How to Bend RV Corner Trim

RVs are capable of accommodating most of the stuff you need while traveling, and that’s why RVs are a must-have for enthusiastic travelers and campers. You can think of your RV as your mobile home as the vehicle possess all the amenities you might need while traveling.

However, while out on your outdoor adventures, there is a high probability of encountering rain, which can seep into your RV and result in condensation. This will cause damage to the walls of your RV and cause many other problems. In this article, we offer some tips on how to keep your RV protected and repaired.

What is an RV Corner Trim?

RVs have corner trims that are designed to reduce the risk of rainwater entering the vehicle through its exterior. If this water penetrates the vehicle, it will damage the walls of your vehicle.

Because of this, corner trims are of utmost importance. With its aluminum composition, these trims are made of durable, rustproof material. Although, high winds and rain can negatively affect this material. Trims are usually mounted with screws made of vinyl. The material is highly resistant to any elements present during a heavy downpour. It is, however, recommended to replace it if it becomes loose.

Why Does the Corner Trim on Your RV Go Bad?

Aluminum is a rust-resistant material used for corner trims. Nevertheless, if the trim wears out through rain, hail, or other elements, it will have to be replaced or repaired.

As RVs move along the road, sealants and seams may become weaker, allowing the interior of the vehicle to become exposed to moisture, condensation, wind, and snow. Leaving your RV’s trim unattended will result in leaks. When it rains, water will pool on your roof, causing damage to your car’s interior and walls. By covering your trailer’s walls and ceiling with trim, you can prevent extreme damage from occurring.

What Tools Do You Need to Install RV Corner Trim?

By replacing your RV’s trim, you protect it from leaking and damage caused by the sun. When left unattended, mold in your RV can grow which can result in serious health risks. With just a few tools, however, you can install a new corner trim on your RV.

Here’s a list of what you require for the installation.

Molding made from aluminum
The sealant
The putty knife
Molding made from aluminumt
Mallet made of rubberist
Any rough brush
The sealant

What Are The Steps to Replace and Bend Your RV Corner Trim?

There is a bit of a challenge in this process since the edges are typically fabricated from aluminum, causing the edges to become distorted if not handled correctly. Several areas are pliable and supple compared to others that are hard to bend.

In case you try to bend certain hard spots, crinkles are likely to appear. In this case, there is an option, which is heating the aluminum spots, then bending them afterward, thus creating a perfectly smooth curve.


You will likely find that the old trim is damaged or loose after long and continuous use of the RV. Pull out all loose parts with your fingers from the old trim before you install the new one. For those pieces you can’t get rid of, you can brush them off with a rough brush. Following that, you will be able to remove the screws holding the RV’s corner molding in place.

Take care not to damage the old aluminum molding if you plan on reusing it in the future. If residues remain inside the aluminum molding, use a putty knife to remove them. The RV’s surface should also be cleaned at the installation site. Simply wash the surface with soap and water.


Measure the place where the old aluminum molding will be replaced with the new one. Draw a line to guide your work. Using it as a guide will help you install the new aluminum molding.


Vinyl trims are easy to install since they are flexible. Ensure the trim covers all the cracks drawn earlier and follows the lines drawn. This will ensure it can be installed straight and around corners easily.

The interior of your RV needs more protection in extreme weather conditions or when you are driving in humid weather. The interior of an older RV requires extra protection when it is humid. We recommend that you get a wider trim that measures 1 inch wide in this instance.

A corner trim will automatically follow the contour of your RV without damaging its paintwork. The sticky part allows adhering better to RV corners while sealing cracks.


To ensure that moisture cannot enter your vehicle through cracks or holes, use a waterproof sealant. There is a special formula that resists saltwater damage that you can use if you keep your RV near a beach. Give the aluminum molding a generous coating. Sturdy and corrosion-free, it is an excellent choice for RV trips in harsh weather conditions.


Aluminum is not a brittle material, and as a result, it won’t easily break. Rubber mallets can take care of bending it around corners. The aluminum will also fit accurately around corners with this method.


The screws will come with the moldings. The trim often needs extra screws to ensure it stays in place which ensures excellent waterproofing.

RV and travel trailer owners have to worry about water damage because it can affect their vehicles and belongings. Because of this, you need rust-proof screws, otherwise, the trim will fall off. Whenever you install the old molding, don’t use rusty screws.


Having your RV’s corners replaced will ensure proper sealing. Your RV will suffer water damage if it has cracks and holes that allow water to enter. It is easy to purchase the necessary tools for installing a new RV corner trim without damaging it.


No, you can improvise by using a piece of wood or metal that is slightly larger than the trim itself. Just be sure to reheat the trim frequently so that it stays pliable.

Yes, this method can be used for any type of flexible trim. Just be sure to adjust the amount of heat and the type of mold or jig that you use depending on the material.

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Ever since I was a kid, I've been fascinated by travel. I inherited this passion from my parents. Since my college years and to this day, I have had a passion for traveling in a motorhome. I am here to share my experiences with you.

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