The visible mullion between windows in some cases can be as wide as 250mm, which is nothing like the slim mullions on original timber windows. On triple window styles, where the centre sash slides and the two wings are fixed, thick sight-lines are even more obvious, negatively impacting on any authentic detailing.
The bespoke slim mullion measures just 99mm across the front face, which substantially reduces the overall thickness of the sight-lines. Double or triple sash windows no longer look bulky and will complement the period aesthetics of your home. The integral mullion is available as standard on Symphony and Vintage sash windows.
Our MASTER INSTALLERS are a team of specially training craftsmen, chosen to deliver a quality installation of your Masterframe windows.
“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