Buying Guide: Best Car Undercoating Spray (2017 – 2018)

car underbody

Undercoating your car can help remedy and prevent a number of issues that are common in cars. The underbelly of your car is the most vulnerable area as it is exposed to rocks, dirt, road debris, things you run over, salt and more. Taking the time to protect this area of your car can make a huge difference in the overall wear and tear of your car in the long run.

#1 Top Rated Car Undercoating Spray (Editor Selection) — Click Here!

Keep reading for our editor selections on the best car undercoating spray for the money

Our Car Undercoating Spray Ratings At-A-Glance

undercoating spray ratings

Top 10 Car Undercoating Sprays Reviewed 2017 - 2018

Here you'll find our list of the best car undercoating sprays for the money based on our team's ratings of the products. If you want to read reviews or get more product information, just scroll down the page or click on the links.
PRODUCTOUR RATING
3M 03584 Professional Grade Rubberized Undercoating
3M 03584 Professional Grade Rubberized Undercoating
(9.1 / 10)
CRC 18412 Zinc-It Instant Cold Gallonvanize Zinc Rich Gallonvanize Coating
CRC 18412 Zinc-It Instant Cold Gallonvanize Zinc Rich Gallonvanize Coating
(9.1 / 10)
Rust-Oleum Automotive 254864 32-Ounce Professional Undercoating
Rust-Oleum Automotive 254864 32-Ounce Professional Undercoating
(8.9 / 10)
Magnet Paint Co UCP970-01 Chassis Saver Antique Satin Black
Magnet Paint Co UCP970-01 Chassis Saver Antique Satin Black
(10 / 10)
Dynatron 544 Dyna-Pro Paintable Rubberized Undercoating
Dynatron 544 Dyna-Pro Paintable Rubberized Undercoating
(10 / 10)
Rusfre Automotive Spray-on Rubberized Undercoating Material
Rusfre Automotive Spray-on Rubberized Undercoating Material
(8.9 / 10)
Tite Seal T1617R Tite-Seal Rubberized Auto Body Undercoating
Tite Seal T1617R Tite-Seal Rubberized Auto Body Undercoating
(8.8 / 10)
Permatex 81833 Heavy Duty Rubberized Undercoating
Permatex 81833 Heavy Duty Rubberized Undercoating
(8.3 / 10)
Penray 4424 Rubberized Undercoat
Penray 4424 Rubberized Undercoat
(10 / 10)
Tite Seal T1617R-12PK Rubberized Auto Body Undercoating
Tite Seal T1617R-12PK Rubberized Auto Body Undercoating
(8.7 / 10)

What To Consider Before Buying

When it comes to choosing the right coating product there are three things you should think about and they are as follows.

  1. Thickness- the first factor is how thick the coating is when it is applied properly. Most at home coating solutions are going to suggest that you coat the underside of your car at least twice to make sure it is fully coated and protected. You do not want a coating product that is going to be too thick as this can damage the underside of your car and make repair and maintenance difficult. You also do not want a product that is too thin as this will not protect your car from things like rust and damage due to snow and road salt as well as other debris that your car comes in contact with. You want something of medium thickness to insure it is going to properly protect your car.
  2. Consistency- you want a coating product that dries hard enough that it is really going to protect your car. Something that is too pliable is going to give when debris and rocks hit it which is not going to protect your car. You also want something that is still somewhat pliable so that if your car needs repairs your technician can still get to the moving parts he or she needs to access. Aerosol sprays are the easiest to use when undercoating a car as are those that can be pushed through a spray gun or used with an air compressor.
  3. Ease of application- this process is not going to be simple by any means so you need to make sure you look at the drying time, how it has to be applied, and what steps you need to take to make sure it is applied correctly. If you are unsure, you can always talk with a professional to learn how to use these products and which ones are right for your particular needs. Ease of application can also mean how they are applied. Those that are applied with the use of an aerosol are going to be easier to use than something that has be brushed on. This will also affect how much product you need and how well it covers the bottom of your car.

If you are unsure how to do this at home you can always take your car to a professional shop to have it done. The process helps protect your car from damage and can help insure that road damage does not affect the undercarriage of your car. This type of coating is best used in areas where road salt is commonly used and when you are going to be going off road or through an area where rocks and other debris in the road are common.

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