Redwood Joinery Box Sash Windows have been developed to reflect the traditional single glazed sash window.

Modern modifications blended subtlety with a classic design produce an elegant yet high performance wooden Box Sash Window.

Our standard box sash comprises of draught and weather proofing in 6 areas: Internal staff bead, parting bead, external facing, meeting rails, top and bottom rails. These have a dual effect of excellent draught and weather proofing plus ease of sash operation.

We are able to offer our standard box sash window or replicate your existing box sash windows. The dimensions of the sashes, glazing bars, staff bead, horn details and even the box itself (moulded or un-moulded facings) can be tailored to suit your needs. We supply and fit a contemporary range of window furniture which has been specifically chosen for its high quality, reliability and appearance. The more popular finishes are Brass, Polished Chrome and Brush Satin Chrome.

All our fitches and arm fasteners are locking with many styles and finishes available. All our windows are factory glazed and balanced with lead accordingly then set up in full working condition before delivery.

We offer double glazing with a solid glazing bar 34mm wide or a slim/narrow applied bar option is also available. The applied bar varies in width from 22mm down to 16mm. Slimlite glass can also be incorporated into our box sash windows enabling us to produce sashes with a solid bar as thin as 16mm.

Box Sashes can be made from Softwood, Sapele, Iroko, Oak and Accoya.

Our boxes operate with Lead Weights as standard. We also offer a cost effective Spiral Balanced or Spring Balance option. The balanced option is also appropriate when no reveal is present in the existing brickwork, but a Box Sash window is required.