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That's nuffin @Russell griffiths - A hamster ate my underpants

I did try to say! 🙄 No, not the way I discussed above - for single cables, much tougher for multiple. Just cut a square of EPDM (0.7mm) punch a hole just smaller than the diameter of the cable (or its smallest dimension for the flat stuff - invention of the devil) then just pull the cable through the hole and tape the square of EPDM to the airtight layer

Yeah - it definitely doesn't run backwards or have the heat/cold kwh registers that some models have so agree it can give instantaneous output and possibly if I understood modbus or whatever could give telemetry but I don't and suspect it would need extra modules to do so?

Wastage costs an absolute fortune. 10% often gets added as default, and trades are very happy to not use offcuts or measure (plan) in advance. Materials are typically 40% of a project. So imagine a 500k project x 0.4 x 0.1. That is 20k of wasted material. It then goes in the skips, typically thrown in loose , costing £4k? The only argument some will understand is: if this was your project, how much waste would there be? With your skills, let's work together on this. That timber will be a noggin. It remains much stronger than it looks. For its' like, I may have to collect/denail/ clean and carry indoors myself and instruct firmly. Really bad bits will become raised beds or nature piles.

Probably a daft question but is there a need to use ventilated fibre cement tiles in places on a pitched roof if when using a breather membrane. I suspect not but thought about belt and braces option. My current roof has old bitumen felt under fibre cement tiles, is ventilated at eaves and has a few ventilated fibre cement slates in places for airflow. Thing is old roofer actually cut through the felt just under ventilated slates and this is allowing water ingress in places. Also is there a need to leave an air gap between insulation and breather membrane when using an air and vapour open memnrane?

I hate wasting, in actual fact I'm a bit of a hoarder. Would definitely make use of the timber in some meaningful way, maybe to use as noggin between adjacent floor joists etc.

Agree with @BotusBuild. Aco drain will work well here. Hopefully there is somewhere you could connect it to at the end.

Couple that to heat pump monitor, that will add an electric meter, a few bits and bobs, and you get full monitoring. We have the same heat meter. 4th or 5th push of the button also gives you kW as an instantaneous reading. You have dT available to read. Will give stuff like this, it's ace for understanding what really happening.

Not a lot of software on our heat meter, it is a Danfoss Sonometer 1100, it has a screen you cycle through that gives you live readings for flow and return temp and volume and a calculated heat transferred in kwh measured since the unit was new, nothing else.

Before you fix this, can you address the issue of the water running onto the path at the top, some kind of redirection. Maybe consider some Arco drain to redirect the wall to the far side of the path or a soakaway or drain. I would be looking to power clean the cracked area before applying anything. Whatever you apply will need a stable clean surface. There are various rubber or bitumen based sealants that may work. The ultimate fix is to relay the concrete path and introduce some diagonal grooves in the surface that direct the water away from the building and down the path. Bad text diagram following - connect the diagonal together for continuous grooves. |\ \ \ \ \| |\ \ \ \ \| |\ \ \ \ \| |\ \ \ \ \| |\ \ \ \ \| Or, more simply, have the path relaid with a slope away from building wall

Just reread this. Not sure your expectations will match reality with wet UFH. So to throw a spanner in the works. Modern well insulated houses don't have warm floors with wet UFH, the UFH flow temps are just too low. You max flow temp is likely to sub 30 degs at the coldest outside temperature, and that doesn't give a warm floor. You won't have cold floors either, but the floor really will not be noticeable warm. Typically floor surface temps are 1 to 3 degs warmer than air temp depending on heat losses.

I did try to say! 🙄 Sensible sparky the one I work with, and he is hot on the solar and ev cabling and derating even for less than 400mm.

Image of failed edge where I have hammered off some of the concrete and bits of rubber type mastic.

Equestrian barn damp floor inside. I have just started to tackle the sloping edge on the outside. On the outside, there is a failed concrete edge between the ground and the concrete block wall. I have chipped away lose concrete and bits of rubber filler. I am about to apply new sand and cement mortar. Thought I'd check if this is the correct approach or should I use a rubber filler? Or is the concrete edge making things worse and should be removed, which would be difficult because it is solid. When it rains it is like a rainfall running past because it runs off the track and straight down past the barn.

Trying to airtight single cables is a PITA, plus the conduit acts as an insulator giving the cable some separation from the insulation. I would not consider this optional, more of a must! Derating for 400mm is OTT btw, but not much cost to go from 4mm to 6mm so may as well, just a non-issue afaic.

If the screed has a maximum thickness of 32mm, sitting on plastic with no bond, and that on chipboard, what chance of it staying in place? We take chances, but not that one. It was a decision made long ago, snd we are stuck with it. On a positive , saving 20mm of screed or so pays for the eggbox. Btw. I surveyed the ground floor screed in advance of the shadow gap skirting. Awful! 25mm variation across one (big) room. They didn't use level control, just flow and checks on minimum thickness. The steading was done with the little triffid tripod thingies and was great. I did question the methodology but was assured of their 'expertise'. The tiler will have his work cut out too!

Another good idea. I'll discuss with him.

Good idea. He is all over the airtightness aspect fortunately.

He explained that the cable remains live until it gets to the inverter so it is to isolate the cables as close to the panels as possible for safety

I assume he’s running them them in 25mm flexi conduit, not directly sat in the Warmcell? FYI, we’ve done this on every MBC build, conduit and cables through the cellulose, so zero issue to worry about other than weather and airtight sealing.

Woodpecker ate my bloody facia board, !!

We had an experience like this with a PM early on. Didn’t last long and we chalked it up to experience and was so relieved when I told them we were going to draw a line there. Reading this thread fells strangely familiar and I really hope it starts to improve for you. Our architect also proposed zinc standing seam at the design stage. We ended up going for corrugated steel (galvanised, plasticol-coated) sourced from an agricultural supplier - really pleased with the product. When it came to the flat roof detail from the architectural technician (single ply membrane) I’m so pleased I was checking everything - spotted some significant issues that were thankfully caught early enough. I thought that would be it - the flat roof build would be simple. How wrong I was. The small flat roof took longer to install than the timber frame company took to put the whole house, roof and internal walls up. I had an insight into this one day when I happened to be on site doing some design checking / thinking for service runs inside. Weather was due to turn at midday; they hung around in the van most of the morning, started moving material up around 11 and then. When a few drops of rain started (as forecast) at 12 they were gone in a flash! Thankfully The ply seemed to have been installed to a good standard, but because of the time taken, there was a period of trapped water that briefly gave concern before we could get access and clear the issue. Quality of workmanship, and attention to detail has been a frequent area we’ve battled. We’ve had issues with our SE and piling company, and as frustrated as I get sometimes, I always try to have a conversation before sending emails and pair down how I get across my concerns (even though on more than one occasion I’ve been proven to have been right and could have been more blunt - I can tell from your posts that you’ve tried doing it exactly the same and have been let down). Some of the best advice I had from a friend was that, unfortunately, you have to ‘be that guy’ and really micro-manage these projects. This is the opposite of what I experience in my day job where we actively seek to empower and set the conditions for people to know what they’re doing.

Back propped against the padded furniture. Comfy

Don't worry found them! https://shop.leachs.com/products/bigben-hurricane-scaffold-ground-anchor-900mm-pack-4

Hello, where did you get your helical ground anchors from please?