Sash Windows in Barnet

Barnet's Timber Window Specialists

Barnet sits at the gateway between London and Hertfordshire, with its historic High Street and surrounding Victorian and Edwardian neighbourhoods representing the best of North London suburban living. From the period properties of High Barnet to the leafy streets of Totteridge, these homes deserve windows that reflect their architectural heritage. At Prime Sash Windows, we manufacture bespoke timber sash windows that honour Barnet's heritage while delivering modern thermal and acoustic performance.

The Barnet borough includes several Conservation Areas protecting its historic character, including Monken Hadley, High Barnet, and Totteridge. Our team has extensive experience working with Barnet Council's planning requirements, ensuring windows meet heritage standards while providing modern thermal and security performance.

Why Barnet 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 Barnet 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 Barnet

We serve all areas of Barnet including High Barnet, East Barnet, New Barnet, Totteridge, Whetstone, Finchley, Friern Barnet, and Hadley Wood. Our workshop location allows prompt service throughout the EN4, EN5, N11, N12, N20 and surrounding postcodes.