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CelluZorbe HD backer board

CelluZorbe™ HD Soundproofing Backer

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CelluZorbe™ HD Backer Board is a budget-friendly panel rated for both STC and NRC. This recycled material is environmentally conscious and perfect for applications needing both soundproofing and sound absorption.

Bulk discounts available. Save per panel at 14 and 28 panels.
$59.99
Covers 8.0 SF
$59.99

CelluZorbe™ HD Soundproofing Backer

CelluZorbe™ HD Soundproofing Backer is the most cost-effective and eco-friendly way to supercharge an existing barrier by adding both STC and NRC. Use the backer board with drywall to increase sound blocking and absorption or combine with plywood to build a silencer box.

 

Features

  • Thin acoustical backer to block sound (STC 15) and absorb sound (NRC: 0.50)
  • Made from 50% pre-consumer recycled cellulose fibers that don't itch
  • Easy to install to wood or drywall with adhesive
  • Eligible for LEED credits
  • Class A Fire Rated

 

Specs 

 Dimensions 

 24" x 48" (Up to 4' x 8') 
 Thickness   Nominal 1/2" 
 Weight   4.25 lbs
 R-Value   3.8 per inch
 Color  Natural
 Cuttable   Yes, in the field or in our shop 
 Itch & Irritation   None

 

 

Resources

 Spec Sheet   CelluZorbe™ HD Soundproofing Backer Product Sheet 
 Install Guide   CelluZorbe™ HD Soundproofing Backer Install Guide 

 

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Material Testing

Sound Transmission Class (STC)

 Frequency (Hz)  125   250   500   1000   2000   4000   STC 
 1/2" Celluzorbe™ HD Soundproofing Backer   12  14 13 14 17 21 15

 

Noise Reduction Coefficient (NRC)

 Frequency (Hz)  125   250   500   1000   2000   4000   NRC 
 1/2" Celluzorbe™ HD Soundproofing Backer   0.05   0.09   0.33   0.64   0.87   1.01   0.50 

 

 Tested Properties   Testing Method   Performance 
 Fire Rating   ASTM E84  Class A
 Thermal Resistance   ASTM C518  R-Value: 3.8 per inch 
 Corrosion Resistance   ASTM C739  Pass
 Fungal Resistance   ASTM C1338  Pass
 Moisture Absorption   ASTM C739  Pass
 Low VOC   ASTM V1.2  Pass

 

 


Installation Instructions

Wall Installation

Recommended Install Method: drywall screws or nails

Install Locations: walls (behind drywall), soundproof boxes, generator boxes, pool pump box, generator enclosure or generator shed, mechanical rooms, machinery enclosures, office partition walls, window noise reduction

 

Steps to Soundproof a Wall with CelluZorbe HD

    1. Measure the height of the wall to ensure you have the right amount.
      • Wherever needed, cut CelluZorbe HD using a sharp utility knife or table saw and a T-square to ensure you make a straight cut.
    2. Fasten CelluZorbe HD to the studs with screws or nails.
      • The preferred installation method is to install CelluZorbe HD to a wall that has insulation and framing, but no drywall yet. Ensure you have a sturdy install that is airtight and gapless.
    3. As you work your way across the wall, keep the ends of the panels directly next to each other. (AIRTIGHT!) The edges should connect over a stud.
    4. After you've finished getting CelluZorbe HD up on the wall, use your acoustic sealant caulk to seal ALL of the edges, both around and between the panels of CelluZorbe HD.
    5. Hang drywall over the top of CelluZorbe HD and seal with acoustical sealant.

 

Common Product Uses

  • Excellent for acoustical backer with soundproofing properties.
  • Budget friendly and environmentally friendly dual benefit acoustic and soundproof panels.
  • Use to build a silencer box with plywood or similar material for pool pumps and other similar equipment
  • Plugging gaps
  • Building generator sheds

 

Contact us if you have any questions!