kingspan TF73 as a bathroom floor?

Discussion in 'Builders' Talk' started by nakedterry, Mar 22, 2006.

  1. nakedterry

    nakedterry New Member

    check this out
    http://www.insulation.kingspan.com/newdiv/pdf/tf73.pdf

    I was thinking of using this as replacement floor in my bathroom and tile over it. It is a normal joist and board floor. I want to get rid of the bath and install a stone resin shower tray.

    Problem is, the TF73 stuff is chipboard but Kingspan say this :
    ABSORPTION OF MOISTURE
    Kingspan Thermafloor TF73 zero ODP is not
    sensitive to moisture of any kind. Its surface is
    water–repellent and there is no capillary suction. The
    material is also not hygroscopic. Over a 28 day
    cycle with temperature fluctuating 20/40°C its water
    absorption is <0.5% when tested to BS 3837: Part 2:
    1990 (1996) (Specification for extruded boards).

    1. Will it be strong enough to support the tray and stop movement?
    2. Will it be OK in a bathroom environment?

    Discuss. :)
     
  2. jasonb

    jasonb New Member

    You will have to lay it on a flat surface not joists as it needs full support underneath.

    Will the extra height be a problem

    I still wouldn't be happy tiling onto chipboard.

    If you want a lightweight board with insulation qualities that you can tile straight onto then try Wedi board. http://www.wedi.co.uk/using.htm

    Jason
     
  3. jasonb

    jasonb New Member

    Sorry it will work on joists.

    J
     
  4. diymostthings

    diymostthings Well-Known Member

    Check the fire performance. Some of this stuff is polyurethane foam which can burn well and release toxic fumes. Could be wrong in this case but worth checking.
    PTP
     

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