. That there might be significant environmemntal and social good attached to undergrounding is of no consequence at all. Added to which is lots of "speculative" projects being proposed all over the place, each one of which creates a permanent financial blight on the houses and villages close to it. The reality is most wont ever get built, (that would result in massive over supply) but there is simply no overall plan. Its just a free for all of speculative planning proposals, at the expense of the people in those areas. That before we get to the illegal land entry, breaking and entering sites, criminal damage, proposals with large amounts of redacted info about the effects and costs, MS's on the payroll of the companies while publically stating their objection. Failure to register their interest. It goes on and on. All to make money.

There were 3 proposed pylon routes near us. One of them DID put a pylon, yes a pylon, not a wooden pole (i have those already) directly behind my house, circa 150 ft from my back window, in my field. Fortunately they have moved on to an alternative (read cheaper) plan. For now, Until that runs into the sand. So may get resurrected yet. If it does i get £1500. Great, as though thats recompense for effectively making my house worthless. Apparantly i should suck it up, its all for net zero. For as long as nothing is built, the house is effectively unsellable, as theres always the risk it comes back. Undergrounding isnt 4-5 times more expensive, unless you read the reports from the companies who are gaining planning for the pylons. Is it more expensive, yes, but nothing like the figures quoted. None of that matters, its only about how much money can be extracted. The environment doesnt figure on the list of concerns. We are not the south east, so, thus expendable. Its all very easy to say its a necessary blight, when it doesnt affect you.

This is the nonsense currently being spouted by Plaid here in wales. Its NEVER going to happen. But, regardless, i dont want a few quid, i dont want a pylon in my garden. Nobody wants a pylon in their garden. Seeing as we are going to spend trillions and bankrupt the country anyway, for the negligible extra cost, they could underground the cables. Then everyone would be happy. But there might be a hit to shareholders, who probably mostly live in the cotswolds!

Yes, but only because we think we can stop or change it.

Thanks. I was being dumb. Had a "special" moment. Worked it out and deleted the post, but you saw it 30kWh for £3k is starting to make some sense. Assuming i can do the install (inc my PV) myself. Although, i still dont really want to have batteries as its all just more stuff to manage and go wrong. Too much electronics for my liking. Need to re-crunch my payback time.

Thanks. Not the easiest website that one. Unless you are an expert. Seems like a cheap way into batteries.

As you do every 3 months or so, you put a lot of effort into these arguments, for what im not sure. Because it always goes the same way. But half this thread is full of debate about how climate change is caused. Does it matter? Its fairly evident its changing. However, and as ive stated before, the idea that if we buy a heat pump and plant some windmills everything will be ok, is pure fantasy. Us meddling about with such wheezes isnt going to have any effect. At all. We are just going to have to deal with it. Expending resources trying to stop it, will come to be seen as one of the greatest follys ever attempted by man. And leave us with minimal resources to actually deal with the consequences.

Good as that all is, and i agree with most of it, the reality is, having been bullshitted and lied to so many times, no one believes a word of it. This crops up quite often on some of the traditional building/rural living groups on facebook. About 98% simply think its a money making scam for government, restriction of freedoms or some other variant. Consistently that is the view. There is alnost no one, sometimes no one at all saying that it is actually a real issue. Thats the problem with constantly telling lies, eventually people realise you are telling lies, and assume everything is a lie. There was a story we used to tell children about it..............................

Are you referring to this? https://www.fogstar.co.uk/blogs/fogstar-blog/lifepo4-diy-battery-builds-made-easier-with-the-seplos-mason-kit?_pos=2&_sid=c779d90ee&_ss=r

Ok, fair enough, used the wrong descriptors, but essentially the key point is science is not "fixed", and thus not "fact" as some like to suggest. What a significant portion of the scientific community believe today, may very well be quite different in 20 years time.

There's plenty of wool already. Farmers bury it rather than sell as selling incurs losses. Which is madness. But unless someone comes a long, scales up to make wool insulation at a competitive price, it will continue to be worthless, and we keep using fossil fuels to make insulation. In reality,bis someone tried to do this, they would simply be bought out by the established players.

I can see that as the contractor was working for you, assuming you personally engaged them that they would hold you liable. They were your contractor. Id be very surprised if, legally, that could go any other way. Contractor needs a cat scan tool. Not really doing thr job in a professional manner if he didnt have one. A completely avoidable incident.

I wrote a house book when I sold my last house, the key feature of which was not to paint over the lime with modern paint!

Well it is. Apart from the fact im on the border of zone 1 and 2 for windriven rain. The good news its rendered externally, base coat of render, but never recieved the final coat. 50 years ago. Its fine, but looks terrible. My current thinking is to use hardie plank or similar rather than try to do a render top coat, whick will give me, hardie plank, air gap, good render, inner leaf, before we get to insulation. So, done well, no water should ever get into the cavity.

As already indicated, there are exemptions for retrofit. But a conversion is treated as a new build as far as im aware. Saveasteading is probably the person to answe this?

All good stuff. Interested as as my 1980 extension is currently just a cavity block wall. 75mm cavity, no insulation. As the house is "compact", i dont want to apply to much depth internally so was thinking of combining it with cavity wall insulation (eps beads) As per OP this is a bit "hydrid".

Hmmm. Science is just current opinion though. If it wasnt, it would be "fixed". But its not. It changes as we learn and discover more.

Are those the "peers" that get paid to support a conclusion. And dont get paid if they dont.

This is all good stuff. And interesting But the point remains, electricity is going to go up, probably a lot. Not down as our gloourius leaders, and some on here kepp saying. There are significant consequences to that especially if other countries dont see those increases.

That wouldnt comply, A plastic duct isnt mechanical protection.

Yes! Scratching around for a old mole plough i can stick on the tractor. But, no idea what im actually doing!!!!