Stratman

I have downloaded the manual and it says it does have a direct air inlet at the back (also shown on the diagrams - 100mm diameter). I've had a duct cast through the slab to outside.

Thanks - yes, it'll be 5kW nominal (Ecosy+ Infinity V) and the lounge where it will be is open to the hallway/stairwell. I chose the Infinity V as it has very low distance to combustibles: only 50mm

Yes, I understand it will be an expensive way of adding some heat a few times a year ...not sure why I'm going along with it!

Both useful suggestions. Thank you. Does the insulated sleeve get cut back to the external face of the OSB then taped? What happens as the twinwall passes through the battening void and then the timber cladding? Presumably there would have to be a 50mm gap from the edge of the flue to the combustible cladding.

Apologies if this has been concluded elsewhere on the forum - I've trawled and was unable to find a solution. My timber frame is up, windows in, roofing on, cladding commenced. I understand the sentiment surrounding log burning stoves being an expensive folly in a well insulated home, but we are determined nevertheless. The issue is that I cannot seem to find conclusive advise on the detail to pass a twinwall flue through the external timber frame wall at a 45 degree angle that satisfies building regulations and hopefully prevents the insulation from melting and the house bursting into flames ...which would be a bad thing! I've found Schiedel products such as the Ignis but the diagrams and discussions never seem to match my build up which is: AI helpfully suggests a gap between the flue and combustibles left completely empty with no insulation or airtightness!!! Can anyone help, please? Preferably with a solution that has actually been installed and signed off by building control. Thanks

We recently had self compacting concrete insulated raft with UFH fixed to the steel mesh. We were told it is as good as a power floated finish. It is not. Dapple bar ridges prominent, high areas needed grinding back. Not happy - should have ignored the hype and stuck with power floated.

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

Thanks - the TLC guide explains the issue well and how to overcome it. Discussed with installer and he has already compensated for the derating by increasing cable sizes from the panels to a rotary isolator in the loft space.

Hi there! Getting ready for roofing and in roof PV panels on our MBC build. PV installer says he'll run cables from the PV panels through laps in the roof felt, through the 400mm blown cellulose void between rafters (going in after) then through the vapour barrier below the rafters. Do you have any thoughts about this as I am a bit worried about cables overheating and causing a fire. Is this an accepted approach to cabling?

Good reccomendation thanks. I've found this one really informative. Lots of step by step detail and well edited: https://m.youtube.com/@TurningRosemountUpsideDown

I recently saw a refurb where the newels had been beautifully overclad in oak. i would never have known, it was so well done.

Not a deal breaker for building control, I agree, but if I provide ample accurate data, I expect them to use it. Also, to improve the result they suggested doubling up on PV which would have cost me unnecessarily.

I just got the design stage SAP report. Rather shocked at the predicted energy rating of C despite it being a build with high insulation, triple glazing, good airtightness , etc. So I read through the calculation worksheets to discover a load of errors. U values higher than the MBC thermal modelling that I sent them, MVHR completely ignored, generic oversized ASHP used, wrong building dimensions (like 30% greater floor areas and storey heights!). Entering the correct ASHP alone has dramatically improved the results and I have insisted they redo the whole report using the information I provided. Very poor effort. I suggest checking any report or calc you receive and don't be afraid to question and push back if it looks wrong to you. We pay good money for services like these.