We had our old conservatory replaced with a Rutland conservatory complete with bi-fold doors and the warm roof system,they are not the cheapest but we like to support local business,the sales rep surveyor and installation team were brilliant, when measuring for new blinds we noticed small straight scratched on one door and window glass we contacted Rutland who sent a surveyor to inspect he agreed that the glass was scratched, we were surprised to receive an invoice to replace the units at nearly £300 when I phoned Rutland informed me that as the units had been fitted for more than a two weeks they would have to charge he also said that glass scratches very easily, we have had double glazed units since 1978 and have never scratched any of the glass. Will not be ordering glass splashbacks for our new kitchen if KLG glass scratches before it has even been cleaned once.