Browse Forums Owner Builder Forum Re: Reasonable Insulation Requirements KDRB 5Jan 17, 2019 4:30 pm Even if you only need R4. It makes sense to go R6 as the cost isn't much more. Note R2.7 is much more expensive than R2.5 in the walls. You don't have to go thermally broken windows to get U Values of 2.90. As mentioned, ECOECO offers good value windows. Their Awning windows with Low-E glass has a U value of 2.8. Also add decent wall wrap and sarking, that may reduce your insulation and window requirement however as an owner builder why not use the money you save upfront to upgrade your insulation/windows. You'll save money in the long run and also be more comfortable. Your best bet might be to go visit the display homes and walk around in them, and take photos. Get a feel for it in person instead of deciding from the floor plan. There… 1 21454 Keen to hear from people in the area who have got KDRB done on whom they got the build from? Looking for recommendations. Thanks 0 21118 Seems good to me. I've been told $4-5k/sqm is reasonable in Perth. 2 11189 |