How Do You Put a Seal on a Truck Bed?

Putting a seal on a truck bed is an important step in protecting the metal from rust, corrosion and wear. It also helps ensure that the bed of your truck is waterproof and looks great for years to come. There are several different methods you can use to seal a truck bed, each with its own benefits and drawbacks.


Painting your truck’s bed is one way to protect it from the elements. This method is relatively inexpensive, but it can be time-consuming if you don’t have the right tools or skillset.

Paint will not only protect your truck’s metal from corrosion, but it can also make the bed look great if properly applied. However, paint will not provide any additional waterproofing benefits.

Rubberized Undercoating

Applying a rubberized undercoating to your truck’s bed is another option for sealing it against rust and corrosion. This method provides some additional waterproofing benefits compared to painting because rubberized undercoating has a higher resistance to moisture than paint alone. Applying rubberized undercoating is labor intensive and requires special equipment, so this method may be better suited for professional mechanics or those with advanced automotive knowledge.


Bedliners are one of the most popular methods for sealing a truck bed because they offer both protection from rust and corrosion as well as waterproofing benefits. Bedliners come in various forms such as spray-in liners or drop-in liners which are installed into the bed of your truck like a mat or rug. Both types of liners offer similar protection, but spray-in liners tend to be more durable and provide better coverage compared to drop-in liners.

No matter which method you choose, sealing your truck bed is an important step in keeping it protected from rust, corrosion and wear over time. With proper maintenance and care, your truck should remain in good condition for years to come.


Putting a seal on a truck bed is essential in protecting it from rust, corrosion, and wear over time while also providing some additional waterproofing benefits. There are several different ways you can seal your truck bed including painting, applying rubberized undercoating or installing a bedliner depending on what best suits your needs and budget. With proper care and maintenance, your sealed truck bed should remain looking great for years to come!

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Karen Watkins