RV caulks and sealants seal joints, fill gaps, and create waterproof barriers throughout your rig. Proper sealing prevents water intrusion—the leading cause of RV structural damage. Different applications call for different sealant types: Self-leveling products for roof penetrations, lap sealants for vertical surfaces, adhesive caulks for trim and moldings, and specialty formulas for specific materials.

What to Know Before You Buy

• Match the sealant to your roof type—EPDM, TPO, fiberglass, and aluminum each require compatible products.
• Self-leveling sealants flow to fill gaps on horizontal surfaces; lap sealants (non-sag) hold their shape on vertical applications.
• Silicone sealants resist weather but don't accept paint; polyurethane sealants are paintable but require more surface prep.
• Always apply sealant to clean, dry surfaces for maximum adhesion and longevity.

Tackling a sealing project and unsure which product fits your situation? Describe the application and we'll recommend the right caulk or sealant.

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