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Ian last won the day on July 2

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About Ian

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    Regular Member

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  • About Me
    Chartered Architect
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    North of England

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  1. @Onoff there’s no automatic protection of trees unless you live in a conservation area. Also you’ve got to be careful if your house is listed. The LA keep a list of TPO protected trees but it’s obviously not a good idea to make an enquiry giving your exact address.
  2. Ian


    It's the extreme alkalinity of concrete (ph of 12 to 13) that prevents the embedded steel from corroding.
  3. Ian

    Air test

    @nod Mine was 3.7 without using any special tapes or airtightness membrane however my build was timber frame and timber clad. Did you wet plaster or dry line your inner block wall?
  4. Ian


    @Redoctober @Jude1234 @Christine Walker @CC45 Hi, The broker I used is called Mayfair Performance Insurance, 11 Lurke Street, Bedford. Tel 01234 242900 (no connection with them other than as a customer) My reason that i went through a broker is that my self-build is a holiday home which is timber frame and timber clad so a little unusual but the insurance is not too bad - £200 a year for the building & usual 3rd party liability (but no contents cover) I've been using them for a couple of years now and started a few months before I got my building regs completion (but after the highest risk work had been completed). Loss as a result of construction work prior to full completion was an exclusion on the policy. Ian
  5. Ian


    @nod PM sent with the brokers details.
  6. Ian


    I managed to get normal building insurance well before I had a building regs completion certificate. Let me know if you want me to PM you the details of the broker I used. The only exclusion was loss as a result of construction work.
  7. Ian

    The End Of The Bungalow

    @PeterStarck That's really interesting Peter! Out of interest - have you got any theories as to why the timber sole plate rotted so badly?
  8. My Biopure 1 is serving a holiday home and I was advised by the manufacturer to run the blower 2 hours on/2 hours off. its been running about 18 months now without any issues. With the 50% reduction in time the running costs are only about £20 per year as the JDK-S-60 pump is already a low power one (27 watts I think)
  9. Ian

    Fire escape windows

    @Russell griffiths extract from AD B of the building Regs for England re escape windows: “Note 1: Approved Document K Protection from falling, collision and impact specifies a minimum guarding height of 800mm, except in the case of a window in a roof where the bottom of the opening may be 600mm above the floor.”
  10. Ian

    Wall thickness

    I built a 71sq.m holiday home where I had similar issues to some of yours in that I wanted to keep the wall thickness down. I ended up with a 260mm thick wall with a U value of 0.21 I compensated by having better insulation in the roof (0.13), floor (0.1)and windows (0.8 3G) wall build up from inside to outside was skimmed plasterboard on battens to form a service cavity - 25mm foil faced Cellotex insulation 140mm timber frame filled with mineral wool insulation OSB with external cedar horizontal weather boarding on battens.
  11. Ian

    New series of Grand Designs

    thats exactly what I thought. I'm guessing 300mm of larch would be a wall U value of about 0.4 which is nowhere near enough for building regs compliance
  12. Ian

    Ideal stair angle

    @Adamantium AD K of the building regs in England requires the following: Tread width (going) should be between 220mm and 300mm Step height (riser) should be between 150mm and 220mm Max allowable pitch is 42 degrees When measuring tread widths, overhangs don’t count: Page 4 is the relevant bit you need: https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/443181/BR_PDF_AD_K_2013.pdf
  13. Ian

    Drying of screed

    Just to re-state the point I made earlier: you can easily get a false positive reading from a Tramex meter, especially as they are calibrated for concrete and not calcium sulphate. It's worth getting a hygrometer or calcium carbide test done to double-check that the Tramex readings are correct. Using the Tramex the floor might be bone dry and your meter is telling you it's wet.
  14. Ian

    Drying of screed

    @Jude1234 What method are you using to test the relative humidity levels in the screed? Edit - the reason for asking is that some of the commonly used test methods can be unreliable, particularly when the screed is calcium sulphate. If your builder has been testing using a Tramex CME meter (see photo) they can sometimes give false high readings. It would be worth checking using a different method. It doesnt sound like you have the time to get a hygrometer test done as they take 72 hours but you could get a calcium carbide test done quickly if you can find someone to do it for you.
  15. Ian

    Drying of screed

    @Jude1234 In order to get your screed dry you need a differential between the relative humidity of the screed and the relative humidity of the air in the house. For example, if the air in the room is warm with high humidity because all the windows are shut while the UFH is on then the screed is not going to dry out. Have you tried running dehumidifiers at the same time as the UFH?