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Add Mass with Extra Drywall to boost Wall STC

Published October 24, 2025 at 1600 × 1060 in How to Soundproof a Wall
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  • Products
    • Membranes
      • Wall Blokker Lite
      • Wall Blokker
      • Wall Blokker PRO
    • Underlayments
      • Floor Blokker Lite
      • Floor Blokker
      • AcoustiStep
    • Acoustic Treatments
      • Acoustic Wall Panels
      • Acoustic Stretched Fabric Wall
      • Acoustic Ceiling Clouds
      • Acoustic Ceiling Baffles
      • Acoustic Art Panels
      • Acoustic Felt Panels
      • Acoustic Diffusers
      • Acoustical Fabric
      • 3rd Party Acoustic Products
    • Sound Masking
      • Classic Sound Masking
      • Networked Sound Masking
  • Case Studies
    • 🏢 By Industry
      • Aviation
      • Clubhouse
      • Education
      • Entertainment
      • Government // Civic
      • Healthcare
      • Hospitality
      • Multi-Family
      • Office // Commercial
      • Restaurant
      • Worship
    • 🛠️ By Use Case
      • Absorption
      • Blocking
      • Consulting
      • Sound Masking
    • 📦 By Product
      • ACT & Specialty Ceilings
      • Acoustic Wall Panels
      • Stretched Fabric Wall
      • Sound Masking
      • Wall Blokker
  • Guides
    • 🎓 Ratings 101
      • STC Rating 101
      • NRC Rating 101
      • IIC Rating 101
      • RT60 Rating 101
      • CAC Rating 101
      • NC Rating 101
      • STL Rating 101
      • SII Rating 101
      • OITC Rating 101
    • 🎯 Design Targets
      • Target STC Ratings
      • Target IIC Ratings
      • Target Reverb Times
    • 🧾 Reference Guides
      • NIC vs STC
      • STC Rules of Thumb
      • Sound Absorption Coefficients
      • STC Ratings for Walls
      • Explaining STC, IIC, & Delta IIC
      • Resilient Channel: Uses & Mistakes
      • MLV Sound Barrier
  • Resources
    • 📐 Calculators
      • Room Acoustics Calculator
      • STC Calculator
      • STC Audio Comparison
      • IIC Calculator
      • Sound Masking Calculator
      • ACT Estimator
    • 📁 Reference Library
      • STC & IIC Lab Tests
      • STC Rated Wall Assemblies
      • Acoustic Details
      • Product Specifications
  • Consulting
  • About Us
  • Contact Us
  • (888) 815-9691
    Talk to an Expert!