Core Sash Windows

Core Sash Windows offer a professional, yet relaxed and friendly window or door replacement service. All our surveyors and sales representatives have years of experience in the double glazing industry and many of them have worked as fitters of double glazed sash windows and doors in the past so have real, hands-on experience with the product. They’ve designed our sash windows from scratch and gone on to successfully market those same sash windows throughout all the boroughs of London. We have over a 10 year history in the window industry and in this time have installed casements, doors and sash windows throughout London and provided a first class fitting service, including in conservation areas and listed buildings. We choose not to work with UPVC sash windows and focus fully on our timber sash windows range in order to ensure that our workforce and our surveyors are totally in tune with our product, service and our ethos.We believe that our traditional timber windows and doors retain the traditional style and quality that many UPVC sash windows and doors in the double glazing industry just can’t match. We’re so confident in the long lasting strength of our product that we’re willing to supply a 10 year guarantee to ensure that you have peace of mind.