Details.
An on-site acoustic assessment for London homes using a calibrated Class 1 sound level meter. Includes peak noise and ambient noise-floor measurements, full frequency analysis, inspection of sash meeting rails, pulley stiles and frame joints for structural noise leaks, and a bespoke acoustic glazing specification covering glass type, air cavity depth and seal system. Typical residential surveys take 45 to 60 minutes. Surveys are complimentary when you proceed with a secondary glazing installation. Standalone surveys start from £150, refunded against installation orders over £3,000.