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.
IMPORTANT: Never use silicone on the exterior of your RV for these reasons:
- It does not stick to itself, so when it needs to be repaired, you need to remove all the silicone.
- It’s extremely difficult to remove!
- It doesn’t have good adhesion on smooth surfaces and is prone to peeling.
- Over time it drys to a hard finish and cracks.
Look for any seams that are cracked or have gaps.
Clean the area with acetone to make sure all residue and debris are removed.
Tape off both sides of the seam that you’ll be resealing. This allows for a clean edge.
Let the sealant dry for 24 hrs and then remove the painter’s tape.