sash windows

Sash Windows Traditional

Quintessential English in style, sliding sash windows remain one of the most beautiful and efficient windows of all time. And modern sash windows provide warmth and security whilst retaining the character, charm and beauty of your home.

We are passionate about creating traditional sash windows that are perfect for you, your home and your neighbourhood. Replacement windows that set out to replicate the detail found on original sliding box sash windows, making them, "indistinguishable from wooden originals, even at close quarters".

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"These windows appear to replicate traditional sliding sash windows very closely. The effect is so convincing that it is very difficult to differentiate between the two, even at close quarters"

Elegance, style and traditional values

Our traditional sash windows faithfully reproduce classic features like staff beads, slender proportions with slim meeting rails, combined with unique, traditional vertical "butt joint" manufacturing techniques. Exclusive deep glazing bar and beads, with Krypton gas units, means our Heritage Range is 'A' rated and 'secured by design'.

Our Traditional Range is without question our premier sliding sash window, for when "only the very best" will do. As you might expect, this range has virtually every optional extra to truly transform and compliment your home, whether it be a traditional Victorian property or contemporary new build home.


Three Counties Ltd are proud to be trusted fitters of sliding sash windows from the Bygone collection, elegant and pioneering designs to compliment the charm of your building regardless of its age. Bygone's sash windows are engineered and manufactured in the UK; The design allows for effective and efficient circulation, reducing the risk of problems like mould and condensation in your house. They are police preferred for their secure design and offer impressive energy ratings.

Three Counties Ltd can quote and fit the full Bygone range of sash windows including:

  • Symphony collection
  • Harmony Collection
  • Melody Collection
  • Traditional Wood
  • Spring Balanced Timber Windows

Elegant, Energy Efficient and Highly Durable

Do remember, windows have a significant affect on the look of your property and your home will lose vastly more value than any short term savings, if you get them wrong. You've probably invested a substantial sum buying your property, so any improvements must enhance it, make you feel warm, secure and be long-lasting.

We are experienced installers of sash windows and the installation methods required. We will happily discuss your personal requirements, explain how shutters, architraves and curtains will be protected and answer any questions you have. We will either bring sample windows to your home or invite you to our showroom before you make any decisions. We will provide you with a written proposal for the project, so that you have a full and clear understanding of the work before it is carried out.

timber alternative sash windows

sash window installation accreditations

Features and Benefits

  • Strong, durable, elegant and timeless
  • Authentic wood grained, textured finish
  • Traditional, vertical and sealed 'butt jointed' 
  • Energy saving, thermally efficient windows
  • Slimline 16mm sealed units filled with Krypton gas
  • Chamfered external bars
  • Fully steel reinforced sashes
  • Porcelain ball designed security locks 
  • Fully 'Secured by Design' compliant
  • Each product is tailor-made to order
  • Free Comprehensive 10 Year Guarantee
  • Finance packages available

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 and we will happily discuss your request and help assess your project.

Replacement sash windows