bespoke sash windows
upvc sash window

The Outside

  • Authentic putty lines & glass lines
  • Range of textures and colours available
  • Period astragal bars available in various designs
  • 44mm meeting rail
  • Optional run-through sash horn
  • Deep bottom rail

Silver Range UPVC Windows

Authenticity is the watchword of the SJB Silver. Accepted for use in conservation areas as discerning as the London Borough of Kensington and Chelsea, Lincoln, Worcester, and Cambridge, the SJB Silver looks every inch the iconic timber sash window – while delivering the convenience and all-round excellence of modern uPVC.

All around the UK, more and more people are choosing the SJB Silver when it comes to replacing their existing windows – won over by a generous selection of colour and finishing options, its robust energy and security performance, and, above all, its incomparable vintage charm.

With its sleek sight-lines, deep bottom rail, external putty lines and other period detailing, the SJB Silver is near-indistinguishable from a timber original, offering a level of class and authenticity second only to the Ultimate Rose.

Impeccably Authentic

Accepted in Conservation areas across the UK


Full mechanical joints emulating traditional joinery

  • A-rated energy efficiency
  • Tilting sashes for easy cleaning
  • Secured by Design-enhanced window security (optional)
  • Authentic astragal bar designs and layouts
  • Extensive array of colours & woodgrain finishes
  • Wide choice of window furniture and glazing options
  • Limit stops that restrict how far sashes open, enhancing safety (optional)
  • Market-leading authenticity, with deep bottom rails, putty lines and decorative sash horns
sash window dimensions explained


Colour options

Colour hardware options


SJB Silver Range uPVC Windows are a prestigious market leading sash window that embodies period charm and character in every aspect. Manufactured with traditional detailing found in original period windows, the SJB Silver Range comes highly customisable and in a range of colours to suit your requirements. Decorative features such as authentic astragal bars and run-though sash horns ensure authenticity and make these windows virtually indistinguishable from timber originals.

These high engineered windows are both secure and perform fantastically when looking at acoustic and energy efficient levels. Furthermore the modern technology behind these SJB Silver Range windows mean that they are low maintenance and are easy to operate.

SJB Silver Range windows also boast the slimmest sightlines available. They have flat putty style external glass lines together with subtly moulded internal ones, fully matched on the astragal bars. There are also triple sealed concealed brushpiles, discreet silver or black gaskets and an authentic deep bottom rail.

The SJB Silver Range window also features a bespoke run-through horn which is topped off with a flush fitting cap, the end result of which is the most authentic run-through horn we believe you will find.

Another SJB Silver Range innovation sees both sashes tilt inwards making them easy to clean from within your home. These windows might have been designed with authenticity in mind first, but they have modern benefits without effecting cost.


    Please select size of windows:

    Small Size Windows

    <2000mm Width+Height

    Medium Size Windows

    2000 - 3000mm Width+Height

    Large Size Windows

    >3000mm Width+Height

    • Rehau slim profile
    • Deep bottom rail
    • Flat external putty lines
    • Decorative horns
    • Welded joints
    • Traditional furniture
    • Torsion balances
    • ‘A’ rated thermal efficiency
    • Choice of gasket colours
    • Flush or projecting cill (225mm)
    • Tilting sashes for easy cleaning
    • Maximum width: 1500mm
    • Maximum height: 3000mm
    • Frame depth: 137mm
    • Midrail: 45mm
    • Deep bottom rail: 81mm
    • Cill depths: 149mm and 225mm
    • Glazing: 28mm IGUs
    • Standard finishes: white, white woodgrain, cream woodgrain, golden oak, rosewood
    • WER energy rating: A
    • Run-through horns
    • No horns
    • Polished welds on flat white windows
    • White, white woodgrain, cream woodgrain, golden oak or rosewood foiled finish
    • Painted finish (any RAL colour on smooth or woodgrain)
    • Secured by Design
    • Limit stops to restrict opening
    • Slim-mullion option on combination windows
    • Extreme weather pack
    • Lifetime Homes pack

    Max width/height and energy rating are dependent on finish and glazing configuration.