My two Velux GHL 606 windows glass are cracked due to intense heat. I need to get replacement glass but information about the actual glass size (thickness and spacer) is contradictory and Velux advise 'replace the whole unit' . Some advice is 'all pre 2001 windows are 16mm' , other is 'glass is 24mm' , and ' 4 14 6 ' . Replacing the units looks straightforward enough, and possibly can be done in situ without removing the window. I know from experience how heavy these windows are.. It's difficult to measure the actual unit but it doesn't look like 24mm
Glass sizes for Velux windows
- Thread starter cgkstevenson
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To measure the DG unit thickness follow the guide in the last post in this thread: https://www.diynot.com/diy/threads/when-is-it-best-to-replace-windows.607099/#post-5426108
It will be 16mm at that age! velux do sell a replacement but only in 24mm now, so you would need a conversion kit also.
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You'll get a 16mm unit from any reputable double glazing manufacturer. And glass size for a 606 should be 988 x 994. ( visible glass size ,.. 962 x 930 )..obviously check you are happy with the size as I'm not being held responsible if it's wrong lol.... make sure you get at least toughened glass as a replacement , wouldn't want standard 4mm window glass above my head personally, never understood how velux got away with that one.
Last time we tried to purchase a conversion kit they weren't available...
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Yes I heard they were Phasing them out as stocks ran out.
I thought it must have been heat which caused them to crack but other window facing the same way is ok. It seems it 'could' have been my 3 year old grand children playing with things...
Anyway, the answer to glass thickness is 24mm, which Velux finally confirmed, after initially saying it was 16 mm !
Anyway, the answer to glass thickness is 24mm, which Velux finally confirmed, after initially saying it was 16 mm !
Have you given velux the code for the window? If so have they come back and said its manufactured with 24mm glass ?
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