Bri-Light Window

SOUNDPROOFING CONTRACT

SOUNDPROOFING PERFORMANCE COMMITMENT

ClassApplicable AreaDaytime LimitNighttime Limit
0Areas requiring exceptional quiet, including healthcare and premium residential districts50 dB40 dB
1Areas dominated by educational and cultural institutions55 dB45 dB
2Residential, commercial and mixed-use districts60 dB50 dB
3Industrial districts60 dB55 dB
4Urban road corridors and areas beside major transport routes70 dB55 dB

Quality and acceptance requirements

  • Window frames, laminated acoustic glass and sealing systems are specified in the contract.
  • Exterior and interior noise levels are measured and recorded before installation.
  • The agreed indoor result after installation becomes the project acceptance target.
  • Installation date, site address, warranty and after-sales terms are written into the agreement.
A MEASURABLE PROMISE Noise data and the agreed decibel target are recorded in writing, so performance can be verified at acceptance.
DECIBELS IN WRITING
QUIET WITHOUT WORRY
CLEAR PERFORMANCE TARGET
PEACE OF MIND
DATA AS PROOF
QUIET DELIVERED

SOUNDPROOFING CONTRACT

Agreement No.: ____________________

Client: ____________________Contractor: ____________________ Address: __________________Address: ______________________ Telephone: ________________Telephone: ____________________
  1. Scope and price. The contractor will fabricate and install the agreed soundproof window system according to the confirmed drawings and quotation.
  2. Payment schedule. A 40% fabrication deposit is due upon signing, 30% before delivery, and the remaining 30% after inspection and acceptance.
  3. Specifications. Profiles, glass configuration, hardware, opening method and finish follow the attached project schedule.
  4. Delivery and installation. Production normally takes 15–20 days, followed by local installation. The parties will confirm the installation date and site access arrangements in advance.
  5. Inspection. Product condition, operation, sealing and workmanship will be checked jointly after installation.
  6. Decibel commitment. Pre-installation and post-installation readings will be recorded using the agreed measurement method. The written indoor target is used for acceptance.
  7. Warranty and service. A three-year product warranty applies after installation, with lifetime maintenance support available.
Client signature
Contractor signature

Illustrative agreement only. Final specifications, performance targets and contract amount are completed according to the on-site assessment.