Nick Laslett

@nod are you sure about this? All my soffits/undercloaking is cement board. It has been up for 2 years, paint seems okay. I’m pretty sure I just followed M.I. on how to paint; use SBR primer. Of course this use case is completely different to what the original post is asking. https://www.sts-board.com/wp-content/uploads/2024/05/STS-Construction-Board-Product-Leaflet_2024.pdf @Adam2 did you go ahead with painted cement board as you suggested in this thread?

I posted some links on this topic in this earlier discussion. A recirculating hood is the general consensus for the most straightforward solution when you have MVHR. You can still have direct extract to the outside, but there are a number of other factors you will have to consider.

So, seriously are they worth putting on wheels? My unit is still to be installed. But it is easy to access and I can even use my sack barrow if I need remove it at some later date. I have two DeWalt Construction Jacks which can lift 150kg per jack. https://www.dewalt.com/product/dwht83550/dewalt-toughseries-construction-jack

Hello @Jeremy Harris, welcome back. I thought of Jonathan’s video as I was reading the first post. I have taken so long with my build that I think there have been two iterations of the Sunamp whilst I have been building. I now have a Sunamp Thermino 300 ePlus in my plant room waiting for me to plump it in.

I don’t have a strong opinion, happy with all of them, but for the sake of making a decision, I would say The Crown in Stowupland, mainly because I haven’t been there the most recently, so will make a change.

The Kings Arms in Haughley, The Bull in Bacton and The Crown in Stowupland are all fine pubs.

IP31

I agree with @Conor. I did not notice any specific issues with the slate/flashing interface. There was a foam tape you run along the flashing, that the tile rests on.

This tread has been some of the best alternative Christmas entertainment. Needs a good cliff hanger for New Year’s Eve.

I followed the Siniat GTEC materials. Page 22. https://media.siniat.co.uk/pi48603/original/-1830867374/siniat-drywall-manual-s5-floorsandceilings-v1.0.1_wm.pdf The reason for the different measurements, is that it depends on the overall weight of the ceiling.

So many gotchas with ASHP configuration. At least this is something you can control. This is the other topic that is a real challenge to solve. Lot of design thought needed if you want an efficient reasonable cost DHW supply. Traditional plumbing would just brute force this. I’m sure the oversizing of most HP is due to DHW reheat times. If you have showers happening in succession it is a good candidate for Waste Water Heat Recovery, but not always easy to incorporate into a build. Unfortunately I don’t have any answers for this, my simplified assumption is that my solar will contribute to the cost of DHW for 8 months of the year, and for the other 4 months, low cost tariff direct electricity. If you have the space, a bigger tank to take advantage of the cheaper rate electricity and just store more hot water. Of course it would appear that things like solar, batteries and EVs are all need to get access to these better electricity rates.

Yes, I used this mesh at the top of my cladding. Seems fine. Do you have a particular concern? I didn’t put much thought into this particular purchase. I also used it on my soffit vent strips.

I’ve not looked at this for a long time, so please take this comment with a degree of skepticism. The Zehnder ComfoAir Q600 is suitable for a house up to 350m2. Not sure how accurate your 390m2 measurement, but maybe 40m2 is not enough to really discount the Q600. My understanding from other posts on BuildHub, is that the Building Regs requirement for air supply is too high and after building controls signoff they dial back the MVHR settings.

I’m actually getting very close to my air test. Early January, hopefully. The solution I used is no longer sold into the UK market, it is from Germany. We wanted a very quiet cooker extractor as we have an open plan kitchen. We went with the Berbel extractor and the Wall Box accessory, which connects to the extractor and opens the vent automatically using a motor. Spec says >40PA for the wall box opening. https://www.berbel.uk/extractor-hoods/accessories/exhaust-accessories/wall-box/ When I looked more recently, I saw there was another product now on the UK market. https://luxairhoods.com/Cooker-Hood-Ducting-150mm/cooker-hoods-outside-vents-grilles-external/Airtight-Ducting-System-Kits?srsltid=AfmBOor176UUNI2MTtZdpI9A2SZBl2x7Bir3KZKSyicPgC3GHIE6BwXW The other area that is worth exploring is butterfly valves in the duct. https://quiet-vent.com/products/dampers/quiet-vent-motorised-circular-damper/ I assume that MVHR professionals will be familiar with other options. The Passive House Institute guideline I linked earlier covers the design requirements for extracting to the outside. This is the only PHI approved product on their database. https://naber.com/media/52/7b/ce/1688370360/NABER-Compair-Bixo-Broschuere_EN.pdf Like a lot of house design choices this forum in very pro recirculating hoods and there is nothing wrong with that approach, but a bit like asking for recommendations for oil fired boilers, I would guess must members wouldn’t be leaping to give advice.

This is a well warn discussion on BuildHub, you could call it a hardy perennial. Nothing wrong with recirculating hood, but you can extract to the outside as long as the vent has an air tight seal. There is a balance issue when doing this, but might not be significant enough to cause problems. If using a recirculating hood, you can put a filter on the nearest extract plenum. Again some installs have filters on all extract plenums. As with any thread on BuildHub, it is a lottery whether you will get a good community response and a plurality of views. Here is a link to a recent previous discussion on this topic. Also here is the passive house guide on the topic: https://passiv.de/downloads/05_extractor_hoods_guideline.pdf * Edit: I notice that the topics are in two different parts of the forum, part of the joy of BuildHub is the complexity of forum structure, some topics have multiple potential homes, easy to miss.