Browse Forums Windows & Doors Re: window energy values in contracts - when can builder ext 4Jul 29, 2011 11:47 am Peter Clarkson - AusDesign Australia www.ausdesign.com.au This information is intended to provide general information only. It does not purport to be a comprehensive advice. Re: window energy values in contracts - when can builder ext 6Jul 29, 2011 4:11 pm Thanks Ed . . . very enlightening. To follow on could you explain (in laymans tems) the correct application configurations for Low-E in double glazing. i.e I assume in 'cooling climates' the Low-E is on the inner pane. Is this always the case & is this how it works ? Peter Clarkson - AusDesign Australia www.ausdesign.com.au This information is intended to provide general information only. It does not purport to be a comprehensive advice. Re: window energy values in contracts - when can builder ext 7Jul 29, 2011 5:21 pm The surface position on which the low-E glass will be placed is dependent on the climate. Ideally for warm climates where summer heat reduction is a priority, the coating should be on surface 2 for maximum performance (Note: the surface number is counted from the external surface of the outer pane [1], right through to the external surface of the inner pane [4]). The coating on surface 2 minimises heat gain because it reduces heat build up in the air gap and heat transfer to the interior. Using surface 3, low-E is most effective for warm climate glazing. But it works both ways, in both positions, just more effective in the positions mentioned. So really it should have two u-values, one for each location. Ed "ECOECO" At 'EcoEco', we design windows, we design the best windows, we do it for you, so that when you’re happy we are happy. Tel. 1800 326 326 Re: window energy values in contracts - when can builder ext 8Jul 30, 2011 10:25 pm I disagree with you Ed, though I was seeking thoughts from others in the forum. What if my specification was for 1 outdoor tap and the builder installed 16. Would I be expected to pay for 15 extra taps which is a 'favour' from the builder? No. I don't see why it would be any different with windows. Again if the builder put in higher insulation than required to meet the energy requirements why would this be a cost to the buyer? I don't think energy efficiency reports are a license to upgrade and up spec everything... Re: window energy values in contracts - when can builder ext 9Jul 30, 2011 10:53 pm newhomestarted I disagree with you Ed, though I was seeking thoughts from others in the forum. What if my specification was for 1 outdoor tap and the builder installed 16. Would I be expected to pay for 15 extra taps which is a 'favour' from the builder? No. I don't see why it would be any different with windows. Again if the builder put in higher insulation than required to meet the energy requirements why would this be a cost to the buyer? I don't think energy efficiency reports are a license to upgrade and up spec everything... What I am saying is that the offer is not simply a choice of what is cheapest against what is more costly (and who knows which way the price will be between low-E and double glazing for any given supplier), it's a choice of which alternative gives the best quality and performance. You pay your builder to be the expert,he knows what he will stand by in the warranty, he knows what performs. Now if you just want the cheapest outcome irrelevant of performance, then tell him. But he may not agree as he has to guarantee the product. If he gives you 16 taps when you wanted 1, then refuse to pay for 15... if he gives you 20 windows when the plans said 15, then refuse to pay for 5. If he advises you to use a better tap, because it will last a lifetime, or it will not drip, then listen... If he advises you to use a particular window, also listen... (especially if it is EcoClassic ) Ed "ECOECO" At 'EcoEco', we design windows, we design the best windows, we do it for you, so that when you’re happy we are happy. Tel. 1800 326 326 MBA and HIA both have sub contract agreements, check them out 2 7450 Industry type domestic contracts are prepared by industry bodies for the benefit of the builders. This means that if you are the owner watch out. One of the points is… 0 3313 Hello, I am currently working on a study in regards to building contracts in Australia. I would like to interview people with their building experience in Australia and… 0 660 |