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20 Best Undercoating For Classic Cars (2023 Updated)

Undercoating is a black, tar-like coating that is applied to the underside of a vehicle to protect it from rust and corrosion. It is typically applied to the frame, suspension, and other exposed metal parts.

20 Best Undercoating For Classic Cars

Product Image Product Name Features Price

3M 03584 Professional Grade Rubberized Undercoating – 16 oz.

  • 16 Ounce (Pack Of 1)

Rust-Oleum Rubberized Undercoating Spray – 15 oz can

  • It protects vehicles from moisture, rust, road debris and more
  • It also reduce noise
  • Protection from water, salt and other chemicals

Rusfre 1020F6 Automotive Spray-On Rubberized Undercoating Material 1-Gallon

  • Sprays evenly, cover effectively and sound deadens.
  • Reinforced Fibers and Rust Inhibitors.
  • No Asbestos.

Woolwax Auto/Truck Lanolin Undercoating 1 Gallon Pail. Black

  • Woolwax has little to no smell.
  • Woolwax stays wet and is always active and creeping into inaccessible areas.
  • WOOLWAX lanolin undercoating is formulated to be more resistant to wash-off.

Gunk T1617R 16 oz Rubberized Undercoating

  • Designed to protect the car body from rust and corrosion
  • Provides a tough, flexible and moisture-proof coating
  • Undercoating seals out moisture and dust

Permatex 80072 Car Undercoating, 16 oz, Size: 20

  • condition: New
  • Brand: Permatex

Rust-Oleum 248657 Rubberized Undercoating, Black, 15 oz

  • Auto & Truck Maintenance
  • Country of manufacture: United States

Permatex 81833 Heavy-Duty Rubberized Undercoating

  • Seals, protects, and insulates; rubberized for maximum durability
  • Professional strength, all-purpose undercoating formulated to offer excellent protection and coverage

Permatex Undercoating – 16 oz

  • Protects against moisture, salt and corrosion
  • No sag or drip
  • Soundproofs and insulates

Dupli-Color UC101 Paintable Rubberized Undercoat 16 oz

  • 6 Pack

3M 03584 Professional Grade Rubberized Undercoating 16 oz Case of 6 at MechanicSurplus.com

  • Use on cars, trucks, and recreational vehicles
  • Coating helps prevent damage corrosion
  • Helps reduce road noise

Rust-Oleum Automotive Professional Undercoating Black 15 oz. Spray

  • Perfect for use on bare or primed metal underbodies of cars, trucks, trailers, RVs and more
  • Professional-grade formula provides superior protection against corrosion and damage from water, salt and other chemicals

Permatex 80072 Undercoating

  • condition: New
  • Brand: Permatex

SEM Products 40463 – Low VOC Undercoating

  • Uniform appearance
  • Excellent adhesion
  • Economical

Rust-Oleum 248657 Rubberized Undercoating Spray 15 oz Black

  • Dries To The Touch In 30 Minutes And Covers Up To 10-12 Sq. Ft. Per Can
  • For Use On Wheel Wells And Automotive Underbodies
3M 03584 Professional Grade Rubberized Undercoating – 16 oz.
  • 16 Ounce (Pack Of 1)
Rust-Oleum Rubberized Undercoating Spray – 15 oz can
  • It protects vehicles from moisture, rust, road debris and more
  • It also reduce noise
  • Protection from water, salt and other chemicals
Rusfre 1020F6 Automotive Spray-On Rubberized Undercoating Material 1-Gallon
  • Sprays evenly, cover effectively and sound deadens.
  • Reinforced Fibers and Rust Inhibitors.
  • No Asbestos.
Woolwax Auto/Truck Lanolin Undercoating 1 Gallon Pail. Black
  • Woolwax has little to no smell.
  • Woolwax stays wet and is always active and creeping into inaccessible areas.
  • WOOLWAX lanolin undercoating is formulated to be more resistant to wash-off.
Gunk T1617R 16 oz Rubberized Undercoating
  • Designed to protect the car body from rust and corrosion
  • Provides a tough, flexible and moisture-proof coating
  • Undercoating seals out moisture and dust
Permatex 80072 Car Undercoating, 16 oz, Size: 20
  • condition: New
  • Brand: Permatex
Rust-Oleum 248657 Rubberized Undercoating, Black, 15 oz
  • Auto & Truck Maintenance
  • Country of manufacture: United States
Permatex 81833 Heavy-Duty Rubberized Undercoating
  • Seals, protects, and insulates; rubberized for maximum durability
  • Professional strength, all-purpose undercoating formulated to offer excellent protection and coverage
Permatex Undercoating – 16 oz
  • Protects against moisture, salt and corrosion
  • No sag or drip
  • Soundproofs and insulates
Dupli-Color UC101 Paintable Rubberized Undercoat 16 oz
  • 6 Pack
3M 03584 Professional Grade Rubberized Undercoating 16 oz Case of 6 at MechanicSurplus.com
  • Use on cars, trucks, and recreational vehicles
  • Coating helps prevent damage corrosion
  • Helps reduce road noise
Rust-Oleum Automotive Professional Undercoating Black 15 oz. Spray
  • Perfect for use on bare or primed metal underbodies of cars, trucks, trailers, RVs and more
  • Professional-grade formula provides superior protection against corrosion and damage from water, salt and other chemicals
Permatex 80072 Undercoating
  • condition: New
  • Brand: Permatex
SEM Products 40463 – Low VOC Undercoating
  • Uniform appearance
  • Excellent adhesion
  • Economical
Rust-Oleum 248657 Rubberized Undercoating Spray 15 oz Black
  • Dries To The Touch In 30 Minutes And Covers Up To 10-12 Sq. Ft. Per Can
  • For Use On Wheel Wells And Automotive Underbodies

1. 3M 03584 Professional Grade Rubberized Undercoating – 16 oz.

3M 03584 Professional Grade Rubberized Undercoating - 16 oz.

  • 16 Ounce (Pack Of 1)

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Sold By Price
Amazon.com
eBay
Parts Express
JBTools.com

Product Details

Specifications

Details
Brand 3M
Product Form Spray
Package Size 16 oz
Color Black
Package Quantity 1 each

Reviews From Real Customers

CH3NO2
warren

2. Rust-Oleum Rubberized Undercoating Spray – 15 oz can

Rust-Oleum Rubberized Undercoating Spray - 15 oz can

  • It protects vehicles from moisture, rust, road debris and more
  • It also reduce noise
  • Protection from water, salt and other chemicals
  • Resists Rust

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Sold By Price
Amazon.com
Home Depot
Lowe’s
Paint Life Supply Co.

Product Details

Specifications

Details
Item has MSDS (SDS)? Y
Package Weight 0.25
Dry to Handle 30 minutes
Dry to Re-Coat 1 hour
Dry to Touch Time 1 hour

Reviews From Real Customers

Jude
martin
Lance

3. Rusfre 1020F6 Automotive Spray-On Rubberized Undercoating Material 1-Gallon

Rusfre 1020F6 Automotive Spray-On Rubberized Undercoating Material 1-Gallon

  • Sprays evenly, cover effectively and sound deadens.
  • Reinforced Fibers and Rust Inhibitors.
  • No Asbestos.
  • For best results spray at room temperatures or higher, stir and shake well before use.
  • Black Color Only!

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Sold By Price
Amazon.com – Seller
eBay
TP Tools & Equipment
Eagle National Supply Co

Product Details

Specifications

Details
Weight 9 lb

Reviews From Real Customers

55terry1
jayhortonsprivateshop
ware4434

4. Woolwax Auto/Truck Lanolin Undercoating 1 Gallon Pail. Black

Woolwax Auto/Truck Lanolin Undercoating 1 Gallon Pail. Black

  • Woolwax has little to no smell.
  • Woolwax stays wet and is always active and creeping into inaccessible areas.
  • WOOLWAX lanolin undercoating is formulated to be more resistant to wash-off.

Check Latest Price

Sold By Price
Amazon.com – Seller
eBay
Newegg.com – woolwax
Hamilton Marine

Product Details

Specifications

Details
Package Dimensions 8.82 x 8.46 x 8.23 inches
Country of Origin USA
Is Discontinued By Manufacturer No

Reviews From Real Customers

6*kids
scuden_31
dart6970

5. Gunk T1617R 16 oz Rubberized Undercoating

Gunk T1617R 16 oz Rubberized Undercoating

  • Designed to protect the car body from rust and corrosion
  • Provides a tough, flexible and moisture-proof coating
  • Undercoating seals out moisture and dust
  • Improves auto body soundproofing
  • Dampens Sound and Vibration

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Sold By Price
Amazon.com – Seller
eBay
Walmart
Valu Home Centers

Product Details

Specifications

Details
Product Type Rubber Coating
Time Before Recoating 20 min
Recommended Surface Automotive
Indoor or Outdoor Outdoor
Primer Required No

Reviews From Real Customers

Mason

6. Permatex 80072 Car Undercoating, 16 oz, Size: 20

Permatex 80072 Car Undercoating, 16 oz, Size: 20

  • condition: New
  • Brand: Permatex

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Sold By Price
Amazon
eBay – beachaudio

Product Details

Reviews From Real Customers

Voonderbar
JrJoe
Gunn2311

7. Rust-Oleum 248657 Rubberized Undercoating, Black, 15 oz

Rust-Oleum 248657 Rubberized Undercoating, Black, 15 oz

  • Auto & Truck Maintenance
  • Country of manufacture: United States

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Sold By Price
Amazon
Walmart

Product Details

8. 15 oz Rust-Oleum Brands 248657 Black Automotive Rubberized Undercoating Pack of 6

15 oz Rust-Oleum Brands 248657 Black Automotive Rubberized Undercoating Pack of 6

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Amazon
eBay
Walmart – Paint Supply
Home Depot

Product Details

Specifications

Details
Paint Product Form Aerosol Spray
Surface Material Use Metal
Application Method Aerosol
Coating Product Category Paint
Color/Finish Flat Black

9. Permatex 81833 Heavy-Duty Rubberized Undercoating

Permatex 81833 Heavy-Duty Rubberized Undercoating

  • Seals, protects, and insulates; rubberized for maximum durability
  • Professional strength, all-purpose undercoating formulated to offer excellent protection and coverage
  • Combines the flexibility and sealing properties of rubber with superior coating thickness

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Sold By Price
Amazon
eBay
Walmart
NAPA Auto Parts

Product Details

Specifications

Details
Units in Package 1
Unit Size 16 oz aerosol can

10. Permatex Undercoating – 16 oz

Permatex Undercoating - 16 oz

  • Protects against moisture, salt and corrosion
  • No sag or drip
  • Soundproofs and insulates

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Amazon
eBay
Cox Hardware and Lumber
Global Industrial

Product Details

Specifications

Details
Units in Package 1
Unit Size 16 oz
Directions Directions: Tap bottom of an to loosen agitator ball. If ball does not loosen, shake can until agitator ball is heard. Shake can for at least five (5) minutes after hearing agitator ball. For best adhesion, apply only to clean, dry surfaces. Apply a uniform coating, holding can 10 to 12 inches from surface. Multiple thin coats are most effective allowing 15 to 20 minutes between coats (shake well before reapplying). Allow to dry for 24 hours.
Warnings Warning: Cancer – www.P65Warnings.ca.gov. Precautionary Statements – Prevention: Contains: Water, Propane, Asphalt (petroleum), Toluene, mineral spirits, acetone, butane, calcium carbonate, kaolin, magnesium silicate. Obtain special instructions before use. Do not handle until all safety precautions have been read and understood. Use personal protective equipment as required. Wash face, hands and any exposed skin thoroughly after handling. Do not breathe dust/fume/gas/mist/vapors/spray. Do not eat drink or smoke when using this product. Use only outdoors or in a well-ventilated area. Keep away from heat, sparks, open flames and hot surfaces – No smoking. Do not spray on an open flames or other ignition source. Pressurized container: Do not pierce or burn, even after use. Pressurized container: may burst if heated. Precautionary Statements – Response: If in Eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing if eye irritation persists: Get medical advice/attention. If on Skin: Wash with plenty of soap and water. If skin iritation occurs: Get medical advice/attention. Take off contaminated clothing and wash before reuse. If in Inhaled: Remove victim to fresh air and keep at rest in a position comfortable for breathing. Call a Poison Center or doctor/physician it you feel unwell. If Swallowed: Immediately call a Poison Center or doctor/physician. Do not induce vomiting. Precautionary Statements – Storage: Store locked up. Protect from sunlight and do not expose to temperatures exceeding 120 degrees F/49 degrees C. Statements – Disposal: Dispose of contents/container to an approved waste disposal plant. Danger: Extremely flammable contents under pressure. Harmful if swallowed or inhaled. Skin and eye irritant. Read carefully other cautions on back panel. Important: Avoid application of any under – coating or rust proofing materials closer than 12 inches to any part of exhaust system or catalytic converter. Never spray directly onto exhaust system or catalytic converter. For cleanup, use mineral spirits or kerosene. This product is not considered paintable. Extremely flammable aerosol. Contains gas under pressure; may explode if heated. Causes skin irritation. May cause genetic defects. Suspected of damaging fertility or the unborn child. May cause drowsiness or dizziness. Causes damage to organs through prolonged or repeated exposure. May be fatal if swallowed and enters airways. Keep out of the reach of children.

11. Dupli-Color UC101 Paintable Rubberized Undercoat 16 oz

Dupli-Color UC101 Paintable Rubberized Undercoat 16 oz

  • 6 Pack

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Amazon
Walmart
Eastwood Company
Advance Auto Parts

Product Details

Specifications

Details
Item has MSDS (SDS)? Y
Package Weight 16.75
Dry to Handle 1 Hour
Dry to Re-Coat No recoat window
Dry to Touch Time 2 Hours

Reviews From Real Customers

L3 Master tech

12. 3M 03584 Professional Grade Rubberized Undercoating 16 oz Case of 6 at MechanicSurplus.com

3M 03584 Professional Grade Rubberized Undercoating 16 oz Case of 6 at MechanicSurplus.com

  • Use on cars, trucks, and recreational vehicles
  • Coating helps prevent damage corrosion
  • Helps reduce road noise
  • Clean application

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Sold By Price
Amazon
MechanicSurplus.com

Product Details

13. Rust-Oleum Automotive Professional Undercoating Black 15 oz. Spray

Rust-Oleum Automotive Professional Undercoating Black 15 oz. Spray

  • Perfect for use on bare or primed metal underbodies of cars, trucks, trailers, RVs and more
  • Professional-grade formula provides superior protection against corrosion and damage from water, salt and other chemicals
  • Dries to the touch in 1 hour and covers up to 10-15 sq. ft. per can
  • Undercoating helps deaden sound and reduce damage to parts
  • Features a wide, comfort spray tip and any-angle spray technology for easy painting even upside down

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Amazon
Walmart
Lowe’s
Tractor Supply Company

Product Details

Specifications

Details
Item has MSDS (SDS)? Y
Can Be Sold In OTC States Yes
Color Family Blacks
Color / Finish Flat Black
Combustible Yes

Reviews From Real Customers

Browntrout
Duke 69 chevelle

14. Permatex 80072 Undercoating

Permatex 80072 Undercoating

  • condition: New
  • Brand: Permatex

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Amazon
Walmart – Advance Cycle Parts
RVupgrades.com
L&M Fleet Supply

Product Details

15. Permatex Heavy-Duty Rubberized Undercoating | 12/16oz. Cans 81833

Permatex Heavy-Duty Rubberized Undercoating | 12/16oz. Cans 81833

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Amazon
Petroleum Service Company

Product Details

16. Rust-Oleum 248657 15 Ounce Rubberized Undercoating, Size: 15 oz

Rust-Oleum 248657 15 Ounce Rubberized Undercoating, Size: 15 oz

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Amazon
Walmart – Supply the Home
AutoZone

Product Details

17. 2pc Rust-Oleum 248657 Automotive Rubberized Undercoating Spray, 15 oz

2pc Rust-Oleum 248657 Automotive Rubberized Undercoating Spray, 15 oz

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Amazon
Walmart

Product Details

18. Titeseal Rubberized Undercoating – T1617R

Titeseal Rubberized Undercoating - T1617R

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Amazon
Acme Tools
MSC Industrial Supply

Product Details

Specifications

Details
Treatment Type Paintable Undercoating; Rubberized
Container Type Aerosol Can
Net Fill 16oz
Application Method Spray
Number of Pieces 12; 12

19. SEM Products 40463 – Low VOC Undercoating

SEM Products 40463 - Low VOC Undercoating

  • Uniform appearance
  • Excellent adhesion
  • Economical

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Sold By Price
Amazon
Walmart
Eastwood Company
DK Hardware

Product Details

Specifications

Details
Category Paints & Coatings

Reviews From Real Customers

KEVIN
JOSHUA
JEFFREY

20. Rust-Oleum 248657 Rubberized Undercoating Spray 15 oz Black

Rust-Oleum 248657 Rubberized Undercoating Spray 15 oz Black

  • Dries To The Touch In 30 Minutes And Covers Up To 10-12 Sq. Ft. Per Can
  • For Use On Wheel Wells And Automotive Underbodies
  • Undercoating Helps Deaden Sound And Reduce Damage To Parts
  • Perfect For Use On Bare Or Primed Metal Underbodies Of Cars, Trucks, Trailers, Rvs And More
  • Remains Soft

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Sold By Price
litvon
Vittoria Dream

Product Details

Specifications

Details
Dimensions 2.99×2.99×10 inches

Conclusion

When it comes to undercoating classic cars, there are a few things to keep in mind. First, you want to make sure that the product you choose is compatible with the paint and finish of your car. Second, you want to apply the undercoating in a well-ventilated area to avoid inhaling fumes.

Third, you want to follow the directions on the can carefully. Finally, you want to be sure to remove any excess undercoating before it dries to avoid any damage to your car’s finish.

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