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Glass & Glazing

Specialist glass and glazing systems engineered for performance — warmer rooms, quieter homes, safer openings and lower bills, year after year.

The Glass

Triple Glazing

Triple glazing takes the performance of a modern sealed unit a significant step further — three panes of glass separated by two argon-filled cavities, with Low-E coatings on the inner surfaces. The result is thermal performance that's hard to match by any other glazing approach, and noise reduction that's noticeable from the first day.

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Triple Glazing
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Why It Matters

Premium Insulation, Premium Quiet

It's the natural choice for new builds, passive-house projects, exposed coastal or hillside properties, and homes near busy roads, railways or flight paths. U-values as low as 0.7–0.8 W/m²K are routinely achievable, well beyond what double glazing can offer — and worth the upgrade when comfort, energy efficiency or noise are top priorities.

  • Three panes with two argon-filled cavities
  • Low-E coatings on multiple surfaces
  • U-values as low as 0.7–0.8 W/m²K
  • Dramatic noise reduction over double glazing
  • Ideal for new builds & exposed properties
  • A++ BFRC rating achievable
Energy efficiency rating
Energy Rating

Excellent U-Values

Triple glazing routinely achieves U-values of 0.7–0.9 W/m²K, significantly outperforming standard double glazing. Combined with thermally broken frames and warm-edge spacers, A++ BFRC ratings are readily achievable.

How To Verify

Look for A++ BFRC ratings and confirm the centre-pane U-value with your installer. Ask whether the unit uses two Low-E coatings (one on each cavity face) for the best performance.

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Tell us a little about your project and our experts will put together a tailored quote — usually within one working day.

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  • FENSA-registered installers
  • 10-year insurance-backed guarantee
  • Over 30 years of expertise
  • Free, no-obligation site survey
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Triple Glazing — common questions

It depends on the property. For new builds, exposed locations, very noisy areas or homes where energy bills are a major concern, the upgrade pays back over time in comfort and lower running costs. For a typical mid-terrace in a quiet area, well-specified double glazing is usually sufficient.
U-values around 0.8 W/m²K (vs 1.2 for good double glazing) reduce heat loss through the glazing by roughly a third. Combined with thermally broken frames, you'll notice warmer rooms in winter — particularly near the windows on cold days.
Yes, especially for higher-frequency noise like traffic or aircraft. The additional pane and second cavity break up sound waves more effectively. For maximum noise reduction, ask about acoustic laminated glass paired with triple glazing.
Significantly — typically 50% heavier per unit. This means we use reinforced hinges and slightly bulkier frame profiles to handle the weight. We assess this at survey to ensure the frames and openings can support the units long-term.
Usually no — existing double-glazed frames are designed for the depth and weight of a double-glazed unit, not a thicker triple-glazed one. For a triple-glazed upgrade, the whole window (frame and unit) typically needs replacing.
Marginally, yes — three panes plus Low-E coatings reduce visible light transmittance by about 10-15% compared to double glazing. Most customers don't notice the difference, but if maximising daylight is a priority, mention it at survey and we'll recommend high-clarity options.

More in Glass & glazing

Double Glazing

Double Glazing

A-rated double glazing fitted in uPVC, aluminium and timber frames — the modern UK standard for warmer rooms and lower bills.

Low-E Glass

Low-E Glass

Low-emissivity glass with a microscopic metal coating that reflects heat back into the room while letting daylight pass through.

Laminated Glass

Laminated Glass

Laminated safety glass — bonded with a tough interlayer that holds the pane together when broken, for security, safety and sound control.

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From residential homes to commercial buildings, we deliver high-quality glazing solutions with expert craftsmanship. Every project is carried out with precision, durability, and meticulous attention to detail.

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