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Double Glazing

Made-to-measure sealed unitsFrom 1.1 W/m²K

Browse our full range of double glazed sealed units — from standard clear glass to acoustic, toughened and energy-rated options. Every unit is made to measure in our Bristol factory, typically ready in 5–7 working days.

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55 products

Standard Double-Glazed Unit
Standard Double-Glazed Unit
From £200.00
24–28mm | Domestic & light commercial
Safety & Security Double-Glazed Unit – Made to Measure
Safety & Security Double-Glazed Unit – Made to Measure
From £200.00
1wk 0
Low-E Argon IGU
Low-E Argon IGU
From £200.00
34wk
Double Glazed Unit – 1000 × 800 mm
Double Glazed Unit – 1000 × 800 mm
From £200.00
4wk 0
Single Cut Shape | Lead Time 4 weeks
Double glazed sealed unit IGU showing two glass panes, spacer bar and insulating cavity
Slim Profile Double Glazed Unit - 14mm – 4mm Clear / Warm-Edge / 63% Thermal
£0.00
4wk
Double glazed sealed unit IGU showing two glass panes, spacer bar and insulating cavity
Slim Profile Double Glazed Unit - 14mm – 4mm Clear / Aluminium / 56% Thermal
£0.00
5wk
Slim Profile Double Glazed Unit - 14mm – 4mm Softcoat / Aluminium / 57% Thermal
Slim Profile Double Glazed Unit - 14mm – 4mm Softcoat / Aluminium / 57% Thermal
£0.00
2wk
Self-Cleaning Glazed Unit - Low Maintenance – 6mm Planitherm 1.0 / Warm-Edge / Argon / 65% Thermal
Self-Cleaning Glazed Unit - Low Maintenance – 6mm Planitherm 1.0 / Warm-Edge / Argon / 65% Thermal
£0.00
2wk
Self-Cleaning Glazed Unit - Low Maintenance – 6mm Softcoat / Aluminium / Argon / 70% Thermal
Self-Cleaning Glazed Unit - Low Maintenance – 6mm Softcoat / Aluminium / Argon / 70% Thermal
£0.00
2wk
Self-Cleaning Glazed Unit - Low Maintenance – 6mm Softcoat / Warm-Edge / Argon / 83% Thermal / Ground
Self-Cleaning Glazed Unit - Low Maintenance – 6mm Softcoat / Warm-Edge / Argon / 83% Thermal / Ground
£0.00
2wk
Self-Cleaning Glazed Unit - Low Maintenance – 6mm Planitherm 1.0 / Warm-Edge / Argon / 66% Thermal
Self-Cleaning Glazed Unit - Low Maintenance – 6mm Planitherm 1.0 / Warm-Edge / Argon / 66% Thermal
£0.00
2wk
Made to Measure Double Glazed Unit - Custom Size – 6mm Softcoat / Aluminium / 66% Thermal / Seamed
Made to Measure Double Glazed Unit - Custom Size – 6mm Softcoat / Aluminium / 66% Thermal / Seamed
£0.00
3wk
Made to Measure Double Glazed Unit - Custom Size – 4mm Clear / Aluminium / Argon / 63% Thermal / Seamed
Made to Measure Double Glazed Unit - Custom Size – 4mm Clear / Aluminium / Argon / 63% Thermal / Seamed
£0.00
4wk
Made to Measure Double Glazed Unit - Custom Size – 4mm Clear / Aluminium / Argon / 63% Thermal / Ground
Made to Measure Double Glazed Unit - Custom Size – 4mm Clear / Aluminium / Argon / 63% Thermal / Ground
£0.00
3wk
Made to Measure Double Glazed Unit - Custom Size – 4mm Clear / Warm-Edge / 69% Thermal
Made to Measure Double Glazed Unit - Custom Size – 4mm Clear / Warm-Edge / 69% Thermal
£0.00
5wk
Low-E Coated Glazed Unit - Energy Efficient – 4mm Softcoat / Warm-Edge / Argon / 84% Thermal
Low-E Coated Glazed Unit - Energy Efficient – 4mm Softcoat / Warm-Edge / Argon / 84% Thermal
£0.00
5wk 0

About Double Glazing

Double glazed units consist of two panes of glass separated by a spacer bar, creating an insulating air gap. Our sealed units use 4mm float glass as standard, with configurations from 14mm to 28mm overall thickness. Each unit incorporates Low-E coating to reflect heat back into your home.

Filled with argon gas and fitted with warm edge spacers, our double glazed units achieve U-values as low as 1.2 W/m²K. All units comply with BS EN 1279 standards for long-term durability and thermal performance. The energy efficient design reduces heat loss by up to 50% compared to single glazing.

Every double glazed unit is made to measure at our UK facility, ensuring perfect fit for your frames. We offer comprehensive guarantees on thermal performance and provide fast delivery nationwide for both replacement and new installation projects.

Frequently Asked Questions

  • What U-value can I expect from your double glazed units?
    Our standard double glazed units achieve U-values between 1.2-1.6 W/m²K depending on configuration, with Low-E coating and argon gas fill as standard.
  • What glass thicknesses are available in your double glazed units?
    We supply 4mm, 6mm, and 8mm glass options with various spacer bar widths, creating overall unit thicknesses from 14mm to 28mm.
  • How do warm edge spacers improve thermal performance?
    Warm edge spacers reduce heat transfer at the glass edge, minimising condensation risk and improving overall U-value performance by up to 0.1 W/m²K.
  • What information do I need to provide for made to measure units?
    We require exact width and height measurements in millimetres, glass thickness preferences, and any specific performance requirements for your application.

Need Help Choosing the Right Glass?

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