Secondary Glazing vs Triple Glazing
Comprehensive comparison of secondary glazing and triple glazing: costs, thermal performance, noise reduction, and installation requirements. Expert analysis to help you choose the right solution.
Quick Comparison Overview
Key differences between secondary glazing and triple glazing at a glance.
| Factor | Secondary Glazing | Triple Glazing |
|---|---|---|
| Cost per m² | £200-400 | £500-1200 |
| Installation Time | Same day | 3-5 days |
| Heritage Properties | Perfect solution | Usually prohibited |
| Noise Reduction | Up to 80% (50dB) | Up to 75% (45dB) |
| U-Value | 1.8-2.2 W/m²K | 0.8-1.2 W/m²K |
| Disruption | Minimal | Significant |
Detailed Performance Analysis
In-depth comparison across key performance metrics.
Cost Analysis
Secondary Glazing
- • £200-400 per m² installed
- • No structural changes
- • Immediate installation
- • 3-5 year payback
Triple Glazing
- • £500-1200 per m² installed
- • Complete window replacement
- • Extended project timeline
- • 10-15 year payback
Thermal Performance
Secondary Glazing
- • U-Value: 1.8-2.2 W/m²K
- • 60% heat loss reduction
- • Large air gap advantage
- • Excellent condensation control
Triple Glazing
- • U-Value: 0.8-1.2 W/m²K
- • 75% heat loss reduction
- • Superior thermal efficiency
- • Minimal condensation
Acoustic Performance
Secondary Glazing
- • Up to 80% noise reduction
- • 100-200mm air gap
- • Superior for traffic noise
- • Acoustic glass options
Triple Glazing
- • Up to 75% noise reduction
- • Multiple glass layers
- • Good general noise control
- • Laminated glass available
When to Choose Each Option
Expert guidance on the best choice for your specific situation.
Choose Secondary Glazing When:
Heritage or Listed Properties
No planning permission required, preserves original character
Noise is Primary Concern
Superior acoustic performance, especially for traffic noise
Budget Considerations
50-70% lower cost than triple glazing replacement
Quick Installation Needed
Same-day installation with minimal disruption
Rental Properties
Reversible solution, lower investment required
Choose Triple Glazing When:
Maximum Thermal Efficiency
Highest possible energy savings and thermal performance
New Build or Major Renovation
Building from scratch or complete window replacement needed
Long-term Investment
Permanent solution with 25+ year lifespan
No Heritage Restrictions
Modern properties with no planning constraints
Passive House Standards
Meeting strict energy efficiency building standards
Need Help Choosing the Right Solution?
Our glazing experts will assess your property and requirements to recommend the most suitable and cost-effective solution for your needs.