Painting a RV exterior
Painting a RV exterior
DIY Tutorials

How to Reseal an RV Exterior

RV Exterior
Skill Level

RV water damage is a costly problem and one that will cause tons of unseen damage. Prevent water damage from occurring by resealing your RV’s exterior. In this guide, we will explain how to reseal an RV exterior.

Sealing RV seams is important because water damage often happens at the corners where RV walls are joined together. Although RV walls leave the factory with sealant already applied to the seams, over time UV light and weather breaks the sealant down. This creates gaps in the corners which allow moisture to get inside.

Should You Use Silicone on the Exterior of your RV?

Never use silicone on the exterior of your RV! Here are 4 reasons why you shouldn’t:

  1. Silicone doesn’t stick to itself, so when it needs to be repaired, you need to remove all the silicone before you can start resealing the seams.
  2. It’s extremely difficult to remove.
  3. Silicone doesn’t have good adhesion on smooth surfaces and is prone to peeling.
  4. Over time, silicone drys to a hard finish and cracks.

How Often Should you Reseal your RV Exterior?

Inspecting your RV’s external seams should be done regularly to catch cracks, gaps, and separation before prolonged water damage can occur.

When you’re inspecting your RV’s roof at the start and end of the season, make it a habit to check all the vertical and horizontal seams in places like:

  • Around the windows
  • The seams of your slide-outs
  • Corner joints of the walls
  • Anywhere there is an RV appliance or internal compartment

And if you aren’t already, keep in mind that you should be resealing your RV roof (or replacing it) around the 10-year mark.

Now that we’ve established how often you should be inspecting your RV seals, here is how to reseal your RV exterior.

Instructions to reseal your RV exterior’s seams

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