Box Sash Windows

Save on your heating costs and enjoy a warmer, quieter and more secure home by replacing your existing sashes with new box sash windows from the Bygone Collection.  

Crafted from the finest materials and created with precision and performance in mind, these quality sashes will make a stunning addition to any property, new or old. As well as being aesthetically pleasing, our box sash windows are also built to last for years to come, using durable materials and finished to the highest standards, ensuring that you can enjoy your box sash windows for generations. 

Period properties deserve beautifully made and authentically designed windows, which don’t compromise the classic features of your home. The Bygone Collection should be your first choice when looking to maintain the appearance of your property whilst also integrating hard-wearing modern window frames into the building. 

If you think that box sashes could be what your home needs to elevate it to a new level of style, we recommend you contact us today, either by calling our team directly or by submitting your details via our enquiry form.

Our friendly team are ready and waiting to take your call and answer any questions you might have, so get in touch now to get started.

Accreditations >

Learn why you get better windows because of these

  • BBA - British Board of Agrément Certified
  • ISO 9001:2000 Certified Organisation
  • SBD - Secured By Design Approved Windows
  • British Fenestration Ratings Council - A Rating
  • Energy Savings Trust Recommended Windows
  • CE Compliant Windows
  • Member of The Glazing Ombudsman
  • All Bygone windows are manufactured in the UK

Schedule a Design Consultation

Would you like to see a sample, discuss your requirements and options, or obtain an assessment of the costs for your project?

Please click on the button below and enter your details. An approved local installer will happily discuss your request and help assess your project.


If you would like a copy of our brochure please click the download button at the bottom of this page.