DownSouth

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…

I’m so upset. Something is nibbling my window seals, my first guess was a mouse but not sure they’d be able to balance on the ‘ledge’. So maybe squirrels? I’ll get on to the window guys next week to see how we can fix it. Anyone got advice on stopping it happening again? I’ve done a search and the only google advice is spraying chilli spray on windows, not exactly a long term solution. Has this happened to any buildhubbers before? Any words of wisdom for me? Thanks

Our approach: We had crush which got muddy / sticky with clay over the course of the build. When we were ready to do the drive we scraped back the top, put mot3 and ragstone on top. It’s slightly elevated from the house, there’s a 1.5-3m planting bed between it and the house. It often puddled during the build. Now there’s no issues with drainage on the drive, even after Storm Dave. If it did need to run off there’s the plants first and then an aco drain round the house which collects to a rainwater tank 5000litres. This needs to be able to flow out somewhere else - we have a pond - so if there’s a deluge and it’s already full it can flow into that. So far it hasn’t needed to…

Fleming Homes took us through design and building regs, built into their package. They did our ‘as planned’ SAP and will get the ‘as built’ SAP / EPC sorted too.