JamesP

@flanagaj Like you we are south facing and have no shading so do overheat. I plumbed for AC in the first floor bedrooms and the main family room as seemed simplest to install. We have PV so running cost is offset and have ASHP for DHW and heating. We cross ventilate in the evening to purge the house as @Russdl. Would consider built in external blinds ( no view, natural light during the day) and solar glass next time.

Definately deserve a beer but careful now as you will be asked to make fitted wardrobes next! It happens. The Kreg is a bit unnecessary as cheaper tools for hinges are available.

I have just done this, WC, shower, sauna and a kitchen sink. We have a Vortex TP, simple but functional design with an air bubbler. Its about 30 metres from the house. No penetrations through the building as @Nickfromwales mentioned. Scrappy image below.

I have a vent pipe about a metre before the treatment plant main inlet and an AAV just above upstairs WC. Did not want a vent pipe penetrating the building. BC happy with that.

I have been using this on Cedar, did buy 5 tester pots of different product but settled on this: https://www.protekwoodstain.co.uk/wood-stain/timber-eco-shield-black

Eminence Front by The Who, Tenth album "Its Hard". 4 tonnes of MOT, no thank you unless you have a digger.

Join the club, half the load and twice the trips.

Had a quick look through the invoices and need to add Anhydrite Liquid Screed to the ground floor, took them a couple of hours. Not working full time (stay at home Dad) and not a builder by profession.

Paid for the electrician, skimming, window and ASHP installation (RHI). My father (82 years) helped me get the frame up to the rafters. Took 3 years before moving in and still finishing off after another 5 years. Still enjoying it.... Came in about £800sq/m but start was in 2017.

I fitted resilient bars, separates the plasterboard from the floor joists and supposedly helps with reducing noise. @nod will confirm? Noise not an issue if single storey but would get you under the hangers.

We have a Fronius IG-TL 4, nearly 15 years old but both my brother and father had theirs replaced under a 20 year warranty due to failure. @mk1_man Thanks for this, I would consider a battery option to be charged on a decent night rate tariff to then consume during the day. If possible being able to top up with any excess PV after the PV diverter to DHW has maxed out. Think the cost would take 2-3 years to recover.

Hi John, Can you confirm your figures above.

Thank you, much appreciated.

Head explodes! Thank you.