Sash Windows in Islington

Islington's Timber Window Specialists

Islington is home to some of London's finest Georgian and Victorian architecture. From the elegant townhouses of Barnsbury to the tree-lined streets of Canonbury, these properties deserve windows that match their historical significance. At Prime Sash Windows, we manufacture bespoke timber sash windows that honour Islington's heritage while delivering modern thermal and acoustic performance.

Many Islington properties fall within Conservation Areas, including the Barnsbury, Canonbury, and Duncan Terrace/Colebrooke Row Conservation Areas. Our team understands the strict planning requirements and designs windows that meet both heritage standards and modern building regulations.

Why Islington Homeowners Choose Us

Every window is manufactured in our workshop near London from engineered Accoya or premium hardwood. Accoya is guaranteed for 50 years against rot and fungal decay — far outlasting uPVC, which typically degrades within 20 to 25 years.

• Slimline double glazing — 4/16/4 sealed units with warm-edge spacer bars. U-value 1.4 W/m²K. Part L compliant.
• PAS24 security — multi-point espagnolette locking on all opening sashes.
• Traditional lead weights — we never use spring balances. Smoother operation, longer lifespan.
• Any colour — over 2,000 RAL colours and the full Farrow & Ball range. Dual colour available.
• FENSA registered — Building Regulations self-certification and certificate on completion.

Every window is spray-finished with premium Sikkens coatings — a multi-coat system including primer, undercoat, and topcoat for a flawless, lasting finish.

What We Offer

• Box sash windows — traditional double-hung sash windows with cords and lead weights.
• Casement windows — flush casement and stormproof designs.
• Slim Georgian bars — authentic planted or run-through glazing bars.
• Arched and shaped windows — gothic, segmental, and true-arch heads.
• Doors — French doors, bifold doors, sliding doors in matching timber.

How It Works

• 1. Design online — Use our 3D configurator to design and price your windows instantly.
• 2. Free survey — We visit your Islington property, measure precisely, and confirm the specification.
• 3. Manufacture — Your windows are built in our workshop. Typical lead time 6–8 weeks.
• 4. Installation — Our FENSA-certified fitting team installs your windows with minimal disruption.

Areas We Cover in Islington

We serve all areas of Islington including Angel, Barnsbury, Canonbury, Highbury, Holloway, Archway, Finsbury Park, and Clerkenwell. Our workshop location allows prompt service throughout the N1, N5, N7, N19, EC1 and surrounding postcodes.