01
Double Glazing
Excellent all-round performance and great value.
- Energy efficient
- Cost-effective
- Noise reduction
Double vs Triple Glazing
The Difference That Makes
A Warmer, Quieter Home
Compare double and triple glazing to understand the difference in thermal performance, noise reduction and cost.
Energy efficient
Made for your home
Expert guidance
Certass ApprovedA recognised standard of care
Insurance-Backed GuaranteeConfidence for your project · Backed by QANW
Professional InstallationA tidy finish, every time
01 · Compare the options
Two strong glazing choices.
Both options can improve comfort. The right specification depends on your home and priorities.
02
Triple Glazing
Maximum thermal performance and noise reduction.
- Energy efficient
- Reduced condensation
- Increased security
02 · Side by side
See How They Compare.
A simple comparison of the relative benefits of double and triple glazing.
| Feature | Double Glazing | Triple Glazing |
|---|---|---|
| Highest Energy rating | A+ | A++ |
| Lowest U Value (heat transfer) | 1.3 | 1.0 |
| G Value (solar gain) | 0.45 | 0.39 |
| L Value (air leakage) | 0 | 0 |
| Cost | ||
| Advantages | Energy efficient, Cost-effective, Noise reduction | Energy efficient, Reduced condensation, Increased security |
03 · Expert advice
Which is right for you?
The right choice depends on your property, comfort priorities and budget. Book a survey for advice tailored to your home.
Book a Survey View brochure (PDF)04 · Why choose JMD
Professional advice and installation.
Clear glazing guidance
Understand how each glazing option compares for your priorities.
Careful installation
Your glazing project is planned and fitted with attention to the finish.
Support throughout
A straightforward point of contact from survey to completion.
05 · Start with a conversation
Choose the right glazing for your home.
Talk to JMD Windows for tailored advice on double and triple glazing.