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DEi 050100 Boom Mat Under Carpet Sound Deadening Layer, 24 x 54 Inch
DEi 050100 Boom Mat Under Carpet Sound Deadening Layer, 24 x 54 Inch

DEi 050100 Boom Mat Under Carpet Sound Deadening Layer, 24 x 54 Inch

Universal Fit, 24.00" Overall Length, 54.00" Overall Width, .38" Overall Thickness

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DEi 050100 Boom Mat Under Carpet Sound Deadening Layer, 24 x 54 Inch
DEi 050100 Boom Mat Under Carpet Sound Deadening Layer, 24 x 54 Inch
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  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.


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Boom Mat Undercarpet™ (UC™) is a second layer sound deadening and insulation mat that will help you maintain a quality ride experience by preventing unwanted noise from being transferred into the vehicle’s interior.  In addition to its sound deadening properties, this two layer acoustic material provides superior insulation keeping vehicles cool in the heat of summer, and warmer in cold temperature climates.

UC is made up of a top layer of flexible, one pound per square foot mass loaded barrier material, and a bottom layer of high quality industrial acoustical marine grade foam. These combined materials offer the most ideal way to maintain a “new car” driving experience by eliminating squeaks, rattles, vibration and unwanted engine noise and heat.

UC can be added under carpet, on fire walls, or anywhere in the interior of a vehicle where additional sound deadening or insulation is needed. For the ultimate experience in a quiet ride and interior comfort, Boom Mat recommends using UC over Boom Mat vibration dampening material.

UC can be mechanically fastened or tacked in place with Boom Mat Hi-Temp Spray Adhesive (# 356-10490) including vertical and overhead surfaces.  UC is 3/8” thick and available in two sizes: 24” X 54” (9 sq. ft.), 48” X 54” (18 sq. ft.) under part number 356-50101.

  • 5.6 db(A) reduction... a 25% noise reduction over leading competitors product
  • Perfect to use over Boom Mat
  • Insulate your interior from heat and cold
  • Provides additional sound deadening
  • 3/8” thick
  • Covers 9 square feet

Note: For the quietest ride possible, DEi recommends using Under Carpet as a second layer over Boom Mat Damping Material .

Under Carpet Sound Deadener Installation Instructions (PDF)

Boom Mat Reference Guide (PDF)

Learn more about identifying and solving vehicle noise issues by reading Boom Mat's tech article. Science of Noise.

Learn more about the advantages of Boom Mat insulation as well as proper installation by reading Super Chevy Magazine's tech article. Boom Mat Installation - Quiet Cabin.



  • Maximum noise control
  • Enhances stereo performance and sound
  • A quiet and comfortable interior
  • No mold or mildew issues
  • Perfect combination of noise and vibration control

Where to use:

  • Firewalls
  • Floor boards
  • Transmission tunnels
  • Behind rear seats
  • Inner wheel wells
  • Trunk floors
  • Rear quarter panels


Some parts are not legal for use in California or other states with similar laws/regulations

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  • HushMat “Easy to Install – No Prep” Adhesion test WD40 on Chop Cut Rebuild show demonstrates the superior adhesive quality of HushMat sound deadening & thermal insulation material.
  • This video summarizes the brand differences and value offered by HushMat compared to the “off-shore” competition. HushMat MADE IN THE USA for three decades and proud of it.
  • Video demonstration of the ease of installation and quality of HushMat sound deadening & thermal insulation material. Check out this video for installation tips/tricks to aid with installation.

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