SBMS Posted Friday at 18:56 Share Posted Friday at 18:56 Would be interested in why many favour timber alu clad over pure aluminium? Thermal efficiency for us is on a par (0.75 u value eg for aluminium windows). For me the internals of aluminium are preferable to more chunky timber. But would be really interested to know if I am missing something? Link to comment Share on other sites More sharing options...
Russell griffiths Posted Friday at 20:01 Share Posted Friday at 20:01 Do your research would need to be a very special frame in aluminium to get those kind of u values. I believe there’s a fair bit of fibbing going around. Link to comment Share on other sites More sharing options...
SBMS Posted Friday at 20:20 Author Share Posted Friday at 20:20 (edited) 25 minutes ago, Russell griffiths said: Do your research would need to be a very special frame in aluminium to get those kind of u values. I believe there’s a fair bit of fibbing going around. Have done. Largest privately owned fenestration company in UK turning over 53 million so would hope their claims and testing were robust. What do you think: https://www.seniorarchitectural.co.uk/wp-content/uploads/2023/01/PURe®-Casement-Window-System-Technical-Datasheet-28.10.2024.pdf Edited Friday at 20:28 by SBMS 1 Link to comment Share on other sites More sharing options...
JohnMo Posted Friday at 20:31 Share Posted Friday at 20:31 9 minutes ago, SBMS said: What do you think: https://www.seniorarchitectural.co.uk/wp-content/uploads/2023/01/PURe®-Casement-Window-System-Technical-Datasheet-28.10.2024.pdf Interesting it doesn't state UG or UW. SO pretty meaningless as far as performance. Link to comment Share on other sites More sharing options...
SBMS Posted Friday at 20:34 Author Share Posted Friday at 20:34 2 minutes ago, JohnMo said: Interesting it doesn't state UG or UW. SO pretty meaningless as far as performance. It’s the Uw. Had the values back from local fabricator. Link to comment Share on other sites More sharing options...
JohnMo Posted Friday at 21:28 Share Posted Friday at 21:28 2 hours ago, SBMS said: Would be interested in why many favour timber alu clad over pure aluminium? Mainly because all wooden framed windows are good thermally, the aluminium adds weather resistance. Many aluminium windows historically (lots still are) had absolutely rubbish thermal properties. Newer one's can be good. But they certainly are not pure aluminium. The aluminium forms weather resistant coating over plastic instead of wood. So pretty much the same just sold differently. Link to comment Share on other sites More sharing options...
SBMS Posted Friday at 21:30 Author Share Posted Friday at 21:30 Just now, JohnMo said: Mainly because all wooden framed windows are good thermally, the aluminium adds weather resistance. Many aluminium windows historically (lots still are) had absolutely rubbish thermal properties. Newer one's can be good. But they certainly are not pure aluminium. The aluminium forms weather resistant coating over plastic instead of wood. So pretty much the same just sold differently. Ah okay thanks @JohnMo I was asking because my wife didn’t want timber internally (chunky) and we’ve had quotes from norrsken, rationel etc that are all more than the pure aluminium system. It seems like a bit of a no brainier for me but wasn’t sure if I was missing something Link to comment Share on other sites More sharing options...
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