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Adam2 last won the day on October 16 2018

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  1. Agreed it is a bit of a loss. I think regular triple glazing will be in the region of .5 to .6g so not as extreme as it may sound going to .3 + the heating requirement (exc solar gain) seems to be a pretty low requirement so for my situation I think this feels like the right balance. Every situation is so different and so many considerations.
  2. Adam2

    How to get Howdens prices

    Had a kitchen from them 3-4 years ago. My builder had an account - insisted on seeing their invoices, it was worse than double glazing I kid you not - 70% + discounts on kitchen cabinets etc.
  3. Can't Trump that ^ I'm in a fairly similar position and am planning on low g glass (0.3) so most of the solar energy is blocked by the glazing. We have ~54m2 facing SW with minimal natural external shading. As contingency, should the combination of glazing choice and use of ASHP with cooling mode + MVHR with duct coolers result in too many over-heating days (we generally are happy at mid 20s) then we will fit external shading (Brise soleil) which we are ensuring we have suitable fixings for should they be required. An alternative we may use on the ground floor is a sail type shade but need to think a bit more about location of exterior support post(s) for that. Although you can model the expected gains, there are a lot of factors to consider and you may not really know the degree of over-heating until you experience it - hence our contingencies. Personally not a fan of exterior shutters though they would probably be the most effective option. Electrochromatic glass I really like but my wife says no - she has a hang-up that she's seen it in office environments so can't get past it being more of a commercial solution. And that's before we think about cost! Interior blinds of course will also provide a small degree of help, not a huge amount, but maybe in combination with other measures that may make things bearable. Good luck - so many options and so many costs 🙂
  4. Yes - interesting, when I spoke with them they did mention the condensate drain but the spec sheet they sent does not match that 🙂 Will see what ends up in the design. The spec sheet has VentMatika as the brand for the duct heater/cooler. Will update when I know more.
  5. In my proposal on MVHR a duct cooler has been specified - well it is sold as a heater : though presumably will heat or cool depending on the liquid temp you run through it. BPC are working on the design at the moment but hopefully I can run this with a circuit from the ASHP but given the low flow rates this probably means insulating most of the out-flows to avoid temp losses en-route. Don't think I'd want this to be used for heating so would need to build that logic in somehow.
  6. Adam2

    Thinking of PV

    On the website roof/warm flat roofing/single ply/fully adhered/concrete deck with plasterboard ceiling/145/ it looks like size /type of property + number of bedrooms are a big factor as presumably more bedrooms = theoretical higher DHW needs due to more people. My info seemed to reach the cap in payments but maybe the proper EPC will bring that down as the calculator didn't seem to have a way to accurately input insulation
  7. Adam2

    Thinking of PV

    I tried to use the rhi calculator and it looked like I would be in line for a decent return of 4690 spread over 7 years. Maybe the benefit has become more generous for ashp. This was for a 4 bed house concrete walls and flat roof. Some suppliers will work with your own installer so you can get rhi maybe with less costs.
  8. OK - will see how that could work. Just looked at cut to fall insulation - labour on concrete could even it out maybe? I saw xtratherm provide an off the shelf PIR product falling 20mm over 1200. Sounds like could be better than the architect's thoughts on a custom ordered product. Price on that is £91 for 4 sheets 1.2m x 1.2m and I'd need 5 packs so £450 (+ of course the flat insulation to go under) and I'd of course need the insulation anyway. Just did some calcs on floor (am sure architect and engineer will be looking at this) looks like above the concrete plank inside will be 50mm insulation + 75 screed + 25 tiles so 150mm and the other side probably 150 insulation (sloping to 100mm) + legs for tiles (20-55mm) + tiles 20mm = ~157mm. I think 50mm PIR is specified under concrete plank in the ground floor ceiling). Feels that having the planks at the same level will simplify the plank install + ICF build/pour but will follow up with the professionals to see what the thinking is there and the orientation of the planks which may only come out after engaging the supplier to get the design done.
  9. Thanks, sounds reasonable. Architect is working on levels at the moment, as you mentioned lots to factor in, probably using alwitra and their preformed sloping insulation with adjustable legs supporting tiles above
  10. Coping detail from glass to top of rendered ICF. Was wondering if channel could just be pushed into concrete immediately after pour to provide a very secure fixing and would be potentially quicker and with less materials though only found aluminium channel so far. I imagine an issue with setting the channel could also be concrete ingress at joints or ends...
  11. Adam2

    complete newbie

    Welcome Richard - I'm pretty new to this also. Before you know it you'll be sounding like an expert to your friends but still realising how much there is to learn 🙂 As you've no doubt seen, loads of helpful people on here to provide guidance etc as needed.
  12. I'm looking into the design options for some terraces which will have a frameless glass balustrade. Other aspects of the design are hollowcore planks resting on the ICF wall. Simple section view below. The blue is the ground floor ICF wall and grey is the hollow core planks. Red is the extension of the ground floor wall taken up to form the low level wall below glass balustrade poured after the hollowcore is installed. I was thinking how to take advantage of the concrete pour to secure the fixings for the balustrade and considered setting some bolts into the concrete or even setting the channel that the glass will sit in into the concrete. I believe setting aluminium channel in concrete would not be a good option (reaction, hydrogen, general badness) - possibly could use different material - stainless steel possibly for channel. Or just forget the whole idea and drill into the concrete and mount channel above or to the side (after stripping out ICF). Appreciate thoughts/experience from others who may have been through the same process. Thanks
  13. Adam2

    Fall Arrest / Mansafe

    OK so I met with the architect today on a number of subject, including the fall from height bits. It seems these were included in the BR notes as a recommendation and they do not see these as being something the BC body has an interest in. The reason for doing so is professional indemnity related (you could say because they care ) apparently there have been claims against architects due to accidents happening relating to items that were not identified as risks by the architect. If we choose to ignore the recommendation that is our choice. Big relief - was very helpful though going into the discussion being much better informed so thanks again for all the helpful comments and links above.
  14. Adam2

    Fall Arrest / Mansafe

    Great thanks for that bit @JSHarris
  15. Adam2

    Fall Arrest / Mansafe

    Interesting ideas thanks. This is a draft doc from the architect to accompany BR drawings. I liked the portable system I linkes to in the original post. Well, price was ok. There is 1 area if the roof that you could access without ladders (single storey) so if the independent BC company insist on something will try and limit to that area and see if they accept the portable solution. Alternatively or 4 maybe preferably see if they accept some connection rings set through the EPS into the wall though will need to know about cwerification etc. If that fails then maybe block access to that roof area at a height they accept. Currently it is accessible from a terrace by climbing over a std height 1.1m balustrade, could maybe make that 1.8m. Key point I think is to find the applicable rules on this. Thanks again, will update as I progress.