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Spectrum™ Sound Deadening Spray Kits

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Spectrum™ Sound Deadening Spray Kits



The Second Skin Spectrum™ Spray Kit is the complete package if you're looking for a spray on sound deadener. Our custom formula for this high heat, viscoelastic polymer delivers premier sound deadening through spray or brush on application methods. In addition to being an excellent substitute for Damplifier Pro™, Spectrum™ can be used in addition to our mat products due to its effectiveness in hard to reach areas. Spectrum™ is an excellent wheel well spray liner and for car undercoating soundproofing - both of which will reduce road noise. Spectrum™'s formula allows it to deaden metal and stop vibrations wherever you apply it.






 Size Options    2, 3, 5, or 10 gallon packages 
 Square Foot Coverage   20 sq ft per gallon at 2mm thickness 
 Total Thickness   2-3mm, max 5mm 
 Weight per Gallon  11 lbs (cured), 14 lbs (wet) 
 Water Resistance    Waterproof and rustproof 
 Temperature Resistance   400°F
 Application Temperature   Above 50°F for first 24 hour dry period
 Primer Required?   Shiny/waxy surfaces will require a primer 




 Spec Sheet   Spectrum Product Sheet 
 Install Guide   Spectrum™ Spray Install Guide 




Material Testing

Acoustic Loss Factor @ 200Hz

 Temperature  23°F   50°F   77°F    104°F    131°F 
 Spectrum (2mm)   0.037   0.083  0.215   0.105   0.034 
 Spectrum (3mm)   0.066  0.119   0.363   0.258   0.068 
 Spectrum (5mm)   0.081   0.165   0.534   0.379   0.093 


 Tested Properties   Performance 
 Color  Blue (wet), Black (cured)
 Viscosity   4000 centipoise 
 Specific Gravity   1.45 
 Max Temperature   400°F 
 Solubility   Soluble
 Odor   None (when cured), Mild (as solvent) 
 Flammability   Self-extinguishing
 Water Resistance   Waterproof
 Shelf Life  1 year (unopened), 30 days (opened) 



Installation Instructions

  • Clean up with water within 30 minutes of application. Do not wait longer or Spectrum™ will dry. Always clean the spray gun between coats by running water through it.
  • If applying multiple layers of Spectrum™, wait 30-60 minutes for the product to cure and change color from blue to black.
  • It must be above 50°F for the entire 24 hours cure period after applying Spectrum™. Dry times increase with low temperatures and high humidity. If you expect longer than usual dry times, we recommend thinner layers (0.5mm instead of 1mm) to the same total thickness.
  • Spectrum™ is designed to adhere to metal. Do not apply to plastic or fiberglass without the proper primer. If applying to a high gloss wax coat, you must sand down and apply a primer.
  • Do not freeze Spectrum! If it does freeze, do not mix, shake, or move until it has completely thawed.
  • Wait 24-36 hours (depending on humidity) before putting upholstery back in the vehicle. Wait 7 to 10 days before painting or applying a bedliner.
  • As Spectrum cures, its deadening properties will continue to increase. Vibration damping doubles from 4 hours --> 48 hours, and continues improving for 7 days.
  • Spectrum™ is not a bed liner. Even after it has cured, it can be damaged by heavy impact.
  • Shelf life of 1 year when stored at room temperature



Common Product Uses

  • Under the wheel wells, floors, doors, trunk, firewall, and/or roof of your vehicle.
  • Van conversions 
  • Metal roofs
  • Metallic surfaces that vibrate
  • Buses, trains, and other transportation apparatuses
  • Use anywhere there is metal!