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About tonyshouse

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    Regular Member

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  • About Me
    Loves reducing energy use, saving energy, hates waste in all its forms.
  • Location
    Thames Valley

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  1. Also it is kW not KW or killa wot ours
  2. We use steel reinforcing to act as anti cracking, my soft sand works perfect, it is very soft and yellow, Thames Valley, the bottom board of the shutter can sit 15mm onto the brickwork sides tucked in too, silicone to stop the slip oozing out. Sand mix can be fairly thick as can any concrete you use we use angled ends to help form the fall and squared up the horn bit that sits under the reveal brick.
  3. I have done the several times, need to mitigate thermal bridging, concrete is a bit naff so we buttered the shuttering box with a clever mix of yellow pit sand and white cement , add a few bits of reinforcement then careful concrete, finally top off with the sand mix ensuring no concrete shows when set almost indistinguishable from real Bath stone. easier on the floor for upstairs, quoins etc -
  4. I don’t like the service void as I worry about thermal bypass and cold getting in there. I would fix ceiling plasterboard before building stud walls
  5. Very likely a steel box lintel off the shelf would do the job, cheaper and they have tables for them
  6. Heat pumps are most efficient at lower delta T’s lower difference between source and delivery temperature. So to get to 50C efficiency is not so good. most likely an immersion will be incorporated to raise temperature the last bit. I want one but can’t find one small or cheap enough.
  7. The butt ends aren’t tapered - so may as well use square edge as problem is the same then
  8. 15mm on ceiling never use 9.5 walls should not have plasterboard on them - use masonry and wet plaster
  9. Sheet insulation covered with Glassrock board, mechanically fixed through the insulation with wafer screws
  10. Someone local, there are several oak framing companies near me,
  11. Oak is special, it is very strong in tension - the supplier should help with calcs
  12. In the medium and long term hydrogen will become a very important part of the fuel mix. It will not and should not be put in pipelines. it can be used in fuel cells to power bike, motorbike, car, van lorry, bus, train aeroplane; shed, house, school, village, town, city. And will be. when we can convert sunlight straight to hydrogen we will have our energy problems cracked
  13. But then wind/air can still get in under the floor and come out somewhere else, opposite skirting, under bath, behind door linings, downstairs through ceiling lights etc etc