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Cavity Wall Insulation

Hi all, we have recently purchased a bungulow which was built in the 90's. We are finding the property cold so we got our loft insulated. When the inspector looked at our cavities he discovered a thin layer of Celotex, and he said this means that they could not do the cavity wall insultation because the Celotex needs to breath.

Our problem is that we are finding the property is still very cold (even after the loft insulation) and we are finding ourselves putting the heating on this July. Is there anything we can do to improve our cavity insulation?

Comments

  • Leif
    Leif Posts: 3,727 Forumite
    flopstocks wrote: »
    Our problem is that we are finding the property is still very cold (even after the loft insulation) and we are finding ourselves putting the heating on this July.

    I suspect you are not alone in having to put the heating on in July of all months. My heating is on low, and I am wearing a jumper. (Not just a jumper, you know what I mean.) I also wonder if you are more susceptible to cold than some. I hate warm houses, and prefer it to be about 18C.
    Warning: This forum may contain nuts.
  • Older building regs allowed 25mm cavity insulation board to be used, I believe that if the cavity was filled with polystyrene balls would give you the extra while allowing the insulation to breathe.
  • MX5huggy
    MX5huggy Posts: 7,173 Forumite
    Part of the Furniture 1,000 Posts Name Dropper
    Celotex is not breathable. Only the gaps between the boards are breathable if they were not taped ( which is unlikely).

    Basically there is no BBA certificate for using 2 diffrent types of insulation in the same cavity.

    Personally I would get the cavity pumped with Graphite EPS bead, without a warranty provided (because you won't get one).
  • flopstocks
    flopstocks Posts: 165 Forumite
    Part of the Furniture 100 Posts Name Dropper Combo Breaker
    edited 13 July 2012 at 10:52PM
    MX5huggy wrote: »
    Celotex is not breathable. Only the gaps between the boards are breathable if they were not taped ( which is unlikely).

    Basically there is no BBA certificate for using 2 diffrent types of insulation in the same cavity.

    Personally I would get the cavity pumped with Graphite EPS bead, without a warranty provided (because you won't get one).

    Thank you! My mums bungulow down the road is a lot warmer than ours and they have had cavity insulation. So how do I go about getting them filled with Graphite EPS or poly balls? I assume I can't get it through a free scheme like my loft insulation?
  • MX5huggy
    MX5huggy Posts: 7,173 Forumite
    Part of the Furniture 1,000 Posts Name Dropper
    Maybe try the manufactures for example http://www.springvale.com/products/ecobead/index
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