Quieter rooms. Original windows preserved.
Made-to-measure acoustic secondary glazing for Scottish homes, sash and case windows and period properties.
Which approach is better for your existing windows?
Different approaches
Replacement double glazing replaces or alters the existing window assembly; secondary glazing introduces an additional inner window. Each has different acoustic, thermal, appearance and access considerations.
Why spacing matters
A suitably designed air gap between the existing pane and the secondary pane can be useful acoustically. The result also depends on glass mass, laminated interlayers and airtightness.
Heritage and conservation
Keeping the original window can be especially relevant for listed or traditional buildings. Consent and acceptability should be confirmed for the specific property.
Make a fair comparison
Compare independently tested complete configurations where available. Do not compare a laboratory figure for one system with an unverified marketing claim for another.
Explore related acoustic glazing advice
- Acoustic Secondary Glazing in Scotland
- Acoustic Secondary Glazing Costs
- Secondary Glazing for Traffic Noise
- Acoustic Secondary Glazing for Sash Windows
- Acoustic Secondary Glazing Edinburgh
- Acoustic Glazing for Listed Buildings
Discuss your project: Contact EcoShield for a tailored quotation.
Technical guide: selecting acoustic glazing for your property
Compare tested assemblies, not just glass types
There is no universal acoustic winner for every window. A secondary glazing arrangement with an appropriately designed air gap can perform differently from a sealed double-glazed unit. Compare laboratory evidence for the complete specified systems, with attention to Rw and spectrum adaptation terms, rather than assuming a particular result.
Understanding acoustic glazing test figures
Manufacturers may quote Rw, a laboratory weighted sound reduction index in decibels. Rw + C and Rw + Ctr are spectrum-adapted ratings; Ctr is especially relevant when assessing noise containing more low-frequency energy, such as road traffic. These values are not a promise of the decibel reduction measured inside an occupied room.
What determines the finished result?
The original window, the separation between the panes, glazing composition, perimeter seals and installation detailing all affect acoustic performance. Air leakage and sound passing through vents, walls or adjoining construction can limit the benefit. The right solution is chosen for the complete window and the actual noise source, not by glass thickness alone.
Granada technical resources
For additional manufacturer information, see Granada’s noise-reducing windows guidance and its acoustic performance calculator. Calculator results are indicative and depend on the selected configurations and assumptions; ask EcoShield to review a suitable specification for your property.
Need advice on your windows? Request an EcoShield acoustic glazing quotation.
Tell us about your noise problem
Send photographs, your location and the number of affected windows. We can discuss a suitable survey and quotation.