SuperJohnG

This surprised me I would have thought ground array woukd be cheaper, but when I think about it now it's not as obviously a lot more structure required.

Circa 2.5k when I checked previously around a year ago.

Just depends how they pay it and when they get the scheme going, God knows why we can't just do things at the same time here. Did you get going yet with yours for RHI?

So you didn't buy at the point of doing the roof? Just fitted the trays?

So rules states it needs to be 1100mm for safety to kit fall over it but if a fire escape has to be lower? Which one is right?

This is quite interesting and I'll maybe look down this route having planned a DIY install already to compare the two

These pictures are amazing. (Pretty sure I seen them on insta too so we must follow you guys there). I have 14 acres ny dad bought ona whim 30 years ago for 1k. I had it valued a few years back but the sales guy said that any really big oaks go for for £10k, seemed very high so take it wotha pinch of salt!

I'll see if I can look out a few pictures.

Makes no sense either to some degree in Scotland thats why we have local authority building control. The whole thing of a structural warranty continues to be a joke.

I put rebates in my slab as part of the pour so I could have flush thresholds. So there are 50mm bits where the my 5m wide and 3m wide sliders sit. It was all then packed up to suit a 4mm LVT flooring, plus I made an allowance for a 3mm latex screed as my slab wasn't power floated. Worked out well. My underfloor heating is below my mesh attached to the insulated foundation with mesh on top ( but castles keep it off the pipes.)

Would be interested to see your survey costs vs actual premium price?

Just got a quote....what was £2800 before is now £9500... what even the fu......... I hate structural warranties.

Been a wee while since this thread...worth an update if anyone has recently purchased any panels?

Ah...shit I want to. But I'll need to rip all the slates off, then install trays, and my slates are on sarking, which is on counterbattens, nothing shy of a nightmare. This I can add, then just open it up when I required. Seems silly not to install the panels just now but at least I can leave a cable. Need to look at how the wiring works.

I do have ducts back into the house plant room from outside, so can run a cable any size in at any point. By shed - I'm thinking agricultural easy, 10m x 6m so should manage a 4kW array up there no problem. I could run cables inside the main house in case I ever decide to add PV on that elevation and rip the slates up but maybe need to do some research before I close it up inside.

Definitely a missed opportunity, which I feel a bit sad about but such is life. I do have lots and lots of space and planning a big shed up the back so that might be the saving grace to stick it up there.

30p? why midnight onwards? Is this foreseeing batteries as a no use during winter? due to high costs to charge now?

I did want to do it, but unfortunately we had major issues with the roof getting fitted and generally the workmanship from the suppliers subcontract team - which basically burnt all my time at the point. I'd worked out at that point (I was around 65/m2 for supply and fit of slates) that it might only cost me £1000 but there was too much going on and I didn't have the time to work out what needed done, coordinate it with the roofers and get it sorted. The only option was to hand it to a company to do - but they wanted north of 8k to supply and fit panels and I knew I could get them supplied for £2.5k. All a shame really. I don't think I could fathom ripping the slates up just now - just so hard to plan and redo. Boxing the beam and good attention to airtightness all planned, the point around doing ceilings only might lessen the blow and be a good shout.

Thanks, very basic calcs based on 17p/kWh at the moment gives the following costs over 20 years, based on % energy price rises per year:

Currently thinking about January rises. Over the next 3-6 months I'll need to make some bigger purchases such as ASHP c.£5K, MVHR c.£5k, cylinder £1k - I was considering buying these just now to avoid any further increases throughout the year. But It'll be likely 6 months before I need them. What's the thoughts on getting stuff early or not worth doing? Cash would likely be from the self build mortgage so interest payable to balance it up.

I'd have liked solar panels, but couldn't make the maths over at 2.5k for them and was stuck for time. Most other things above are covered already. But makes sense to look at other areas. Thats the sort of info I'm looking for, so can I just base that on the surface area? Then pro rata a cost for the electricity? Thats seems even harder. Woukd be much more work doing thus over a sip panel with deeper studs unfortunately. Their will be a service void above whatever the final internal layer is.

We haven't done the internals yet so still do sort gaps, airtightness etc. I can't remember about the other side actually, but this was the side with the sun. The other side does stay very cold as it never sees the sun in winter. That is the bit I think I would like as it will remove all those cold bridges in the timber's in the roof panels and at points in the wall, albeit any joining ones are SIP splines in walls.

Lol, I knew you'd say that. It's just so expensive, and I must have caught another £30k of unforeseen already which is painful. Did it take you long to do? I guess you just screw it on, tape it, VCL, then screw battens all the way through to the SIP panel?

Unfortunately I have a steel ridge beam that bridges the apex in between the panels - not a very good design. But I have planned to cover it internally with 50mm (more if I can) PIR foam around the edges.

I already know the answer to this question will likely be a resounding yes, even in my own head I think yes just get more for all the right reasons, it'll reduce the energy usage/ it's too hard to do later/ Later I'll wish I'd done it. But - I've not currently planned to do it. SIPS kit with 169mm wall thickness, with 219mm thick Roof section. We have an insulated slab for reference Current U Values: I have been considering adding 50mm PIR internally on the walls and roof, I'm nervous that we will get in and I'll regret not adding it. This is somewhat driven by when the snow came a few weeks back I took the picture below. You can see the snow still solid on the canopy section, but right behind it melted quite quickly above a section which is my open plan area. Now the internals haven't even started so it will improve from there but you can see the difference with the snow melting there. So i am at a conundrum right now, I shoudl move inside in around a month, I've been at it a year already costs are above budget significantly (nothing horrific that I can't eventually afford) so hadn't allowed the costs or more importantly the time but also thinking I shoudl just suck it up and do it. I shoudl maybe look at the U value increase for the adding 50mm PIR then assess from there, cost will be around £4.5k plus VAT for the PIR (500 sqm). Or do I just focus on doing the airtightness aspect as this will make a more significant difference? as I am already a t a decent level of insulation in the SIPS kit. Bear in mind - I currently live in a 1975 thermalite block house with on ceiling insulation (done badly) and it's as leaky as a sieve.