Keystone Supplies, Unit 17 Storforth Lane Trading Estate, Hasland, Chesterfield, Derbyshire, United Kingdom S41 0QQ
01246 201523
Evolution Windows
Combine the timeless charm of traditional timber with the security, low maintenance, and energy efficiency of modern technology. Evolution timber effect windows are handcrafted to replicate authentic period joinery while providing exceptional thermal performance for your home.
Storm Windows
Handcrafted Timber Alternative Stormproof Windows
The Evolution Storm collection redefines the classic British stormproof window, pairing timeless period aesthetics with modern materials science. Engineered with authentic handcrafted mechanical butt joints, slender sightlines, and deep traditional timber style cills, the Storm range mirrors the intricate joinery of historical timber casements. Its distinctive lipped sash design offers an authentic heritage profile that seamlessly enhances period cottages, country homes, and traditional suburban residences.
Behind its classic wood appearance lies advanced multi chambered composite profile engineering that completely eliminates rotting, warping, and the need for frequent repainting. Fitted with high performance double weather seals and multi point 'shootbolt' locking mechanisms, Evolution Storm windows deliver exceptional draught exclusion, high security, and market leading thermal efficiency to keep your home warm and secure all year round.
External Finish
Handcrafted timber alternative with realistic woodgrain foil or smooth architectural finish
High performance 28mm double glazing or acoustic laminated specialist glass
Optional Extras
Traditional wrought iron handles, working peg stays, dummy butt hinges, authentic Georgian astragal bars, deep heritage cills
Opening Styles
Side hung casement, top hung casement, fixed pane, multi section bay and bow configurations
Colours
Curated heritage colour palette, complete range of Classic RAL colours, and dual colour combinations
Security
High security multi point shootbolt locking, PAS 24 certified, Secured by Design accredited
Thermal & Acoustic
A+ energy rating with U values down to 1.3 W/m²K and acoustic noise dampening up to 42dB
Tab Content
This is a basic text element.
Flush Windows
Authentic Period Style Flush Sash Windows
The Evolution Flush collection faithfully replicates the timeless elegance of traditional 19th century British flush fitting timber joinery. Designed to sit completely level within the outer frame without protruding lipped sashes, this range delivers refined, understated sightlines that complement character properties, period restorations, and sensitive conservation areas. Every window is meticulously hand finished with authentic mechanical butt joints and traditional timber cill proportions to preserve the architectural integrity of your property.
Behind its authentic wood appearance is an advanced multi chambered composite structure that provides exceptional structural rigidity, thermal insulation, and weather protection without the endless sanding, painting, and rot of real timber. Fitted with robust multi point locking systems, internal security beading, and high performance draught seals, the Evolution Flush collection provides peace of mind, acoustic calm, and effortless warmth for modern everyday living.
External Finish
Handcrafted timber alternative with realistic woodgrain foil or smooth architectural finish
High performance 28mm double glazing or acoustic laminated specialist glass
Optional Extras
Traditional monkey tail or teardrop handles, working peg stays, dummy butt hinges, authentic Georgian astragal bars, deep heritage cills
Opening Styles
Side hung casement, top hung casement, fixed pane, floating mullion French casement, bay and bow configurations
Colours
Curated heritage colour palette, complete range of Classic RAL colours, and dual colour combinations
Security
High security multi point shootbolt locking, PAS 24 certified, Secured by Design accredited
Thermal & Acoustic
A+ energy rating with U values down to 1.3 W/m²K and acoustic noise dampening up to 42dB
Tab Content
This is a basic text element.
Handcrafted Timber Alternative Stormproof Windows
Evolution's Storm Collection
Traditional Mechanical Joints
Secured By Design & PAS 24
A+ Energy Rating
Advanced Timber Alternative
The Evolution Storm range redefines the traditional stormproof window. Featuring intricate timber look mechanical joints, deep cills, and authentic woodgrain finishes, these windows deliver a timeless period aesthetic alongside A rated energy performance and advanced multi point security.
Authentic Period Style & Flush Sash Aesthetics
The Flush Collection
Traditional Mechanical Joints
Secured By Design & PAS 24
A+ Energy Rating
Advanced Timber Alternative
Designed to sit completely flush within the outer frame, the Evolution Flush collection mirrors classic 19th century timber window designs. Perfect for heritage properties and conservation areas, each window features handcrafted joint details, slender sightlines, and outstanding insulation without the need for repainting.
Stay Stylish With Matching Doors
Looking For Evolution Doors?
See Evolution's English Door range to perfectly complement your windows.
