Window Replacement Alternative
Discover why secondary glazing is often the smarter choice than complete window replacement. Get similar performance benefits at a fraction of the cost, time, and disruption.
Why Consider Window Replacement Alternatives?
Window replacement isn't always the best solution for improving performance
Complete window replacement can cost £800-2000+ per window
Replacement projects can take weeks with significant disruption
May require structural modifications and building work
Listed buildings and conservation areas have strict restrictions
Secondary Glazing vs Window Replacement
A comprehensive comparison of both solutions
Cost: £200-600 per window
Significantly lower investment
Installation: 1-2 days
Minimal disruption to daily life
No structural work
Fitted to existing window frames
Heritage friendly
Preserves original windows
Reversible
Can be removed if needed
Excellent performance
70% heat loss reduction, 80% noise reduction
Cost: £800-2000+ per window
High upfront investment
Installation: 1-4 weeks
Significant disruption
Structural modifications
May require building work
Heritage restrictions
Often not permitted in listed buildings
Permanent change
Cannot be easily reversed
Good performance
Modern double glazing performance
When Each Solution Works Best
Choosing the right approach for your specific situation
- Your existing windows are in good structural condition
- You live in a listed building or conservation area
- Budget is a primary concern
- You want minimal disruption
- You're a tenant or leaseholder
- You want to preserve original character
- Quick installation is important
- Existing windows are beyond repair
- You're doing a complete renovation
- Budget is not a constraint
- You want a completely new look
- No heritage restrictions apply
- Windows have security issues
- Long-term disruption is acceptable
Cost Comparison Example
Typical costs for a 3-bedroom London property with 12 windows
Secondary Glazing
Total project cost
- • £400 average per window
- • 1-2 day installation
- • No additional costs
- • Immediate benefits
Window Replacement
Total project cost
- • £1,500 average per window
- • 2-4 week installation
- • Additional building work
- • Disposal and cleanup costs
Save £13,200 with Secondary Glazing
73% cost reduction with similar performance benefits
Performance Comparison
How secondary glazing compares to new double glazing
Secondary Glazing U-Value
Double Glazing U-Value
Secondary glazing wins
Secondary Glazing Reduction
Double Glazing Reduction
Secondary glazing wins
Secondary Glazing
Window Replacement
Secondary glazing wins
Discover the Smart Alternative
Get expert advice on whether secondary glazing is the right choice for your property