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Home > Undercoatings

KBS UnderCoat - Solvent-Based Asphalt

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KBS UnderCoat - Solvent-Based Asphalt

This superior undercoating provides protection in wheel wells, gas tanks, frames, and floor pans. KBS UnderCoat produces a very tough, yet flexible film with excellent adhesion, and helps prevent road salt from eating away at your car's metal and fiberglass.

Quart - $19.95  |  Gallon - $59.95
5 Gallon Pail - $249.95

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Part #: 76
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KBS UnderCoat Overview

TIP: For the ultimate rust protection, follow the KBS 3-Step System and treat the bare metal areas with RustSeal before applying KBS UnderCoat. KBS UnderCoat will have excellent adhesion to cured RustSeal.

KBS UnderCoat provides protection in wheel wells, gas tanks, frames, quarter panels, fenders, undercarriages, hoods, decks, and floor pans.

KBS UnderCoat produces a very tough, yet flexible film with excellent adhesion, and helps prevent road salt from eating away at your car's metal and fiberglass.

KBS UnderCoat offers excellent adhesion to metal or painted surfaces.

KBS UnderCoat provides economical paintable durability, plus moisture resistance & corrosion resistance, all in a matte black finish.

KBS UnderCoat also provides sound deadening by reducing road noise and vibration.

Note: Not for use on surfaces that will come in direct contact with heat or high temperatures such as mufflers or exhaust components.

KBS UnderCoat Features

  • Asphalt based
  • Sound Deadening
  • Chip resistant
  • Corrosion protection
  • Easy to apply
  • Excellent adhesion to metal
  • Excellent adhesion to painted surfaces
  • Dry To Touch In 1 Hour / Handle In 2 Hours
  • Uniform appearance
  • Spray, Brush, or Roll

KBS UnderCoat Applications

  • Wheel Wells
  • Gas Tanks
  • Frames
  • Quarter Panels
  • Fenders
  • Undercarriages
  • Hoods
  • Decks
  • Floor Pans

KBS UnderCoat Coverage

  • Quart covers up to 30 sq ft.
  • Gallon covers up to 120 sq ft.
  • 5 Gallon Pail covers up to 600 sq ft.

KBS UnderCoat Directions & Information Pages

KBS UnderCoat DirectionsKBS UnderCoat Support Forum
Search The KBS Support Forum

WARNING: This product contains a chemical known to the State of California to cause cancer and/or birth defects or other reproductive harm. www.P65Warnings.ca.gov

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Questions and Answers
+See All Questions

Q: Does UnderCoat provide sound deadening?

Asked by:  - 2/24/2015

A: Yes, KBS UnderCoat will provide sound deadening characteristics as KBS UnderCoat helps to solidify the metal and prevent the steel from vibrating and resonating sounds.

Was this answer helpful?   7 of 7 Customer(s) found this Answer helpful.

Q: Does this come in gloss black?

Asked by:  - 2/13/2015

A: At this time, the KBS UnderCoat just comes in a matte black finish similar to a standard undercoating but much more durable and uv stable than standard undercoatings.

Was this answer helpful?   5 of 5 Customer(s) found this Answer helpful.

Q: How do you apply the material?? Spray it on?? Brush it on??How long before it sets up??? Thanks for the reply..

Asked by:  - 2/15/2015

A: Yes, you can spray KBS UnderCoat. The complete directions for how to apply KBS UnderCoat include set up times can be found Here.

Was this answer helpful?   5 of 10 Customer(s) found this Answer helpful.

Q: Is the finished surface smooth like paint, or rough like bedliner coatings?

Asked by:  - 6/17/2015

A: The Solvent-Based KBS UnderCoat leaves a textured finish.

Was this answer helpful?   3 of 5 Customer(s) found this Answer helpful.

Customer Reviews - Others Say It Best +See All Reviews
review 3 Total Reviews Sorting:
Rating Easy To Apply. Looks Great!
Very easy to apply. Sprays beautifully. Looks great. High recommend!
  Did you find this helpful?    75 of 78 Found Helpful
Reviewed by:  from Knoxville, TN. - 4/22/2015
Rating As Good As Any Other
Applied super easy. It holds up great to salt and rock damage, and the wear and tear of the road. Dry time is about 30 min to the touch, and a full cure is about 24 hours. Great stuff for a super price.
  Did you find this helpful?    1 of 1 Found Helpful
Reviewed by:  from Springfield, IL. - 7/10/2015
Rating tank step 3
great instructions fast service thanks will try soon
  Did you find this helpful?    1 of 1 Found Helpful
Reviewed by:  from roy utah . - 9/19/2017
Review KBS UnderCoat - Solvent-Based Asphalt
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