Oct 05, 2011 9:23 am
My weatherboard home has no insulation in the roof and I'm wondering what the simplest (and cheapest) options are for DIY insulation.
I have been looking at R3.5 Insulation Batts Earthwool (175X430 PK 21) from Bunnings at $61 per pack.
Not sure if there are better and/or cheaper products around?
Happy for any advice.
Re: Roof insulation options - advice?2
Oct 05, 2011 9:45 am
Batts are the easiest self install. Price ? Do what you are doing and look for the specials. Stratco here in SA often have good specials, other than that keep an eye out on your letterbox flyers for specials.
Re: Roof insulation options - advice?3
Oct 05, 2011 10:09 am
Check Ebay. There is a place in every city that sells them wholesale at about $20-$25 per bag and it's the same stuff as the big green shed or another supplier. You usually have to pick them up yourself, thats all. As long as it has the Australian Approval compliance on it then it's fine. There are also different varieties out there. The glasswool itches like crazy so cover up and use dust masks and gloves but some out there are made of polyester with no itching at all.
Build thread: viewtopic.php?f=31&t=34120
Handover 23 Dec 11
Squatting 21 Dec 11
Fixed 12 Oct 11
Plastered 31 Aug 2011
Framed 7 June 2011
Site Start 7 Feb 2011
Land Titled 18 Jan 2010
Land Deposit 25 Jun 2009
Re: Roof insulation options - advice?4
Oct 06, 2011 1:05 pm
R3.5 would be a 'minimum'. R4.0 is more of an industry standard. What location are you in ?
Peter Clarkson - AusDesign Australia
This information is intended to provide general information only.
It does not purport to be a comprehensive advice.
Re: Roof insulation options - advice?5
Oct 06, 2011 6:56 pm
I'm in central victoria. Have only just started looking around and noticed the Bunnings Earthwool batts and wondered whether they would be 'nicer' to handle instead of the fibreglass ones. Don't know anyone in our region who sells them wholesale and no luck on eBay.
Re: Roof insulation options - advice?6
Oct 14, 2011 11:28 am
"R4 batts" gives about 10 results for me at ebay.com.au, and "batts" gives even more. In Campbellfield there are warehouses selling unbranded bags of glasswool R3.5 batts for $10 each. Another place sells R4 for $32 per bag, also in Campbellfield.
Metricon Riva 33 - http://herlihy-riva.blogspot.com
Site start 15/03/2010 - Handover 23/12/2010
9 months and 8 days (284 calendar days) from site start to handover
Re: Roof insulation options - advice?7
Nov 02, 2011 12:16 am
I would go with the Earthwool batts from Bunnings. They do have them on special, sometimes for $35/bag. They are glasswool batts, but are the least itchy ones available (know from our installers experience).
Avoid the cheap batts mentioned from other posts - they are imported chinese batts leftover from the govt rebate which people are trying to offload cheaply due to excessive stock. They likely do not meet Australian Standards, and our installers have said that they are EXTREMELY itchy and generally a bad product to handle.
Hope this helps
Re: Roof insulation options - advice?8
Nov 02, 2011 9:45 am
Those batts are going for under 25 bucks a bag at bunnings at the moment. Earthwool is just a fluffy name for what is still glasswool, but its still a better product than the cheaper ebay ones. However ebay is still better to get the name brands from like the bradfords etc, some places are a rip off.
Re: Roof insulation options - advice?9
Nov 04, 2011 3:18 am
Glass wool is fiberglass = bad
Rockwool is spun basalt. Its rock dust from quarry that is heated and spun like lava fairy floss. Low flammability, it still collects dust which is, but its higher density and mineral content make it a perfect sound insulation as well. It uses less energy than polyester to make, its heated once.
Polyester is doona material, spun poly plastic.
Recycled polyester is plastic bottles that have also been treated to the fairy floss method. Basically, water bottles from office workers.
Glasswool is incredibly itchy and horrid to work with.
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