Browse Forums Heating, Cooling & Insulation Re: Cost of perfect insulation??! 43Apr 23, 2009 9:56 pm Using glasswool insulation is not the best GREEN option polyester batts are minimum 80% recycled and they are not degenerative. To answer your question at R2.5 the law of diminishing states most of the work is done. To go from R5.0 to a R4.0 to save $3,000 I dont think you will see the savings in your or your granchildrens lifetime. We used a smaller qld builder who went bankrupt about 12 months after completion of ours. It was a shame as they were good and relatively cheap and I would have used… 3 4708 Hey guys building a new place through a volume builder and just wondering if i should complain to the site supervisor as we just had plasterboard installed. Looks like… 0 11273 1000000% definitely add insulation. I have in my home and it makes a big difference minimising sound transfer. Insulation is pretty cheap and definitely worth it 2 6202 |