Introducing Harmony sash windows crafted with exclusive Timberweld® construction

Harmony Sash Windows are designed to meet the highest standards of craftsmanship and aesthetics.

These windows share the same frame and sash profiles as our premier Symphony product, complete with the beautiful wood-grained, textured acrylic foil on all profiles. Harmony also boasts distinctive features like a deep bottom rail, continuous run-through horns, and exclusive Timberweld® construction.

With "A-rated" 24mm sealed units, filled with Argon gas, Harmony allows for the inclusion of internal Georgian bars and glazing beads, while externally chamfered bars provide the timeless appearance of traditional putty glazing.

For added security, Harmony features fully steel-reinforced sashes, complemented by the exclusive Acorn or Beehive-designed stainless steel Bygone clawed cam catches.

This comprehensive security design ensures that Harmony is fully "secured by design" compliant, making it the preferred choice for sash windows endorsed by the police.
Introducing Harmony sash windows crafted with exclusive Timberweld® construction
Sash window styles and notable features

Sash window styles and notable features

To provide you with a better understanding of the diverse window designs available, we've compiled a selection of popular options.

The layout of Georgian bars significantly influences the window's appearance, making it essential to choose designs that harmonise with your existing or historical windows.

This guide will help you envision how your new sash windows will enhance your living space.

Conventional glazing bar and bead

While our windows all come standard with steel reinforcement, secured by design certification, and an "A rating," Harmony features our conventional 24mm sealed units (4:16:4mm) filled with Argon gas.

With this configuration, your windows won't have the deep bar, but they still create an interlocking grille firmly affixed to the glass surface.

The bar ends are securely clamped in place using our patented stainless steel Georgi clips.

Externally chamfered sashes and bars maintain the traditional appearance of "putty-glazed" windows, adding timeless charm to your home.
Conventional Glazing Bar and Bead
Exquisite and true-to-era Victorian details

Exquisite and true-to-era Victorian details

During the Victorian era, horns gained popularity, and much like the deep bottom rails of that time, they were crafted using vertical "mortice and tenoned" joints—a tradition that lives on in Bygone Harmony sash windows.

Enhanced by a textured, wood-grained acrylic foil, your new sash windows promise a flawless and authentic appearance that often leaves people astounded by the remarkably realistic grain texture, often mistaken for wood.

While the standard offering includes white foil, you can opt for a cream-coloured foil.

If you're seeking something more distinctive, consider the striking contrast of black frames with white sashes or explore a range of colours from renowned options like "Farrow and Ball" or "RAL" to find the perfect paint to suit your style.

Locks and discreet limit stops designed to match your choice
of finish

Each Bygone Harmony sash window comes equipped with either a single or a pair of robust stainless steel cam catches and face-fixed keeps.

What sets us apart is our patented innovation—a pair of left and right-hand cams designed to centralise larger sashes within the frame, enhancing security. Even our single cams are secured with three screws to ensure they remain firmly in place and can't be forced apart.

Furthermore, every keep is affixed using four screws: two for precise vertical alignment and two anchoring horizontally into steel reinforcement. Additionally, each keep features a special nylon insert to safeguard the plated surface of the stainless steel claw.

Unlike clunky, surface-mounted devices that can be challenging to operate, all Bygone sash windows incorporate a pair of recessed limit stops.

These stops offer a silky-smooth operation and remain unobtrusive, staying flush with the surface of the sash until they are engaged during opening.