How much does it cost to undercoat a truck?

Rust is a vehicle eater. Therefore, to keep your vehicle in good shape, you need to coat it regularly. Undercoating and maintenance are especially essential for vehicles that are used regularly and are driven on rough terrain. Smooth roads do not do much harm, however, roads with bumps and rough terrain will badly affect your vehicle, especially if you drive on such paths on regular basis.

A truck is one such vehicle that is driven on rough land regularly. Furthermore, it is usually used to carry bulky stuff which further adds to the need for regular maintenance. In this article, we will discuss the cost, ways, and need to maintain your truck. So let us dive into it.

Source: LINE-X

Cost of undercoating a truck:

The total cost of undercoating a truck frame depends on several factors. Generally, it can cost you around $1000.

Factors affecting the cost of undercoating:

Several factors affect the cost of undercoating your vehicle. These include:

  • Type of coat needed.
  • Dealer chosen.
  • The package provided by the dealer.
  • Age of vehicle.
  • Model of vehicle.
  • Type of vehicle.

Types of undercoating materials:

Rubberized undercoating:

Apart from quick-drying, it is clean and easy to apply. After drying, it leaves a rubber-like texture. It will provide your vehicle protection from moisture, rust, dings, and dents.

Asphalt-based undercoating:

This is one of the best options for undercoating trucks. The fact this it is unpaintable makes it suitable only for undercarriages. However, manufacturers add bits of rubber-like material to it which give it the properties of corrosion resistance and help in noise reduction.

Polyurethane undercoating:

This undercoating is effective in sealing cracks and seams. It protects unoxidized metal from rusting by displacing moisture and salt. It has the advantage of easy application by loading into an application gun. However, the surface needs prepping before application. This includes; degreasing and application of an etching primer to the bare metal surface.

Wax or paraffin-based undercoating:

The wax or paraffin-based undercoats have an easy application but they are not very durable and require re-application within a few months due to the inability of wax to stick to metal. It also protects against moisture due to its ability to seep quickly into cracks and seams.

Some undercoating options:

There is a multitude of undercoating types. You can choose any depending on the type of undercoat needed by your vehicle and your budget. Some of these types are:

Dynatron 544 Dyna – Pro:

It gives a flexible rubberized coating that is resistant to weathering, salt spray, chipping, and dust. It is also paintable and texturized. It is in the form of a spray. Price varies by the size of the pail.

Penray 4424 Rubberized Undercoat:

It is also a rubberized coating having the advantage of quick drying. Furthermore, it is available in black color. It can be used for coating undercarriage, frame, and wheel wells which will help in reduction in road noise. It can also be painted over with NO Bleed – Through. However, it is extremely flammable.

3M 03584 professional-grade rubberized undercoating:

It will give your vehicle a black coating protecting it from corrosion and also helps in buffering noise. The no-run formula makes its application clean and easy. It can cost around $15.

Fluid film:

It is an anti-corrosion and anti-rust lubricant. Being solvent-free, it will not dry out and so is long-lasting. Being based on lanolin makes it environmentally friendly and clean. The presence of an anti-freezing agent makes it good for snowblower chutes.

Rust-Oleum 248656 Automotive Professional Rubberized Undercoating:

It is an aerosolized mist available in black color which helps in deadening road noise. It provides corrosion protection from water, salt, and other chemicals. A 15 oz can cost around $25.

Source: NH Oil Undercoating

Points to consider when buying vehicle undercoating material:

There are several points to keep in mind and consider when choosing the undercoating material for your vehicle. These are:

The volume required:

This is determined by the size of your vehicle. The volume required determines the number of pails of the undercoating material required. You can ask your mechanic to guide you accordingly.

Shelf life of the undercoating:

You need to consider the shelf life of the product if you buy more than needed. Some start to wear off a few months after the opening while others may take only a few weeks. Therefore, consider the shelf life if you need to undercoat your vehicle several times during the year.

Formulation of the undercoat:

This solely depends on your budget. However, the formulation you choose will also determine the need for the re-application of undercoats. Using a good one with a long time of re-application will save you a large amount in the long run.

Good functionality:

When choosing the undercoating, make sure that it is corrosion and noise resistant. It should also be made sure that it dries quickly and enhances the look of the surface being coated.

Filling power:

The filling power is the ability of the undercoat to fill cracks and holes and smoothen the irregular surfaces. This will make painting over it easier and give a good appeal to the vehicle.

Pros of undercoating your vehicle:

There are several advantages of undercoating your vehicle . Some of these are:

  • It will protect against rust, corrosion, and abrasion.
  • It enhances the aesthetic appeal of the vehicle.
  • Undercoating your vehicle extends its life.
  • Application is easy, and only damaged areas can be coated too.
  • With a little knowledge, self-application can be done.
  • All the costs might be borne by your insurance package.
  • It helps with the reduction of road and internal noise.
  • You can choose from a multitude of methods as per your likening and budget.

Cons of undercoating your vehicle:

  • It is best for new cars.
  • It will not be very effective if corrosion is already present.
  • Hiring a third party to undercoat your vehicle might badly affect the vehicle’s warranty.
  • Excessive coats will add weight to the vehicle.
  • It is not a permanent solution to damage. Corrosion will happen but it might be slow.
  • Reapplication might be essential after a few months of the first cost.


Undercoating your vehicle as soon as you buy it will help it protect from corrosion and damage. If you choose a good undercoating material, it will go a long way and re-application might also be needed after years. Here is a video depicting the truck undercoating process: