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Nick Laslett

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Everything posted by Nick Laslett

  1. Nick Laslett
    What about 15mm hot to kitchen tap for 800mm farmhouse sink? Will fill time with 10mm be painfully slow? 13m of pipe.
  2. Nick Laslett
    I’m glad to hear you are well. This news is a real dose of reality, puts the minor house build annoyances into perspective. Look after yourself.
  3. Nick Laslett
    Thank you for the reply. I like how thorough you are with your thought processes. I have found many of your threads and posts very helpful. You have a knack for creating interesting discussions. I appreciate that there are a number of variables that effect the water dynamics. My take away is that a 15mm pipe over 10m, could be tee’d and supply two standard showers simultaneously with enough hot water. But if you can, give them both there own direct feed.
  4. Nick Laslett
    Hello @Jenni, what did you do in the end? 1 larger pipe in 50mm duct to satellite manifold, or multiple smaller pipes down 50mm duct? I’m thinking of putting 2x15mm, 1x10mm down a 50mm duct to supply bath, shower & basin.
  5. Nick Laslett
    @Nickfromwales Okay, might have forgotten my thinking from last year when working on the foundation. I have 50mm ducts, so I would but 2x15mm, 1x10mm pipes thru the duct to direct feed the shower, bath and basin. And not need a satellite manifold. Any tips for how to feed the pipes thru the duct? Altogether, one at a time?
  6. Nick Laslett
    Thank you for the feedback. I agree. But I failed to plan adequately before the pour. So in my case it is 2 satellite manifolds vs 7 direct runs per bathroom. Might be able to direct feed one of the bathrooms. I get the message about 22mm for the hot.
  7. Nick Laslett
    Hello, @MortarThePoint, what did you do in the end? 22mm to a sub-manifold? I have 3 bathrooms and six existing duct runs in the insulated foundation, 1 for hot and cold to each bathroom. My plan was to feed a 22mm pipe down each duct, then have a sub-manifold in each room to feed toilet, shower, bath and basin. I wonder if a 15mm pipe is too small to be the sole supply to a whole bathroom? Each bathroom is 10m from the plant room. @Nickfromwales what do you think? How many feeds is it feasible to run from a 15mm pipe? When do you need to step up to 22mm? The main comes into the plant room, where there would be a hot and cold manifold to feed the 6 sub manifolds and direct run to kitchen and downstairs loo.
  8. Nick Laslett
    There are some battles you can fight. This is one where I let the fitters do their standard install (as you describe). Hopefully some airtightness tape to the membrane on the inside will rectify the situation a little. With the scaffolding still up I’m not even convinced the doors they fitted are weather tight. I did all the windows myself with Illbruck Trio tape and other elements of their system.
  9. Nick Laslett
    We went with Smart Alitherm Heritage for the Crittal style look. These frames couldn’t take a glass unit thicker than 28mm, so we had to have DGU. This gave us a U-value of 1.3. Smart were still using the older generation polyamide thermal break. Origin and SAS ( Senior Architectual Systems) have newer designs with polyurethane thermal break or Aerogel, these can get to 0.8 u-value. https://www.seniorarchitectural.co.uk/architectural-systems/pure-window/ https://origin-global.com/aluminium-windows/casement-windows https://www.aluminiumtradesupply.co.uk/43667/part-l-2021-how-it-affects-windows-and-doors/#more-43667
  10. Nick Laslett
    I went with these rectangular Lindab attenuators. https://www.phstore.co.uk/attenuators/lindab-lrca *edit System is a very long way from being up and running, so no idea on their effectiveness.
  11. Nick Laslett
    Like so many aspects of house building, there is no right answer. I read most of the threads here on the topic and was not able to draw any firm conclusions. We went with the Sika Trocal single ply product. https://gbr.sika-trocal.sika.com I did the plywood deck, which I feel is where most of the cost is. A Sika approved specialist installer took one day to install the covering. I will upload some photos later. Of course this roof covering has only been on since March, so I have no idea about the longevity of this solution.
  12. Nick Laslett
    My system is not yet commissioned, so hard to tell the performance of the pipe. I went with this product, CaldoPEX from Enerpipe, which I think was better value than Rehau or Uponor. The specs looked comparable. There may have been some other factors which I don’t remember now. But something made me choose this over the other options. https://ingoodnic.uk/25-25-90mm-16.html They have longer lengths. https://www.enerpipe.de/en/produkte/14262/pre-insulated-pipe/pa/?p=2 On reflection, perhaps the flexibility of the pipe after thermals should be considered. They are very hard to bend.
  13. Nick Laslett
    Just watched the Canterbury episode. I like the suspense of the last few years of GD. You know that COVID lockdown is coming, but they don’t. The timelines with this build did not disappoint. Things went wrong on my build from day 1. You have to embrace all the compromises, perfection is a folly. When the build is finished no one but you knows about all the faults and mistakes.
  14. Nick Laslett
    Another photo from much earlier in the build, showing the ICF blocks on the EPS foundation.
  15. Nick Laslett
    Second photo, corner of house with wall render and mosaic.
  16. Nick Laslett
    First photo is garage, this shows EW-330 acrylic primer on the left and the Mosaic on the right.
  17. Nick Laslett
    It looks like cooling will be more of an issue for you. Does the glass in the southern wall cover both floors? Once the heat is inside a well insulated house, it is very difficult to remove without A/C. My biggest takeaway from the forum when I first started my research was all these well insulated houses were overheating. A certified Passive House tries to balance the solar gain with window overhangs. I put in upstairs UFH purely as part of a summer cooling solution. I also went with solar cooling window coatings, because despite the reduction in solar gain, it is easier to add heat in winter, than cool in summer unless you have A/C.
  18. Nick Laslett
    I also found this 18m Spider Boom in N. Ireland. https://erneconcretepumping.com/new-18m-spider-placing-boom/ And another similar 18m boom in the UK. https://www.danfordsltd.co.uk/equipment/boom-makina-bhd-183/ They have a 13m boom too. OEM website. https://www.boom.com.tr/Products/BHD-18R3
  19. Nick Laslett
    Could the pump truck sit on the road before the roundabout? Biggest pump truck has 60m reach. How tall are the houses in front? I’m sure it is expensive to hire, but might be worth a discussion to see what is possible. https://www.camfaud.co.uk/m65 They also have a static boom that you could combine with a static pump. BVR12c boom has 10m horizontal and 12m high reach. https://www.camfaud.co.uk/spb10-bvr12c https://www.selectplanthire.com/wp-content/uploads/2020/10/BVR12.pdf
  20. Nick Laslett
    I think EWI-226 Aquabase is preferred for XPS and EWI-225 Premium is preferred for EPS. The Aquabase is more expensive. I also found the NSAI certificate, which I find a better read than the BBA equivalent. https://www.nsai.ie/images/uploads/certification-agrement/21_0428_EWI_Pro_External_Insulation_Systems.pdf *Edit timeout, or I would have added this to the earlier post.
  21. Nick Laslett
    Yes. Base coat, mesh, acrylic primer then mosaic. EWI-225 Premium Basecoat Orange Fibreglass Mesh EWI-330 Acrylic Primer EWI-050 Mosaic Render Here is the EWIPro technical drawing for the below ground build up. https://ewipro.com/wp-content/uploads/2022/02/4-Base-profile-with-an-insulated-plinth-and-insulation-system-installed-below-ground-level-1.pdf They spec EWI-226 Aquabase in this drawing. Our renderers specified the EWI-225 Premium basecoat for the walls and the below DPC foundation surround. I never questioned if we needed something different for the foundation. Looking at the spec sheets, EWI-225 is also frost resistant and water resistant. Not sure if the Aquabase is cheaper?
  22. Nick Laslett
    Your assessor is correct. I just checked with the Stroma SAP software. If you use the PCDB entry the SAP result is not effected by the MCS tick box. If you use the default SAP values for a generic ASHP, then the MSC tick box does improve the values. Back when I originally played about with the software, I just used the generic ASHP entry, this is because the software lists the PCDB category as "boiler", which confused me at the time.
  23. Nick Laslett
    Will the engineer sign-off on MCS for the ASHP install? I don’t know if it is of any significance, but the SAP calculation for an ASHP is different if it is not an MCS compliant install. I can’t remember how many points it knocks off. *(Edit) If the characteristics of an ASHP are in the SAP product database, these efficiency values will be used. https://www.ncm-pcdb.org.uk/sap/searchpod.jsp?id=17
  24. Nick Laslett
    We had our Kore Insulated Foundation perimeter rendered with EWI-050 Mosaic, this is their below DPC product. This was about two months ago. https://ewistore.co.uk/shop/external-wall-insulation/mosaic-render-ewi-050-25kg/
  25. Nick Laslett
    Not a recommendation, this was just the quickest PIR board U-value I could find. https://www.kingspan.com/gb/en/products/insulation-boards/floor-insulation-boards/ Table from Kingspan Thermafloor brochure. Need 175mm for 0.10. That is their standard PIR board. They have two other products with better resistance to thermal conductivity, Kooltherm is a phenolic board and Optim-R which is a VIP board. These can be much thinner. Optim-R only needs to be 70mm thick to hit 0.10 u-value. Here is a calculator for another product, EcoTherm board, it only needed 140mm to hit 0.10. https://uvaluecalculator.ecotherm.co.uk/calculator/
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