DownSouth

I wondered if that’s why the top room was presented as an office - because surely you’d need a fire door otherwise. I liked the cladding design, thought the overhang was clever. Loved that his grandparents got to see it built - no sad GD bits and little jeopardy, made a nice change!

You might not be interested in cooling yet but you’ll need to meet Part O building regs and it’s better to think about that from scratch. It can significantly affect design (window size, placement, type of glass, shading, etc) all of which change the way your house will look. For example you can mitigate larger south facing windows with shading, cooling, cross ventilation but if you don’t think about it now you might end up with blinds down all summer. we went for UFH both floors using aluminium spreader plates between the joists for 1st floor. If you design in at this stage it’ll be a simpler job to fit it. We put UFH both floors as not all rooms upstairs are bedrooms (eg office) so we wanted the flexibility of heating it and also (like @Indy’s builder) thought it would be a hard sell if we had none.

We used the Cladco composite deck boards. They do 2.4 or 4m lengths, four colours, one side wood effect, one side grooved. We laid it groove up, easy to DIY fit. We had it in the last house and were impressed how easy it is. Just need to brush and wash it down now and again. We’re really pleased with it.

We bought a Dolle Arundel straight staircase. Steeper than standard stairs as it’s a space saver, but quickly got used to it and it was sturdy/ had a hand rail. Passed it on once we were done to another self builder nearby. It was up for 18 months so well worth it to us.

@JohnMo @Nickfromwales thanks to you both. Adjusted the preset fan speeds for the low, medium (preset ‘2’) and high settings. Then retested the supply (extract was ok) starting with longest run, worked back from there checking balance after each one. Kept it on setting 2 for a bit, now on the lower setting which is 30% less, working perfectly 😊

Thanks for the image of someone dismantling this many years later and being covered in beans 🤣

Thanks. It’s 216m2 over 2 floors.

It’s a radial semi-rigid duct design which is continuous from the unit to the room valve, testing with all doors / windows shut and cut outs under internal doors to allow flow. Same number in /out. @Nickfromwales would this comment apply to radial set up?

https://www.international.zehnder-systems.com/en/spotlight/detail/6-common-mistakes-when-installing-and-commissioning-ventilation Our problem is that all the supply valves are effectively being throttled to get down to the per room flow rate.

We are setting up our MVHR. No issues using an anometer and the extract rates are bang on. However for the supply we are having to restrict the flow through the pipe to such a point that it’s all coming through a small gap, creating noise and it’s throwing the balance off. zehnder say to commission at the medium speed (their default is 235) but we just can’t get the supply right. Should we be adjusting it to the total air flow needed for this actual build which is ~160. we’re giving up for today but grateful for any tips!

https://abi.bcis.co.uk There’s a free rebuild calculator. You have to register but it allows 3 calculations every 12 months.

Weirdly Victorian Plumbing do 800,900 and 1100 pentangle showers - but no 100 🤷‍♂️ But QS Supplies have this one https://www.qssupplies.co.uk/bathroom-furniture-shower-taps/274018.htm?gad_source=1&gad_campaignid=17336560494&gbraid=0AAAAAD-qEFAo1RFcjedyK7pN6d5A7-JDy&gclid=EAIaIQobChMIzLrEqIjZlAMVfo1QBh3FaBeBEAQYBCABEgIb8_D_BwE

@Super_Paulie Any reason not just go for a quadrant shower? The curve doesn’t take a lot more out of the room.

@junglejim Do your heat calculations say you need a pump that size? If it’s close to passive I’m assuming it must be a massive house you are building to need that sort of size.

Did you replace the trim yourselves or get someone in? I haven’t tried pulling the strip out yet but I’m assuming it’s a cosmetic thing, rather than anything we need to tackle urgently. We’ve moved in, still loads to do - could have done without another job and more expense ☹️ Hoping it’s a simple fix…