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Triple Glazed Windows

Complete window unitsTriple glazed performance

Upgrading your windows to triple glazing dramatically reduces heat loss, outside noise and condensation. Our triple glazed window units are made to measure and designed to fit your existing frames wherever possible — saving thousands compared to full window replacement.

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146 products

Self-Cleaning Glazed Unit - Low Maintenance (Specialist Application)
Self-Cleaning Glazed Unit - Low Maintenance (Specialist Application)
From £200.00
4wk
Self-Cleaning Glazed Unit - Low Maintenance (Roof / Overhead Glazing)
Self-Cleaning Glazed Unit - Low Maintenance (Roof / Overhead Glazing)
From £200.00
6wk
Self-Cleaning Glazed Unit - Low Maintenance (Residential Replacement)
Self-Cleaning Glazed Unit - Low Maintenance (Residential Replacement)
From £200.00
4wk
Self-Cleaning Glazed Unit - Low Maintenance (Conservation Area)
Self-Cleaning Glazed Unit - Low Maintenance (Conservation Area)
From £200.00
6wk
Self-Cleaning Glazed Unit - Low Maintenance (Commercial / Shopfront)
Self-Cleaning Glazed Unit - Low Maintenance (Commercial / Shopfront)
From £200.00
3wk
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 – 4mm Softcoat / Aluminium / Argon / 83% Thermal
Self-Cleaning Glazed Unit - Low Maintenance – 4mm Softcoat / Aluminium / Argon / 83% Thermal
£0.00
5wk
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 (Specialist Application)
Made to Measure Double Glazed Unit - Custom Size (Specialist Application)
From £200.00
3wk
Made to Measure Double Glazed Unit - Custom Size (Roof / Overhead Glazing)
Made to Measure Double Glazed Unit - Custom Size (Roof / Overhead Glazing)
From £200.00
3wk
Made to Measure Double Glazed Unit - Custom Size (Residential Replacement)
Made to Measure Double Glazed Unit - Custom Size (Residential Replacement)
From £200.00
4wk
Made to Measure Double Glazed Unit - Custom Size (New Build / Extension)
Made to Measure Double Glazed Unit - Custom Size (New Build / Extension)
From £200.00
3wk
Made to Measure Double Glazed Unit - Custom Size (High-Rise / Exposed Site)
Made to Measure Double Glazed Unit - Custom Size (High-Rise / Exposed Site)
From £200.00
5wk
Made to Measure Double Glazed Unit - Custom Size (Conservation Area)
Made to Measure Double Glazed Unit - Custom Size (Conservation Area)
From £200.00
3wk

About Triple Glazed Windows

Triple glazed windows feature three panes of glass separated by two sealed cavities, typically configured as 4-16-4-16-4mm. Each sealed unit incorporates advanced glazing technologies including Low-E coatings and inert gas fills to maximise thermal performance whilst maintaining optical clarity.

These units achieve exceptional U-values from 0.6-1.0 W/m²K when filled with argon gas or premium krypton gas. Manufactured with warm edge spacer bars to BS EN 1279 standards, they significantly reduce heat loss and condensation whilst improving acoustic performance by up to 42dB.

Pane Relief supplies made to measure triple glazed units with precision cutting to your exact requirements. All units carry comprehensive warranties and benefit from nationwide UK delivery with expert technical support throughout the ordering process.

Frequently Asked Questions

  • What U-value can I expect from triple glazed windows?
    Triple glazed units typically achieve U-values between 0.6-1.0 W/m²K depending on glass specification, spacer type and gas fill. Premium configurations with krypton gas can reach 0.6 W/m²K.
  • What's the standard thickness for triple glazed sealed units?
    Standard triple glazed units range from 28mm to 44mm overall thickness. Common configurations include 4-12-4-12-4mm (28mm) and 4-16-4-16-4mm (36mm) with argon gas fill and Low-E coating.
  • Are triple glazed windows worth the extra cost over double glazing?
    Triple glazing offers 30-50% better thermal performance than standard double glazing, plus superior noise reduction. Most beneficial in exposed locations or when replacing single glazing.
  • Can you manufacture triple glazed units for existing window frames?
    Yes, we supply made to measure replacement sealed units for existing triple glazed frames. Simply provide accurate measurements and we'll manufacture units to match your frame specifications.

Need Help Choosing the Right Glass?

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