The exclusive deep GRP cill is available as standard on the Symphony sash window and the Vintage sash window and is a beautiful feature designed to achieve the authentic appearance of an original 3” timber, useful for use in a Conservation Area.
The deep 55 mm cill is indistinguishable from the other PVC-U sections because all are bond wrapped in the same Renolit foil to maintain the appearance of timber.
The deep cill is 16.8 times stronger that a regular cill and this strength allows larger and more unusual windows to be replicated more authentically, for instance where required in sea front hotels, renovated / converted former schools, industrial buildings and ecclesiastical buildings.
Download your choice of Bygone Sash Window brochure or get in touch to have one sent in the post.
“The communication and customer service has been excellent”. - Mrs B – Guildford
"These windows are a premium range but secure, A rated and have a very authentic grained appearance.” - GP – Essex
"The conservation officer had to be told that these sash windows weren't timber!" "They're a perfect match for the old ones and for our period property, but are more secure, retain the heat of the room and look great inside and out.” - Mr D W – Stoke
"We wanted someone we could trust. Having the double guarantee and back up of bygone themselves was the final reassurance we needed but we shouldn't have worried. Will get them back again next year when we can afford some more” - Mr C K - Derbyshire
"WE DESPERATELY WANTED TO RETAIN THE INTERNAL SHUTTERS" - MRS S.B - OXFORD
"The windows are lovely, the service and installation were excellent, and we’re now going to have the rest of them done” - Mrs C. J – Brentwood