Mr Blobby

If you mean make it one big window and no opener (I don't think you do, but just in case), don't forget you need an opener for building regs requirement for fire escape.

Yes. Do the pour yourself, that is with good local groundworkers/builder. Don't rely on subcontractors to do it. Take great care with the door thresholds. Ours is a block cavity build. It may be different for timber frame, but our thresholds are recessed with, in theory, structural insulation under the door/window spanning the cavity, like this: This detail is great in theory but almost unworkable in practice. The issue is with the recess in the internal slab. Our contractor dismissed my suggestion to install timber during the pour at the recessed thresholds. He insisted the correct approach is to scrape away the concrete after the pour to create the recess. The result is a complete nightmare. We also have a 15mm height difference from one side of the kitchen to the other. 😕 The expert installers also joined the EPS blocks with clips on the top, under the DPC. This means that it is impossible to get the threshold level without cuttig the DPC and pulling out the clip. 🤷‍♂️ If I was doing it again I would avoid recessed thresholds altogether (they are probably inescapable if you have a slider) to be like this: Window fitters will completely ignore everything you say about this threshold detail. Full height windows are not worth the hassle. Ignore your architect.

Here's our big window with the joined frames as your image. Sorry abot the scaffold in the way, this is the best picture I have, but you can see the join and the fuill height opener, just about. The window is so big that you don't notice the join. One final comment on the windows, and not specific to internorm. Our fitters measured our windows with 10 mm clearance either side of the opening. They proceeded to fit the windows tight to the right hand reveal. Zero gap on the right and 20mm gap between window and left reveal. I think all the windows are the same. None are centered. I did not, in my wildest dreams, expect the windows to all be fitted off centre. It is extremely annoying because we now need to build out the LHS reveal for plastering. WTF would the fitters off-centre all the window? In the kitchen we have carefuly positioned the window so that full-height kitchen units will be installed tight to the reveal with worktop underneath. We can't build out that reveal so the off centre window here may need to be refitted in the centre. Do not leave window fitters unsupervised. One final, final point. If I was doing it again I probably wouldn't have full height windows. We have a poorly-poured kore slab and the thresholds are a nightmare. Much easier to install and functionally superior to have a few courses of block to lift the window off the floor.

If you are worried about frame width, then why the horizontal mullion? Get rid of it. Many suppliers don't do a full height opening window, hence the horizontal in your image. Did this come from another supplier? Internorm are one of the few supliers that can do a full height opener, thats what we have and one of the reasons for using internorm. Looks much cleaner. I'll try and post a picture later.

We have internorm KF410 windows with one large window in two sections, one fixed and one opening. This coupling is actually very good. It is invisible from the front of the window and our fitters actually fitted it correctly (although I am a little concerned it sticks out at the top) unlike our very expensive internorm entrance door to sidelights junction that is a very different design and fitted very badly. You big windows will be supplied without the glazing units installed. For the installation of the glazing units into the frame Internom supply a sealant type stuff, fix-o-round to be applied around the perimeter to supposedly improve stability and sound reduction/airtightness. Our fitters didn't use it (they used packers) hence we have a box of fix-o-round on site. Fitters claim the fix-o-round isnt necessary but I suspect they just couldn't be arsed.

.. but there is no mould on the treated grade 3 ply. Only the cheap substitute sheets. Which are not to the listed spec. I just find it intensely frustrating when trades substitute specified materials for cheaper alternatives to make a few quid at my expense.

Phantom braking, insurance : Agree with both of these, although I don't do long long motorway drives very often so the phantom braking is not a big deal for me. The rest are all things I like. I like the app-service-system, and the suspension feels just right, and I like no-buttons. I hired a Mercedes eq recently and hated the sea of buttons. I'm on my second model 3 and very happy. Although with Musk turning to the dark side this may be my last.

I've just done some basic maths from the builder's invoice for the ply and there is no way that he ordered enough Grade-3 ply to cover the whole roof. I am quite certain that there has been, for whatever reason, a bit of substition here. 🙄

Exactly this. If I was ordering windows again I would get supply only. Then get a few joiners to take several days to install them slowly and properly how you want them fitted.

Yes it is. I should add some context here. The builder ordered the ply and subbied the roofers. My guess is that the builder, as usual, ordered the absolute minimum amount of ply to try and maximise profit. I suspect he didn't order enough so the roofers ran out of material and, to get the job finished on the same day, got a couple of extra sheets from the local builders merchant. Which is less than a mile away. The pictures show just a small section. Only about 10-15% of the sheets look different. Oops, I just noticed the two pictures in my original post are actually the same affected area, so here is the other affected area on the other side of the garage. The mouldy sheets are much lighter in colour (where they are not mouldy!) Is this a big deal? The roof is watertight and so replacing the ply is not easy.

Another day another issue on site. So on our garage flat roof drawings WBP ply is specifed. I checked with the builder and, sure enough, the invoice lists "MALAYSIAN 8 x 4 x 18mm Complies with EN13986 EN636-3 Structural use" Which I think is ok and meets the WBP spec, right? So far so good. However.... Not all sheets are the same colour. Some are lighter in colour and are affected by mould, where the darker sheets appear mould resistant. Some questions: 1. Am I right to suspect that the mopuldy sheets are not the same as the other sheets and not to the required specification? 2. If the answer to (1) is yes, then apart from being really annoying, how bad is this? 3. If this is a problem, then what should I do about it?

For our connection application the DNO wanted to know the big appliances, so car chargers, ASHP, oven, and list the kVA for each. For us the 3-phase cost was almost the same as single phase but that is because of our location I think, with three phases running down the street outside. Out primary reason for 3-phase was to get more solar PV on the roof and the 3-phase car charging. We have, I think 80A per phase (still to a temoprary cabinet) which is more than we need, but the DNO has a fixed price for up to 80A per phase and is quite happy to connect at that level almost as standard practice. The DNO was more concerned about startup current for the (7KW!) heat pump, so I had to send them the technical specifcation. If you do get a 3-phase connection, remeber you need a bigger permali box and hockey stick. Our DNO is a PITA about this stuff.

Thanks for this. Please let me know how you get on and the end result.

Moved the house 5 metres back. We have a massive garden now, way too big, but hardly any turning circle at the front onto a main road. I was so focused on the interesting stuff that I overlooked the basics 🙄 I would have said no to full height windows. Terrible to get the thresholds thermally broken, leak lots of heat in winter, too much solar gain in summer, and don't increase light much. But architects love big windows. Be warned! No bay window type rooms poking out. Nightmare. I would have thought about room sizes and solar panels earlier. I thought I did but we should have made the rear return wider to accommodate more south facing panels. If doing it again I would do things simpler.

The first statement is correct but it does not follow that increasing demand will always uncrease co2 emissions. In Ireland, where admittedly wind penetrations is much higher than GB, at about 50%, and almost all on-shore with no nuclear here, then wind is regularly curtailed at night when demand falls off a cliff. Wind is curtailed because the increase in demand at 6 am requires fossil fuel plant to remain on, close to min gen, to ramp up quickly and exceed total wind capacity. Any increase in demand here overnight when wind is curtailed is satisfied with zero extra co2 emissions as the turbine blades are not feathered. Wind is not curtailed just because of cost (ok there are start costs in the market for fossil plant) but there is just more wind generation than there is demand. The grid stability question here is an interesting one. Ccgt plant running near min gen during periods of low demand is less efficient and increases emissions per MWh. For such ccgt plant the increase in demand would improve the heat rate and reduce emissions per MWh generation. The increase in domestic batteries and EVs charging overnight and smoothing demand will ultimately reduce overall emissions per MWh.