ProDave

We paid a builder to do the foundations, and build and erect the frame. Since then I have done everything including the roof tiling, exterior cladding, insulation, plasterboard, wiring, plumbing, internal joinery. The only thing I got somebody in for was the external rendering and internal plastering. I should just scrape in under £1000 per square metre.

Mains cables have to stick to safe zones so you are stuck with where they go. No such restriction for data cables so move them out of the safe zones away from the mains cables.

I have seen sliding pocket doors with recessed flush handles that slide right into the pocket, then a little fold out finger pull on the edge to retreive the fully hidden pocket door.

Almost got me. But "Does not post to Scottish Highlands". Aaaaaaaarrrrrrrrrrgggggggghhhhhhhhh Any reason not to buy this one? https://www.ebay.co.uk/itm/Altecnic-ERES-12-Litre-Heating-Expansion-Vessel-Sealed-System-Kit-EasiFit/221958453674?hash=item33adc139aa:g:OhYAAOSwwmlZiA0K 12L for only a couple of £ more and will post it here. Anything wrong with being bigger than needed?

If it gets to 90C it will be the first heat pump in history to do so.

I worked it out on 300M of UFH pipe and 30M of 22mm and that came to 50L Add a bit for 2 manifolds? Need to add the volume of the heatpump input coil on a 300L Telford tank.

So based on a total 50 litre volume, what size expansion vessel?

What are you trying to achieve? Putting it in "conduit" encased in insulation won't stop you having to think about derating the cables and the earthwool won't harm the cables so is seems a pointless exercise. Be sure to well and truly de burr the ends of the pipe.

Re the FIT. I have always thought the system we have is bonkers. Initially the FIT rate was way too high (not complaining I am still benefiting from it) Now it is way too low. (I AM complaining about that) I also object to having to have an MCS contractor install it to claim the FIT which we all know pushed up the price a LOT. A far better system would be no equiment subsidy, no need for a special installer, just a normal electrician who will issue an EIC as he would when wiring a new house, and a fair payment for exported power with a meter that actually mesures export and pays an actual metered rate, not far below the import rate. Reading this thread, and on the basis I am almost certainly going non FIT, I will probably just install mine and say nothing to anybody. I will be doing my damned best to use it all so not much will "escape" anyway.

A generous estimate of volume puts my system at 50 litres so I don't need much expansion room. Can the over pressure valve go anywhere? i.e outside on either the flow or return pipe to the ASHP so if it blew it would vent onto the ground thus removing one of my objections (need to vent the blow off)

Watching a novice with a cordless is nothing compared to a novice with a hammer and some nails. This thread pains me at discussing ways to spend money and time disposing of something that others would find useful. For heavens same just keep posting it on freecycle until someone comes and gets it.

I have never cleaned with any solvent. Fine steel wool will have it shining bright, flux on straight away before you even touch it with bare hands. The fittings are going black because you are getting it way too hot. And looking at the "subject" joint, I can't see you are end feeding it? I personally like to end feed a bit just to be sure, and you definitely know it when you have done so. Another mistake I see (even some plumbers) is they are too quick to grab the joint with a wet rag and clean it all off while it is still hot. I prefer to leave the flux while it is cooling and only wipe it with a dry rag when it is pretty cool.

Now go and propose you are installing a HUGE electric boiler and the voltage DROP will exceed permissible limits and you demand they upgrade their infrastructure. Throw in a non inverter driven heat pump with a huge start up current for good measure. I would be interested of you could get an electrician to measure the loop impedance at the supply point. Or even if you could do a quick and dirty method (I will tell you how if you have an ac volt meter)

That looks suspiciously like it. @newhome wins the virtual hug. But at 91.76 € I may need to find it a bit cheaper........

I used to repair and sell tv's and someone asked me to deliver. Turned out to be a crappy basement flat with no parking so had to chance double yellows and when I struggled to get the telly down there, I found there was no aerial. No sale that day and never ever again delivered.

Well I always have fun and games with a terrestrial signal here. We are in a bit of a valley, over the brow of a hill from the local transmitter. At the previous house as a temporary measure I put the aerial on a short pole on a shed on the highest point of the plot. When the house was complete I moved it to a pole on the gable end. Same aerial, but higher up with a clear view in the direction of the transmitter. I tried for about 2 hours to get a decent signal and failed, so I put it back on the shed and it remains there now. At the new house I put a short pole on mt scaffold storage rack next to the static caravan. The signal from that is not brilliant. I wanted a tv in my office in the house. I was not ready to sort out a proper location for an external aerial so I tried one I had. It was a well built monster of a band A aerial. I gave the elements all a bit of a haircut to move it more towards being band B and put it in the loft of the new house. It works reasonably well though get some break up occasionally when it rains. Satellite is more reliable and is what we use most of the time.

Anyone travelling from the Borders to the Highlands with a roof rack? they can bring it up to me.

Unless it is REALLY rusty, put it on freecycle and let someone collect it and make use of it.

It ties all the joist ends together (I know it as a ring beam)

You need to look up how far you are from the nearest transmitter and what the signal strength is like to determine the size of aerial needed. A lot of the "posh" looking ones have a reputation for being rubbish, particularly not very strong, but that is not an issue for an indoor aerial. THIS guy talks a lot of sense http://aerialsandtv.com/loftaerials.html

Yes indeed it is. I have seen it so many times using this sort of plastic bottle thing as the feed & expansion for a brine loop, mostly for GSHP's, I thought this is the way the professionals do it, so I will buy one and do the same. I never dreamed it would be so hard to identify and buy one. NEXT time I see one I will ask the installer.

Ouch, £5K for scaf hire. You could have bought your own Kwikstage for that and then not been pressured for time.

No way too late for that, that would have required thought when the foundations were going in.

Back to my search for this header tank / bottle thing. I have found a couple of pictures of the thing I am looking for: Top right filled with a blue liquid: Top left filled with a pink liquid:

I need one of those. The plasterer hasn't showed up this morning and is not answering his phone. God I hate relying on others.