
Box Sash Windows
Each sash window is made to fit the original opening exactly to provide a timeless finish. For these reasons, our joinery is commissioned by architects, discerning homeowners and those involved with Conservation areas and Listed Buildings.
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Beautiful, Traditional Handmade Sash Windows
Key features of our sash windows
- The latest double glazed sealed units draught/weather seals
- Modified timbers with a 50 year guarantee not to rot or warp
- Advanced micro-porous paint covers with 10 year warranty
- Internally beaded glazing to maximise security and weather seal
All points help to maximise thermal insulation, durability and safety/security.

Testimonial
Timber
Stable timbers that enhance paint coating lifespan is the key to the long life of a window because if the coating remains intact, the window will last indefinitely.
Accoya® | A modified timber and one of the world’s leading, long-life woods with a 50 year warranty against rot and warping. |
Laminated Timber | Vacuum/pressure, Protim water based treated Redwood with a 30year warranty against rot and warping |
Natural Finish | Light oaks, Douglas Fir and Red Grandis with a 30 year warranty |
Glass
Glass & Glazing Types | Glazed to ‘A’ rated specification mainly consisting of 20mm Optiwhite glazing double glazed sealed units (4-12-4). This provides a centre pane U-value of 1.2w/m2k (the lower the number, the better the thermal insulation); The use of OptiwhiteTM glass helps to provide high visual clarity and purity of colour as there is no green tinge associated with some double glazing. This glass also gives more solar heat gain since it allows more heat from the sun, which can save on energy bills during the winter months. |
Other Glazing |
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Draught/Weatherproofing | To enhance the thermal insulation of the window, high specification seals, concealed within the window structure, are positioned so that they can be easily replaced if and when necessary. |
Finishes
Finishes | The latest, most advanced micro-porous treatments and finishes are used to maximise longevity and minimise future maintenance.
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Ironmongery |
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Safety & Security | Security, lockablesash fasteners and 2 (No.) sash stop locks fitted to each window, including child safety/ventilation locks as standard. |
Conservation Areas & Listed Buildings
We are conversant with the requirements for planning and have undertaken many successful Planning applications and where required, successful appeals to The Planning Inspectorate.
Fensa Building Regulation Certificate of Compliance
Where applicable for windows and doors we will arrange certification following installation.
Our Accreditations
