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  Reply # 845288 25-Jun-2013 21:34
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Anodized ones look horrible if you get the brown ones, and the dyes fade to an even worse yellowy orange colour.

Powdercoat starts to flake off after not very long on the white ones a friend had put in.

uPVC ones like I got have a steel frame inside them, which will rust and leave rusty water lines running from all the gaps in the PVC at the bottom.




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  Reply # 845393 26-Jun-2013 08:59
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Aluminium not a great idea, it's only advantage over pvc is color. Pvc is the standard in the UK where insulation is taken seriously, even in tenements they have it, and retrofitted into 500 year old buildings. Thermal Frame, great product and service. Cheaper than broken alu too. Alu companies all had awful service when I talked to three of them.

On tablet, sorry for language.




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  Reply # 845432 26-Jun-2013 09:56
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timmmay: Aluminium not a great idea, it's only advantage over pvc is color. Pvc is the standard in the UK where insulation is taken seriously, even in tenements they have it, and retrofitted into 500 year old buildings. Thermal Frame, great product and service. Cheaper than broken alu too. Alu companies all had awful service when I talked to three of them.

On tablet, sorry for language.


I think, to be fair, there are two other main issues with uPVC (which we generally just call PVC).

One is longevity. I note the British Plastics Federation gives an expected life-span of 35 years for uPVC windows. PVC does break down over time especially with exposure to sunlight despite additives to slow the process. Once it becomes brittle it might not be a problem until it gets knocked and then it cracks etc. Perhaps a more realistic span is 50 years but it still seems a throw away approach to me.

The other area is toxicity. PVC is a very difficult substance to recycle or dispose of effectively and can be very toxic in the environment.

Any product has it's pros and cons but we need to be aware of them.

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  Reply # 845741 26-Jun-2013 20:10
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Fair call. The ones up the mountain on their website are 20 years old and still look great apparently.




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  Reply # 845757 26-Jun-2013 20:44
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I spent too much time reading trivial facts on PVC today and am happy to conceed it is NZs 4th most recycled plastic!

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  Reply # 845759 26-Jun-2013 20:50
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I think its mainly downcycled in nz




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