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Best underfloor insulation

Discussion in 'Renovation & Home Improvement' started by h15, 14th May, 2016.

  1. h15

    h15 New Member

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    Our property has floorboards over joists (very old baltic pine). We decided to rip our carpet and now bare floorboards which is starting to get air coming through. We are looking at putting in underfloor insulation. A bit confused about what is the best to get. Are the batts better than the foil based? and what about the moisture. Majority of the house is quite elevated - from about 1.2m-0.6m.
     
  2. Mathew Tran

    Mathew Tran Member

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    Good question I'm also interested to find out :)
     
  3. neK

    neK Well-Known Member

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    MattADL likes this.
  4. Moych

    Moych Well-Known Member

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    I've just started looking into this too (very early stage at the moment).

    I did hear that you can get sprayed underfloor insulation that is only marginally more expansive than the foil/batts option. Avoids the vermin problem but there does need to be sufficient access beneath the flooring. I think it was about 0.5m clearance required to get the sprays in there and apply the coating correctly.
     
  5. bob shovel

    bob shovel Well-Known Member

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    Got a summary please :oops: pictures even better:D

    Putting down carpet works!
     
  6. andrew_t

    andrew_t Well-Known Member

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    Hey all, I have installed expol under my floor and has worked quite well Existing Homes

    Mr floors are timber and am on brick peers, so access was easier than most



    They could be bought from bunnings but unsure if they still sell them. The come in different sizes and you can cut them down to match your joist spacing's. My house is from the 60's so each joist spacing was very different and not always evenly the same however being made of foam material i could easily cut it to suit

    Andrew
     
  7. Scott No Mates

    Scott No Mates Well-Known Member

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    R-Max expanded foam (Styrofoam) with foil, fixd between joists.

    Used in alpine areas.