Barnsbury Joinery — Sash Window Repair & Heritage Joinery in Islington

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For over 20 years, Barnsbury Joinery has been trusted by homeowners, architects, and conservation bodies across Islington to repair, restore, and manufacture traditional sash and casement windows. We combine heritage craftsmanship with advanced glazing solutions like slimline double glazing and vacuum glazing, ensuring your period property stays warm, quiet, and true to its original design. All our products come with a 10-year guarantee.

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👉 Call us today for a free survey in Islington or request your quote online.

 

Why Choose Barnsbury Joinery in Islington?

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• 20+ years’ experience repairing and restoring sash windows in Islington’s historic homes.

• Trusted by the Crown Estate, US Government, and numerous Islington listed building owners.

• Specialists in conservation areas including Barnsbury, Canonbury, and Clerkenwell.

• 10-year guarantee on all workmanship and joinery.

• In-house workshop with highly skilled joiners.

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Our Sash Window & Joinery Services in Islington:

 

Sash Window Restoration & Refurbishment

Sensitive restoration that preserves the historic character of Islington’s Georgian and Victorian homes.

 

Draught-Proofing & Weather Sealing

Eliminate draughts and noise without compromising heritage detail.

 

Timber Sill & Frame Repair

Expert replacement of decayed timber, matched perfectly to your original windows.

 

Sash Cord & Pulley Replacement

Smooth operation restored with traditional materials.

 

Bespoke Sash & Casement Replacements

Crafted in our Barnsbury workshop, tailored for Islington conservation requirements.

 

Painting & Finishing

Traditional finishes to protect and enhance timber.

 

Slimline Double Glazing Retrofits

Discreet double glazing designed for Islington’s period homes. Please see additional information on slimline glazing.

 

Vacuum Glazing for Listed Buildings

Ultra-thin, high-performance glazing approved for many Islington listed properties.

 

Our Process:

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• Free site survey in Islington

• Advice on planning & conservation area requirements

• Workshop joinery & professional installation

• 10-year guarantee & aftercare

 

Recent Islington Projects:

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• Georgian townhouse in Barnsbury – slimline double glazing retrofit.

• Victorian terrace in Canonbury – full sash restoration.

• Clerkenwell property – vacuum glazing upgrade in a listed building.

 

Testimonials:

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“Barnsbury Joinery restored our Islington townhouse sash windows beautifully. The vacuum glazing is almost invisible but makes a huge difference to comfort.” — Client, Barnsbury

 

“Professional, punctual, and true experts in Islington conservation joinery.” — Client, Canonbury

 

Areas We Serve in Islington:

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• Barnsbury

• Canonbury

• Clerkenwell

• Angel

• Holloway

• Highbury

 

Frequently Asked Questions:

 

Do I need planning permission for sash window repairs in Islington?
Not usually — like-for-like repairs are fine, but for double glazing or listed properties we advise on all permissions.

 

Can slimline or vacuum glazing be used in conservation areas?
Yes — both solutions are designed for Islington’s historic buildings and are often conservation-approved.

 

How long do sash window repairs take?
Most Islington homes are completed in 1–3 days depending on window condition.

 

Do you guarantee your work?
Yes — every repair and product is covered by our 10-year guarantee.

 

Contact Us:

📍 Barnsbury Joinery — Serving Islington
📞 02071646305
📧 info@barnsburyjoinery.com

👉 [Request Your Free Islington Quote Today]