​​Double Glazed Units London – Replacement & Bespoke Sealed Units
Looking to replace misted or broken glass? At Barnsbury Joinery, we provide made-to-measure double glazed units across London and Hertfordshire. From sash windows and casements to doors and conservatories, our bespoke units improve insulation, reduce energy bills, and preserve the look of your property.
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Why Choose Our Double Glazed Units?
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10-year manufacturer’s guarantee
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Bespoke sizes to match original frames
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Slimline options for conservation areas
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Low U-values for energy efficiency
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Fast turnaround & installation support
Our Double & Triple Glazing Options:
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Thicknesses: 12mm upwards, including slimline
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Gas fills: Air, Argon, Krypton
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Glass types: Low-E coated, acoustic, patterned, tinted, toughened
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Spacer bar colours: Silver, Black, White, Gold
How to Order Replacement Glass Units:
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Measure your existing window (guides available)
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Send us the dimensions for a same-day quote
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Choose your glass and spacer options
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Delivery or professional installation arranged
Areas We Serve Across London & Hertfordshire
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We regularly supply and fit in:
Islington • Hackney • Camden • Clerkenwell • Highbury • Hampstead • Barnet • Enfield
Frequently Asked Questions
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Q: How long do your double glazed units last?
Our sealed units typically last 20+ years when properly installed and maintained.
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Q: Can you supply slimline glazing for listed buildings or conservation areas?
Yes, we offer heritage slimline double glazing designed to maintain traditional aesthetics while improving insulation.
Q: Do you provide installation or supply only?
We can supply only for trade customers or supply & fit for homeowners in London and Hertfordshire.
Q: How quickly can I get a replacement unit?
Most orders are completed within 7–10 working days, with emergency replacements available.
Get a Free Quote Today
Looking for a reliable glazing specialist in London? Contact Barnsbury Joinery today for a fast, no-obligation quote.
📞 Call: 02071646305
📧 Email: info@barnsburyjoinery.com
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