New thoughts on wall insulation

In the middle of January 09 as our thoughts turned to renovating the next bedroom we had a minor revelation!

The original thinking of removing the plaster and lath walls to insulate and then replace with plasterboard was time consuming, expensive and a job that I certainly did not enjoy. It was time to revisit the whole insulation idea!

As we had removed the first bedroom’s walls we knew that there were no noggins in the walls and weatherboards are relatively easy to ¬†remove so we looked at what type of pump in insulation were available in Tasmania. A visit to the Home Ideas Centre in Launceston (Now Building Selection Centre, 262 York Street, Launceston(2016)) and a chat to the very friendly management gave us the brochure for ESNI (Environmentally Safe Natural Insulation) a Queensland based company with a Tasmanian agent based in Launceston. They manufacture a cellulose fibre insulation which is made from recycled newspaper with borax and boric acid added to make it vermin and fire resistant.

Ken Bauer came to have a look and gave us a very reasonable quote for pumping it into the walls and topping up the ceiling. I will remove and replace the weatherboards.

This way means that we will have all the walls insulated before winter sets in and it was poor time management to remove the perfectly good plaster and lath walls never mind the environmental impact as plasterboard manufacture is quite energy intensive as well as the fuel needed for the transport of the plasterboard and getting rid ofthe plaster and lath.

6 thoughts on “New thoughts on wall insulation

    • Sorry I meant to put in this web link From my research cellulose fibre and batts both take in a certain amount of moisture if the conditions are humid or damp, and they both readily dry out as the air dries out. As far as I know there are Australian standards that insulation products have to be manufactured to and that includes moisture content. For some general information on insulation try this

      Every house has different needs in insulation. Our house only has studs (uprights) and no noggins (horizontal timbers that go between studs) so it is relatively easy to pump insulation in. This may not suit every house. We started out by removing the internal plaster in one room to insulate with wool batts but it proved to take too much time and the plaster and lath was in good condition so it was a little silly to remove it and replace it with plasterboard. This way appears to be a way we can insulate the walls without too much fuss. It may work out that ceilings and under the floor is an easier place to start. We cannot get access to under our floor.

  1. Do you have any concerns about the cellulose fibre becoming damp due to moisture moving through your weatherboards? Can you give a rough indication of the price quoted?

    • Hi Linda
      Welcome to Greentasreno
      I’ve got no concerns about moisture. The product has been used for a long time in ceilings and walls withno effects that I can determine. If you check out ESNI website it has plent of information regarding moisture etc

      I was quoted approx $2000 for our three bedroom house. This is for the walls and a top up in the ceiling as we already have some batts in the ceiling. If you have no insulation in the roof then you maybe eligible for a government grant.

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