Welcome to Capital Sash

Specialist supplier of Box Sash Window Solutions for London and the Home Counties.

Suppliers & Installers of traditional Softwood "weight & pulley" type vertically sliding box sash windows as well as modern Hardwood, uPVC, Aluminium, Composite & Internal Secondary alternatives.

Providing solutions for every sash window application from Listed Building & Conservation Area status through modern "lookalikes" to internally fitted secondary glazing specified for thermal &/or noise insulation.

In response to increased Customer demand during recent years for quality timber products, we also supply and install bespoke Hardwood Casement Windows, Doors & Conservatories.


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