Best underfloor insulation

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

Join Australia's most dynamic and respected property investment community
  1. h15

    h15 New Member

    Joined:
    3rd Aug, 2015
    Posts:
    1
    Location:
    Sydney
    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.
     
    h15, 14th May, 2016
    #1
  2. Mathew Tran

    Mathew Tran Member

    Joined:
    20th Nov, 2015
    Posts:
    20
    Location:
    Noble Park North
    Good question I'm also interested to find out :)
     
    Mathew Tran, 23rd May, 2016
    #2
  3. neK

    neK Well-Known Member

    Joined:
    18th Jun, 2015
    Posts:
    2,842
    Location:
    Sydney
    neK, 23rd May, 2016
    #3
    MattADL likes this.
  4. Moych

    Moych Well-Known Member

    Joined:
    3rd Sep, 2015
    Posts:
    68
    Location:
    NSW
    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.
     
    Moych, 23rd May, 2016
    #4
  5. bob shovel

    bob shovel Well-Known Member

    Joined:
    18th Jun, 2015
    Posts:
    6,935
    Location:
    Lower Blue Mountains
    Got a summary please :oops: pictures even better:D

    Putting down carpet works!
     
    bob shovel, 23rd May, 2016
    #5
  6. andrew_t

    andrew_t Well-Known Member

    Joined:
    25th Jun, 2015
    Posts:
    160
    Location:
    Sydney
    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
     
    andrew_t, 28th May, 2016
    #6
  7. Scott No Mates

    Scott No Mates Well-Known Member

    Joined:
    18th Jun, 2015
    Posts:
    27,254
    Location:
    Sydney or NSW or Australia
    R-Max expanded foam (Styrofoam) with foil, fixd between joists.

    Used in alpine areas.
     
    Scott No Mates, 28th May, 2016
    #7