Gone West

Although you don't own the hedge the boundary should be the centre line of the hedge plant trunks.

I don't want to rain on your parade, but it would take me years to fill a compost bin that is, what looks like, over 2m high and 4m diameter. That's from my just over half an acre, sounds like a plan for the National Trust. Our compost bins rot down very quickly.

Great job.

Is that measurement to the centre line of the hedge or your side of the hedge?

Yes and then no. I designed and built my own PH but it wasn't recent, it was fifteen years ago, when the regulations were less onerous and costs much less. It took us eight years, doing a lot of the work ourselves. I would do a new self build now, but it would be a turnkey build.

The fresh air is coming from the loft, same as if I had a PIV system.

"On 31 March 2003, they were banned from use on roads in the United Kingdom because of safety concerns. They were all called in and crushed, though a few survive in museums and private ownership."

I have fitted several new windows already which don't have trickle vents. I don't like the look of trickle vents, and retro fitting them seems like much more of a PITA than a small hole on the ceiling.

This is an old bungalow, so is there any reason I shouldn't have ceiling mounted humidity activated vents in the dry rooms?

Surely whether humidity activated or manual, when open, they rely on the wind to work. I thought the idea that trickle vents worked correctly, had been debunked years ago.

It's all just thoughts at the moment, although it would have a thermostat.

Run off the battery system, charged by PVs and off peak cheap electricity.

I've done the very low energy usage, new build, fifteen years ago, this is an 1840s/1970s, single storey, stone build. I learned a lot from the new build and the works I am doing, are to make it primarily comfortable. If I fitted PIV, it would have a simple electric post heater. This would be used for maybe three months of the year and would only be lifting the input air temperature to around 24C. The levels of infiltration would be much the same as in my new build.

@Redbeard, @JohnMo, @Nickfromwales, @Mike Many thanks for the comments, plenty to think about there. Sorry to the OP for derailling his thread.

I've just bought 26 lengths of 63x38 and 89x38 treated CLS from the local B&Q, and I was pleasantly suprised. It was pretty straight and had been stored under cover. I know it was a small order but I was happy. Very different from the crap I was often delivered from Jewsons when I was building my TF house.

So if I ducted the PIV to the dry rooms then the dMEV would then suck it out.

I'm gradually replacing all the windows, without trickle vents, in my old bungalow, and was going to install a PIV unit, and decentralised Mechanical Extract Ventilation (dMEV)) in the bathrooms and kitchen. Is there any reason that is a bad idea.

Well done, it's a credit to you.

An oil boiler is cheaper to run than a gas boiler. There are also modulating oil boilers. https://sapphireheatsolutions.co.uk/

Assuming your dimensions are external, your roof slope would be five degrees. There are very few tiles that can be used with such a low angle. There are some sheet tiles that would be suitable. The wall plates would be the same width as the wall.

It will only get worse . I started my first new build when I was 59 and it was fine. I'm 74 now, doing a renovation and am knackered.

Yes I am aware of that but @joth said "it's definitely a monobloc" just from the picture of the back of the unit, so I was wondering what the back of a split unit looks like, that is so different from a monobloc. It looks like @-rick- has provided the answer.

What is it that looks different between a monobloc and a split system ASHP.

I don't know much about ASHP, but is it a split system, and they're not water pipes.

There's a couple of companies one is magicman.co.uk https://magicman.co.uk/