Gold Bond® SoundBreak XP Wall® Board

For interior wall assemblies, where sound transmission between rooms or dwelling units is a concern.


3-Part Guide Specs




Sound Control and Damping

Dramatically reduce sound transmission between rooms

  • Superior sound damping, cost-efficient material that finishes easily and decorates in the same manner as standard gypsum board.
  • Features the GridMarX® guidemarks on the board to allow for faster and more accurate installation.

Turn down the volume when you incorporate SoundBreak XP Wall® Board into your wall assemblies. You will dramatically reduce sound transmission between rooms or dwelling units with this superior sound-damping gypsum board.

SoundBreak XP has an acoustically enhanced, high-density gypsum core encased in heavy, abrasion and mold/mildew/moisture resistant, 100% recycled PURPLE paper on both sides. Plus, SoundBreak XP provides the same great mold-inhibiting qualities as XP Gypsum Board.


  • Use it for interior wall assemblies, where sound transmission between rooms or dwelling units is a concern.
  • 5/8 in. (15.9 mm) SoundBreak XP Wall Board may be used where Type X Gypsum Board is specified in fire-rated assemblies.


Reduces Sound Transmission

  • Has a layer of viscoelastic damping polymer sandwiched between two pieces of high-density, mold-resistant gypsum board.
  • Provides high-rated Sound Class Transmission (STC) values per an independent third-party acoustical laboratory using ASTM E90 test procedures.

Works for Interior Projects

  • Use in a single layer or as a component of multi-layer wall assemblies.
  • Thinner than traditionally built high-STC wall partitions, increasing usable floor space.
  • Available in 1/2" and 5/8" (5/8" features a fire-resistant Type X core and is UL Classified).

Installs Fast and Easy

  • Installs like traditional gypsum board, without requiring additional clips and/or channels.
  • Finishes and decorates as easily as standard gypsum board.
  • Can cut by scoring deeply from both sides before snapping or by using a hand/power saw.
  • Features GridMarX® guide marks on the board to allow for faster and more accurate installation.

Inhibits Mold Growth

  • Helps inhibit mold growth with the highest possible score on mold tests (ASTM D3273 and ASTM G21).
  • Features SPORGARD® technology with extra mold-inhibiting properties.

Resists Moisture Better

  • Fights the effects of moisture before damage can occur.
  • Dimensionally stable product with negligible expansion and contraction under normal atmospheric conditions.

Low-Emitting Materials

  • Qualifies as a low-emitting material per California Section 01350 and CDPH Standard Method, v1.2. For more information, visit:


Products that suit any project criteria

Product Details


Acoustical, Drywall Panels




1/2", 5/8"



Related Resources

Product details and technical documentation


Drop-In Specs

Fire & Sound Selector


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UL GREENGUARD Certification

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National Gypsum Company is the exclusive service provider for products manufactured by Gold Bond Building Products, LLC.