Quieter rooms. Original windows preserved.
Made-to-measure acoustic secondary glazing for Scottish homes, sash and case windows and period properties.
Reduce noise while respecting historic character.
Retain historic joinery
Original windows can be important to the significance of a listed property. Internal secondary glazing may be preferable to replacement in some circumstances, but each building needs individual assessment.
Permissions and reversibility
Do not assume secondary glazing is automatically approved or exempt. Consult the planning authority and relevant heritage guidance before work.
Detailing around period features
Shutters, architraves, decorative reveals and window operation all affect system choice. A careful survey is essential.
Technical evidence
Ask for appropriate test reports and system details rather than relying on broad claims of noise reduction or approval.
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Discuss your project: Contact EcoShield for a tailored quotation.
Technical guide: selecting acoustic glazing for your property
Technical evidence and heritage permissions
Ask for technical information about the proposed system, including acoustic test evidence and fixing details. Secondary glazing is not automatically consent-free in a listed building; confirm requirements with the relevant Scottish planning authority before installation. Reversibility depends on the actual design and fixing method.
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.