• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Skip to footer
  • SoundStop Video
  • Products
    • SOUNDSTOP – Soundproofing / Sound Deadening Board
    • SOUND-ABATE – Acoustical Shielding for Wall Applications
    • STOMP – Acoustical Shielding for Floor & Wall Applications
  • Locate a Distributor
  • About
    • About SoundStop
    • SoundStop Video
    • Testimonials
    • Installation Guidelines
    • Safety Data Sheets
    • Guide Specifications
    • Soundproofing Course
  • Blog
  • Contact
    • Contact Us
    • Technical Support
    • Sales Support
    • Sample Request Form
    • Request Literature
    • Locate a Distributor

SOUNDSTOP

Soundproofing - Sound Deadening Fiberboard

green
  • ARCHITECT / DESIGNER
  • BUILDER / CONTRACTOR
  • BUILDING PRODUCTS DISTRIBUTOR
  • OCCUPANT / OWNER

SOUNDSTOP – Soundproofing / Sound Deadening Board

Made-In-USA-SoundStop

SOUNDSTOP
SOUND DEADENING FIBERBOARD

Soundstop Data SheetPrint Version | Brochure | Flyer | SDS Sheet | Guide Spec
Health Product Declaration | Sustainability Attributes
USDA Biopreferred Program Participant Certificate | CDPH VOC Emissions Certificate
Living Building Challenge Letter

DESCRIPTION
SOUNDSTOP sound deadening fiberboard is a high-quality, cost-effective solution to airborne sound reduction. SOUNDSTOP favorably increases both sound transmission class (STC) and outside inside transmission class (OITC) values of walls, ceilings, and floors by absorbing airborne sound vibrations. SOUNDSTOP adds sale/resale value to single- and multi-family home builders and owners at a low cost. Meeting national codes and building standards, SOUNDSTOP is as versatile as it is effective, perfect in applications ranging from walls to ceilings to floors. SOUNDSTOP will exceed your expectations for a quality building product, unmatched in cost-effectiveness and performance.

USES
SOUNDSTOP can be used in homes and commercial buildings where airborne noise and sound transmission from room to room needs to be eliminated. The product also blocks outside noise from heavy traffic, blaring horns, airports, children playing, or other exterior noises that are a concern.

SOUNDSTOP takes shock or sound vibrations that travel through drywall and stops the movement of the sound or shock to the other side. SOUNDSTOP deadens sound transfer from shared walls, corridors, media rooms, workshops, laundries, etc.

Soundproofing Sound Deadening Fiberboard SOUNDSTOP

FEATURES/BENEFITS

  • Most cost-effective noise reduction solution.
  • Creates quieter spaces for added enjoyment and privacy.
  • Adds resale value.
  • Installs easily behind gypsum drywall.
  • Contributes to LEED credits for LEED certification.

SIZING/PACKAGING
4′ x 8′ x ½” (46 Pieces per Pallet)
4′ x 9′ x ½” (90 Pieces per Pallet)*
*May not be available in all areas. Contact customer service for details.

SPECIFICATIONS

  • Classified by Underwriters Laboratories to ANSI/UL 263, UL File R25702
  • Conforms to ASTM C208, Type I, Sound deadening board
  • Fire Resistance Rated UL Wall Designs: U305, U309, U311, U339, U340, U387, U411, U465, V346, V324 and W307
  • Flame Spread Index 85 Smoke Developed 65
  • Sound Transmission Class (STC) 23

APPLICATION
SOUNDSTOP must always be installed behind gypsum drywall in interior wall and ceiling applications, or between two layers of subfloor in floor applications. Install SOUNDSTOP vertically to wall framing with a 1/8″ (3.2 mm) gap between adjoining sheets; at wall, floor and ceiling junctures; and around door and window openings. After application of SOUNDSTOP panels, it is recommended that the drywall is applied as soon as practical.

Existing Surfaces … Make sure that all light switch and electric outlet covers are removed. Walls must be free of any objects sticking out of the walls and ceiling. Proper size mud rings must be installed to electrical boxes before securing SOUNDSTOP. Apply SOUNDSTOP by using drywall screws or drywall nails that are long enough to penetrate the wall stud or ceiling joist at least ¾” (19.1 mm). Place a drywall nail or screw in each corner of SOUNDSTOP and across the middle of each panel. Then apply a bead of acoustical caulk where SOUNDSTOP meets the ceiling, wall corners, and the floor. Install drywall ensuring that joints are staggered and do not coincide with the SOUNDSTOP joints.

Use regular drywall nailing patterns to install drywall, making sure that the fasteners are long enough to penetrate through the drywall and SOUNDSTOP, and enter the ceiling joist or the wall stud at least 3/4″ (19.1 mm). Maximize use of full SOUND- STOP panels to minimize the number of seams.

New Construction … Apply SOUNDSTOP panels vertically with the studs, using proper size drywall nails or screws. Place a drywall nail or screw in each corner of SOUNDSTOP and one nail or screw in the middle of each board. Then apply a bead of acoustical caulk where SOUNDSTOP meets the ceiling, wall corners, and the floor. Install drywall ensuring that joints are staggered and do not coincide with the SOUNDSTOP joints. Maximize use of full SOUNDSTOP panels to minimize the number of seams.

Ceilings in New Construction … Install SOUNDSTOP parallel with the joists. Put one drywall nail or drywall screw in each corner of the SOUNDSTOP and a row of drywall nails or drywall screws across the middle of each SOUNDSTOP sheet. If the outside edges of SOUNDSTOP are not secure, more nailing may be required. Use as many full sheets of SOUNDSTOP as possible to minimize the number of seams. Run a bead of acoustical caulking around the edges of the ceiling before applying drywall. Install drywall ensuring that joints are staggered, and do not coincide with the SOUNDSTOP joints. Drywall nails or drywall screws must be long enough to penetrate through the drywall and SOUNDSTOP and into the ceiling joist at least 3/4″ (19.1 mm). The drywall nail or drywall screw length will vary depending on the thickness of the drywall. Multiple layers also will change the length of the drywall nails or drywall screws. Make sure proper width mud rings are installed to the electrical boxes before SOUNDSTOP and drywall are installed.

PRECAUTIONS
Do not install SOUNDSTOP directly under finished flooring applications. A 5/8″ (15.9 mm) plywood underlayment must be installed on top of the SOUNDSTOP before finished flooring applications. Do not install SOUNDSTOP under studded wall plates.

SOUNDSTOP must not be used in close proximity to chimneys, heater units, fireplaces, steam pipes, or other surfaces which could provide long-term exposure to excessive heat (maximum 212° F) without adequate thermal protection.

In all applications where recessed lighting is used, fixtures must meet local building code; must be UL certified, Type IC rated; and must be installed according to the fixture manufacturer’s instructions on clearance distance to combustible materials.

SOUNDSTOP must not be used as an exposed surfacing treatment.

MASTERFORMAT NUMBER AND TITLE
09 81 13 – Acoustic Board Insulation

LEED INFORMATION
May help contribute to:
MR Credit: Construction Waste Management MR Credit: Recycled Content
MR Credit: Regional Materials
MR Credit: Rapidly Renewable Materials EQ Credit: Acoustic Performance
EQ Prerequisite: Minimum Acoustic Performance (Schools) EQ Credit: Low-Emitting Materials

Learn more about SOUNDSTOP

SOUNDSTOP Fiberboard Testimonials

Product Downloads:

  • Brochure
  • Installation Guidelines
  • Flyer
  • Data Sheet
  • SDS Sheet
  • Guide Spec

usda fp

2024-08

Free Course: How Building Partitions and Floors Attenuate Sound @ AEC Daily
AIA – Free Online Continuing Education

AIA Credits and Training

warranty


Maximize sound deadening power by using SOUNDSTOP® in homes and commercial buildings.

BLUE RIDGE FIBERBOARD is proud to announce SOUNDSTOP® is now UL certified for the 1-hour fire rating in a load-bearing wall system when installed behind drywall. Our SOUNDSTOP® wall design is U387, details can be found on www.UL.com in their certifications directory.

1-Hour Fire Rating U387 Report

1-Hour Fire Rating U387 Design

soundstop-soundproofing-deadening-fiberboard-projectBLUE RIDGE FIBERBOARD SOUNDSTOP® deadens sound transfer from:

Neighbor to neighbor: Shared walls and corridors.

Room to room: Noise-generating media rooms, workshops, laundries, and children’s bedrooms and playrooms; offices and conference rooms.

Outside in: Dogs barking, traffic and industrial noises, trains and airplanes.

Easy to afford SOUNDSTOP® adds great sale/resale value to single and multi-family home owners. Multifamily home owners benefit from SOUNDSTOP® by significantly deadening noise transfer through neighbors’ shared walls and corridors.

Nationally available SOUNDSTOP® achieves STC ratings of 42 and better when installed behind drywall.

SOUNDSTOP® is your earth friendly choice. The 1/2″ x 4′ x 8′ or 9′ square-edged fiberboard sheets are made of organic materials including hardwood fibers.

Check with code officials in your area. SOUNDSTOP® must be installed behind drywall.

APPLICATIONS

stc 50 soundproofingBy simply installing SOUNDSTOP® on both sides of a standard wall partition, you are able to achieve Sound Transmission Class Ratings (STC) of 50; that’s 15 points higher than your standard wall partition. Adding an inch of SOUNDSTOP® not only achieves high STC Ratings but will also add to the resale value of a home.

STC Ratings
• 50 Loud Speech Not Heard
• 45 Some Loud Speech Barely Heard
• 35 Loud Speech Heard; Not Understood
• 30 Loud Speech Fairly Well Understood
• 25 Speech Heard Through Walls or Floors

*STC of 50 achieved through laboratory testing. Field results vary but have been known to achieve ratings upwards of 70, dependent on wall system.

Primary Sidebar

SOUNDSTOP FAMILY

  • SOUNDSTOP – Sound Board
  • SOUND-ABATE – Wall Cavity
  • STOMP – Floor

QUESTIONS?

  • Request Sample
  • Customer Service
  • Technical Support
  • Contact Your Salesperson
  • Testimonials
Locate a Distributor

Find an authorized SOUNDSTOP distributor near you.

Footer

SOUNDSTOP

Soundproofing fiberboard.

WEST COAST: 800-535-4088

EAST COAST: 800-233-8721

info@soundstop.net

For You

  • ARCHITECT / DESIGNER
  • BUILDER / CONTRACTOR
  • BUILDING PRODUCTS DISTRIBUTOR
  • OCCUPANT / OWNER

Products

  • SOUNDSTOP
  • SOUND-ABATE
  • STOMP

Company

  • About
  • Testimonials
  • Blog
  • Contact

New to Sound?

Help me solve my noise problem

Connect with us!

  • Facebook
  • Instagram
  • LinkedIn
  • Twitter

Copyright © 2025 BLUE RIDGE FIBERBOARD, INC. ALL RIGHTS RESERVED.
LEGAL NOTICES / IMPRINT PRIVACY AND COOKIES POLICY | TERMS OF USE

SOUNDSTOP - SILENCE IS IMMINENT