SoundBreak XP® Retrofit Board

Acoustically Enhanced High-Density Gypsum Retrofit Board

Turn down the noise when you incorporate SoundBreak XP Retrofit® Board into your existing 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 superior mold-inhibiting qualities.

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Product Data Sheets CSI Specifications Installation Instructions Acoustical Tests Additional Resources

Product Overview

Reduces Sound Transmission

- Has a layer of viscoelastic damping polymer pre-applied to high-density, mold-resistant gypsum board
- When installing over an existing interior wall assembly, SoundBreak XP Retrofit enhances Sound Transmission Class (STC) values per an independent third-party acoustical laboratory using ASTM E90 test procedures

Works For Interior Projects

- Use SoundBreak XP Retrofit to improve the acoustical performance of an existing wall assembly, and to achieve a higher Sound Transmission Class (STC) rating for existing interior gypsum board walls where sound transmission has become a concern
- Thinner than traditionally built high-STC wall partitions, increasing usable floor space
- Provides greater resistance to surface abuse and indentation than standard gypsum board (per ASTM C1629)

Installs Fast And Easy

- Install 5/16 in. (7.9 mm) thick SoundBreak XP Retrofit over existing interior gypsum board walls in residential, multifamily and commercial applications for additional sound damping between rooms or dwelling units
- Finishes and decorates as easily as standard gypsum board
- For speed of installation, GridMarX® guide marks are printed on the paper surface.
- Can cut by scoring deeply from both sides before snapping or by using a hand/power saw

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
- Has less than 5% water absorption per ASTM C473

Resists Moisture Better

- Fights the effects of moisture before damage can occur
- Helps to reinforce the structure’s integrity and strength
- Reduces or eliminates swelling or dimensional movement caused by moisture
Product Specs

Applications

Install 5/16 in. (7.9 mm) thick SoundBreak XP Retrofit over existing interior gypsum board walls in residential, multifamily and commercial applications for additional sound damping between rooms or dwelling units.

Material Composition

Acoustically enhanced high-density mold-resistant gypsum core with inner layer of viscoelastic damping polymer. Wrapped with 100% recycled PURPLE paper on both sides.

Thickness

5/16" (7.9mm)

Size

Width
Nominal 48" (1219 mm)
Length
8' through 12' (2438 mm - 3657 mm)

Edge Detail

Tapered

Color

Purple
Acoustical Specs
- Use SoundBreak XP Retrofit to improve the acoustical performance of an existing wall assembly, and to achieve a higher Sound Transmission Class (STC) rating for existing interior gypsum board walls where sound transmission has become a concern.
- Achieves increased STC values in a thinner wall assembly, increasing usable floor space.
Material Performance

Fire Performance

Class A Fire Rated per ASTM E84

Environmental

GREENGUARD Gold certified for low VOC Emissions
Passes ASTM D3273 with score of 10 (best possible score for mold resistance)
Passes ASTM G21 with score of 0 (best possible score for mold resistance)

Material Properties

Surface abrasion resistance level 3 classification per ASTM C1629
Soft body impact resistance level 2 classification per ASTM C1629
Indentation resistance level 1 classification per ASTM C1629
Hard body impact resistance level 1 classification per ASTM C1629