Dan1983 Posted May 27, 2023 Share Posted May 27, 2023 (edited) Evening all, We have Rehau Rio flush casement windows installed on the build with astragal bars. since the build was completed we have had issues with the bars popping away from panes. This has been on our snagging list since august last year but builder is only just addressing it. Rehau not that helpful at the moment. Independent fitter has been out today and said the bars need double sided tape to hold them down but the Rehau system is meant to be tapeless to keep the rubber seal in contact with the pane etc. In my opinion the bars have been cut too long allowing for no expansion gap making them bow in the heat. Some of the internal bars have been recut on-site to make them fit which also makes me think this. Has anyone encountered this type of issue before? i feel I’m being fobbed off by saying they should be taped, possibly need re doing each year is what we were told today! Edited May 27, 2023 by Dan1983 Link to comment Share on other sites More sharing options...
Dan1983 Posted May 27, 2023 Author Share Posted May 27, 2023 (edited) Pictures Edited May 27, 2023 by Dan1983 Link to comment Share on other sites More sharing options...
Dan1983 Posted May 27, 2023 Author Share Posted May 27, 2023 . Link to comment Share on other sites More sharing options...
Dan1983 Posted June 13, 2023 Author Share Posted June 13, 2023 Incase anyone else gets this issue we managed to get a rehau rep out last week. basically inside bars were cut too long and outside ones not installed with correct fasteners! Link to comment Share on other sites More sharing options...
Dave Jones Posted June 13, 2023 Share Posted June 13, 2023 just to derail your thread, the mrs wanted bars on the new windows but they cannot pass new regs with them. ruins the U value apparently.... Link to comment Share on other sites More sharing options...
Dan1983 Posted June 13, 2023 Author Share Posted June 13, 2023 Ah strange! You could just retro fit them after! Link to comment Share on other sites More sharing options...
craig Posted June 13, 2023 Share Posted June 13, 2023 4 hours ago, Dave Jones said: just to derail your thread, the mrs wanted bars on the new windows but they cannot pass new regs with them. ruins the U value apparently.... Then there is a seriously issue with the window being sourced. Link to comment Share on other sites More sharing options...
Dave Jones Posted June 14, 2023 Share Posted June 14, 2023 6 hours ago, craig said: Then there is a seriously issue with the window being sourced. they all the same, internal bars kill the U value. Link to comment Share on other sites More sharing options...
craig Posted June 14, 2023 Share Posted June 14, 2023 They don’t kill the u value, they impact it certainly but they don’t kill it. They actually help with overheating & it depends on whether the bars have a spacer or not between the bars. Link to comment Share on other sites More sharing options...
Dave Jones Posted June 14, 2023 Share Posted June 14, 2023 6 hours ago, craig said: They don’t kill the u value, they impact it certainly but they don’t kill it. They actually help with overheating & it depends on whether the bars have a spacer or not between the bars. 30% drop in performance from 0.8 to 1.2, pretty bad. Link to comment Share on other sites More sharing options...
craig Posted June 14, 2023 Share Posted June 14, 2023 That's why reading information without knowing what it's saying can be confusing and lead to wrong information being supplied. So basically what that is telling you is the following. "If" you have glazing bars you jump from 0.84W/m2K to 1.2W/m2K, what it it is not telling you is this "Uw values may deviate with the additions of astragal/Georgian bars, 1 bar horizontal + 0.1 Uw, several horizontal bars + 0.2Uw. Glass separating astragal bars (spacers behind the astragal, dividing the glass unit) + 0.4 Uw" .That result although correct, it's also incorrect because it is not given you all of the information and you're jumping to the conclusion that if you add Georgian bars/astragals/feature bars or whatever you wish to call them, they kill the u value. They don't. What impacts the u value (overall Uw) - is breaking the glazing unit up from 1 unit, into several units by using spacer bars behind the Georgian bars. It's incorrect to say that it's the Georgian bars that are solely responsible. Link to comment Share on other sites More sharing options...
Dan1983 Posted December 19, 2023 Author Share Posted December 19, 2023 We are still working this issue for info! Rehau kindly got involved and sent a rep round to measure up for all new bars. Unfortunately when they arrived they forgot to subtract the width of the horizontal bar so ended up way too long to fit! As it stands we still need bars cut to length and some glazing removed so the correct fittings can be attached. Original installers long gone and now 18 months in since first reported to builder. Going to have to see if we can find another installer that will carry out the work I think Link to comment Share on other sites More sharing options...
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