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RV Facts - Seals and Roof
Maintaining the roof and seals of your Recreational Vehicle (RV) is one of the most critical aspects of RV ownership. Leaks can lead to significant damage, including rot, mold, and costly repairs. Regular inspection and maintenance are essential for extending the life of your RV.
Types of RV Roofs
RV roofs are typically made from one of the following materials:
- EPDM (Ethylene Propylene Diene Monomer): A durable, synthetic rubber membrane. It is popular for its longevity and ease of repair.
- TPO (Thermoplastic Polyolefin): A single-ply membrane that offers good UV resistance and a longer lifespan than EPDM. It is generally smoother than EPDM.
- Fiberglass: Similar to the material used on boats, fiberglass is very durable but can crack or develop gel coat issues over time.
- Aluminum: Found mostly on older or high-end RVs. Very durable but seams and fasteners are common leak points.
Seals, or caulking, are the primary barrier between your RV's interior and the elements. They are used around every penetration point and seam on the roof and sides of the RV, including:
- Skylights
- Vents (plumbing, appliance)
- Antennas and solar panels
- Air conditioning units
- Roof-to-side trim and gutters
These seals degrade over time due to UV exposure, temperature fluctuations, and movement during travel. Once the seal cracks, water can penetrate the roof structure.
Routine Inspection and MaintenanceA proactive approach to maintenance will prevent most major leaks. It is recommended to inspect the roof at least twice a year and after any severe weather events.
Task | Frequency | Detail |
|---|---|---|
Full Roof Inspection | Every 6 months | Look for cracks, peeling, or voids in all caulking and seals. Check the membrane for tears or bubbling. |
Cleaning | Every 3 months | Use an RV-specific, non-abrasive cleaner. Avoid petroleum-based solvents which can damage rubber roofs. |
Seal Replacement/Touch-up | As needed (typically annually) | Remove loose caulk and apply new self-leveling sealant around penetrations. Use non-sag sealant for vertical areas. |
Material-Specific Treatment | Annually | Apply UV protectant or specialized roof coatings depending on the roof type (EPDM, TPO, etc.). |
For details on the next scheduled roof maintenance, please refer to the maintenance log: File
Best Practices for SealingWhen repairing or replacing seals, always use the correct type of sealant compatible with your RV's roof material.
- Self-Leveling Sealant: Ideal for horizontal applications (on the roof surface), as it flows to create a smooth, watertight seal around objects like vents and skylights.
- Non-Sag/Lap Sealant: Used for vertical seams, such as the transition where the roof meets the sidewall.
Important Note: Never walk on your RV roof without understanding the proper weight distribution and support points. Always consult the owner's manual or have a certified technician perform complex repairs. If you have questions about the correct sealant to use, contact Person at the service center.
