Keystones
Feature keystones that combine with either window head range, positioned centrally over the opening.
About This Profile Family
Two keystone profiles, each designed to combine with either the WH001A/B or WH002A/B window head range — specify the combination at time of ordering. KS001 is 265mm wide x 215mm high; KS002 is 265mm wide x 225mm high, both narrowing towards the base for a traditional keystone taper.
Available Styles
Lead Time
On request
Supply
Supply or Install
Base Coat
VPI Polymer-Modified
Manufactured
CNC-Cut, Aberdare
Supplied ready-coated with an approved VPI polymer-modified basecoat, designed for integration with approved external render and façade systems — smooth, textured/stone-effect and acrylic finishes — confirmed at technical-submittal stage to match your project's render system.
Optional Specialist Finishes: Emperor Paint is confirmed compatible with our specified VPI coating system and is available as an alternative decorative finish. See our FAQ for details, or contact us to discuss guarantee terms and pricing for your project.
Related Profile Families
Window Heads
Rendered substrate or facing brickwork window head profiles, engineered to your window opening width. Combine with a keystone for a feature detail.
Window Cills
Stooled and surface mounted window cill profiles for rendered substrate or facing brickwork applications, engineered to your window opening width.
Quoin Stones
Corner detailing for classical and Georgian facade composition, in three profile types each with two size variants.