This was posted 8 years 1 month 2 days ago, and might be an out-dated deal.

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Earthwool Insulation 🏏75mm x 600mm x 1200mm R1.5 (30.24m2) $10 Per Pack @ Bunnings Warehouse (Coffs Harbour, NSW)

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Earthwool Insulation 🏏75mm x 600mm x 1200mm R1.5 (30.24m2) $10 Per Pack @ Bunnings Warehouse (Coffs Harbour, NSW)
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shortarmsLongpockets on 12/12/2016 - 21:04 bunnings.com.au (453 clicks)
Last edited 13/12/2016 - 05:36 by 1 other user

Needed some insulation for a shed upgrade I'm slowly making my way through and found this bargain. Originally $102 then reduced down to $60 according to this previous post: https://www.ozbargain.com.au/node/254554

Comparatively the 75mm x 430mm are $78 for 20.95m2 or 75mm x 580mm $105 28.26m2

Would've preferred a higher r rating but for $10 a pack its a massive savings, just have to spend the time cutting them down to size which I was going to have to do anyway. They could also probably work as underfloor insulation if you had a way of holding them up.

The Coffs Harbour Store had at least 20 packs yesterday but it could be limited at the other stores, although it looked like they'd just been delivered, they were wrapped up in packs of 6? and there was no signage for them so maybe they're being cleared from a central warehouse?

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  • dreambuds on 12/12/2016 - 21:08

    can you use this for the ceiling?

    • shortarmsLongpockets on 12/12/2016 - 21:11

      in my limited knowledge/research with insulation they are probably a bit thin. Most of the ceiling batts are around the 195mm and are higher r rating. In saying that, something is better than nothing! I have the paper stuff in my ceiling and its crap, one day I want to replace it with good quality batts.

    • troyww on 12/12/2016 - 21:44

      I think the minimum rating for ceiling insulation for new homes is around 4.1 and 2.8 for walls .
      Better than nothing but not by much .

      • edrift on 12/12/2016 - 21:53
        +1

        Could I just buy more and layer them to get a better R rating?

        • kaboomxyu on 12/12/2016 - 21:57
          +3

          Yep. Layer them in opposite directions.

    • w3b3d1g1 on 13/12/2016 - 11:52
      +1

      Yep layer.

  • altomic on 12/12/2016 - 21:15
    +1

    posted 5 days ago

    https://www.ozbargain.com.au/node/280781

    • shortarmsLongpockets on 12/12/2016 - 21:24

      Not this particular batt, the only mention I found is in the expired post of trent86 I included and the last comment by elixe, of the post you linked.

      • altomic on 12/12/2016 - 21:30
        +1

        similar but different- cool bananas .

  • thebargainhunter on 12/12/2016 - 21:46
    +2

    Just a warning, these made my mouth really itchy.

    • iand on 12/12/2016 - 21:51
      +6

      hint:don't eat them :)

    • nightelves on 12/12/2016 - 21:51
      +1

      Pretty sure these aren't meant to be consumed

    • gizmomelb on 12/12/2016 - 23:52
      +1

      are you related to Ozzy?

  • [Deactivated] on 12/12/2016 - 22:09

    I read this as Bunnings Earthworms Insulation…

  • rifter on 12/12/2016 - 22:12
    -1

    From title thought Earthwool was made from wool. Checked and it is just standard glass fibre. No wool at all.

  • Elppa8 on 12/12/2016 - 22:16

    Damn, only just finished upgrading / lining my shed last week with the 75 x 580 bats at $94. This deal would have been handy then.

    • Slippery Fish on 12/12/2016 - 22:25

      Read comment below. The next cheapest option was apparently $75 a pack.

  • Slippery Fish on 12/12/2016 - 22:24

    I called bunnings a week ago, they stated "3 stores across Australia have stock and the supplier refused to supply more."

  • llama on 12/12/2016 - 22:27
    -1

    Would've preferred a higher r rating but for $10 a pack its a massive savings

    These are 75mm R1.5. A layer of 2 is 150mm R3.0 and a layer of 3 is 225mm R4.5.

    This kind of insulation uses AIR as the insulator, so to get higher R you just trap more air (ie: have thicker insulation).

    • shortarmsLongpockets on 12/12/2016 - 22:39

      I'm limited by my studs being only 70mm thick,doubling up the insulation will only push the gyprock off once i line it although i take your point of layering it

      • llama on 13/12/2016 - 01:24

        I'm limited by my studs being only 70mm thick,doubling up the insulation will only push the gyprock off

        It won't push the Gyprock off LOL.

        But if you only have 70mm, then all you can have is R1.5. The R value is based on thickness of AIR trapped.

        Putting R2.0 or R2.5 glass fibre insulation into 70mm will make it worse than R1.5, as the compressed fibreglass will conduct heat not isolate/insulate it.

        • w3b3d1g1 on 13/12/2016 - 09:55

          Insulation can push gyprock off. Seen it a number of times with home renovators thinking more the better. Packing it tight reduces effectiveness.

        • llama on 14/12/2016 - 14:45

          @w3b3d1g1:

          Insulation can push gyprock off. Seen it a number of times with home renovators thinking more the better.

          Yeah, sure you have.

          The tiny amount of "spring" in fibreglass insulation batts wouldn't have sufficient force to move a sheet of plasterboard. Even the 10 batts compressed into a full pack are safely retained with a thin layer of plastic that is easily torn or cut with a knife.

          Plasterboard is screwed and glued to the framing timbers, after which it's quote difficult to remove even with a wrecking bar. If the plasterboard is falling off the wall or ceiling, then logic and common sense will tell you that it isn't the insulation batts that's causing that problem.

    • kev98 on 12/12/2016 - 22:56

      Yes, and don't squash it as it reduces it's insulating rating

    • wfdTamar on 13/12/2016 - 07:00

      I'm not sure double the thickness equals double the R value.

      • llama on 13/12/2016 - 15:06
        +1

        I'm not sure double the thickness equals double the R value

        It's pretty much exactly double. Batts are a form of Bulk Insulation, and the thickness determines the amount of air trapped inside them, thus the higher the R.

        http://www.bradfordinsulation.com.au/home-insulation/walls/g…
        and
        http://www.bradfordinsulation.com.au/home-insulation/ceiling…

        For fibreglass it's about 50mm per R - for example
        R1.5 = 75mm thick
        R3.5 = 185mm thick

        However - you can get much better performance with multiple layers in ceilings.

        Ceiling timbers are typically 70mm or 90mm high. If you lay R3.5 batts (185mm tall) or R.0 batts (210mm tall) between the timbers, you end up with a considerable area (above all the timber) where there is no insulation at all. What happens is that the heat gets conducted through the timber, plus there is heat escape gaps along the sides of all the timber unless the insulation is very tight and well installed.

        So the best way is to lay thinner batts the same height as the timers in between them (ie: R1.5 for 70mm or R2.0 for 90mm). Then lay another FULL layer at 90 degrees across the whole ceiling. So, if you used 2 layers of R1.5 in this way, you would get considerably better insulation than a single layer of R3.0.

        In my home I have 90mm tall timbers, and I got a good deal on R2.5 because it was considered "not good enough" for most ceilings. So I ran one layer between the timbers then another layer of R2.5 across the top of the whole thing. There is 200mm tall plywood stapled vertically all around the perimeter, and because it sags a bit under it's own weight it ended up pretty much a solid block of fibreglass batts about 220mm to 250mm thick.

    • llama on 13/12/2016 - 14:32
      +1

      LOL at the people NEGGING my comments above.

      Ozbargain is a truly unique place, eh?

      I have stated facts, and have said exactly the same as others in this thread.

  • outlander on 12/12/2016 - 22:58
    +3

    Floor insulation - chicken wire and staple gun

    • llama on 13/12/2016 - 01:24

      I think foam would be better LOL

      • outlander on 13/12/2016 - 14:22

        I think your a llama that knows what he's talking about.

        A wealthy llama too, from the sounds of it. Do I sound like I can afford foam here? I'm working with chickenwire and staple guns here man! I ain't made of money!!

        • llama on 13/12/2016 - 14:31

          Nope, not a wealth llama at all. After many months of collecting cast-off appliance packaging materials from the side of the road, I also decided that foam was far too hard to find and too expensive to purchase.

          I decided on a simpler method than your chicken wire, which is too stiff, expensive and cumbersome. So I used fabric bird netting which comes on a roll and is very easily managed whilst lying on your back in the dirt.

          However I only used that netting to hold it in place temporarily. I was not happy about having exposed fibreglass hanging below the house ready for small beasties to jump up and make a home in.

          So, across the bottom of the floor joists I added normal sliver (blue face) sarking. I used the stuff designed for walls, so there are tiny holes in it which are designed to let it breathe.

        • outlander on 13/12/2016 - 17:20

          @llama:

          Ha, I had that idea too. Decided against it when I tried removing the side of a fridge and found how hard it was.

          So how much did your way end up costing you?

        • llama on 14/12/2016 - 14:30
          +1

          @outlander:

          Ha, I had that idea too. Decided against it when I tried removing the side of a fridge and found how hard it was.

          I was using the polystyrene PACKAGING supplied with large appliances. I wasn't tearing them apart to get the insulation out of them LOL.

          So how much did your way end up costing you?

          I have no idea, it was done over a period of many years. It cost me the Batts, about $10 for the bird netting and I guess about $50 per roll of wall sarking, each of which covers a pretty massive area.

          After it was completed, it looked like this: http://www.rmindustries.com.au/images/110807-008.jpg (not my photo)

  • Steptoe on 13/12/2016 - 05:55

    None of the Illawarra Stores are showing any stock as of yesterday.

  • w3b3d1g1 on 13/12/2016 - 11:51
    +1

    Just bought 10 bags and got them delivered. 10 bags with delivery 120…. Wowzas…. Almost felt bad. It was $105 per bag. Thats a 95% discount… Is this the deal of the year????!!!!!

    • w3b3d1g1 on 13/12/2016 - 13:11

      Armidale Store

  • dan086 on 13/12/2016 - 12:16
    +2

    just bought 10 bags from Castle Hill. There is some at other nsw stores apparently. the guy who put them through was amazed at how cheap they were. Thanks OP!

  • outlander on 14/12/2016 - 17:03

    definitely nothing in vic

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