Cleaning Inflatable Boats: A Step-by-Step Guide

July 5, 2026 | By Yacht Tender Team

Using the wrong cleaner can permanently damage your inflatable tender's tubes. PVC and Hypalon require different cleaning approaches, and certain common household products can cause irreversible harm. This step-by-step guide ensures you clean safely and effectively.

Understanding Your Tube Material

Before cleaning, identify your tube material. PVC tubes have a smoother, glossier surface and are more susceptible to chemical damage. Hypalon tubes have a matte, rubber-like finish and are more chemically resistant. When in doubt, test any cleaner on a small, inconspicuous area first.

Approved Cleaning Products

For Both Materials

• Mild dish soap (Dawn, Ivory) diluted in fresh water
• Specialized marine inflatable boat cleaners
• 303 Fabric/Vinyl Cleaner for general cleaning
• Soft-bristle brushes and microfiber cloths

PVC-Specific Products

• 303 Aerospace Protectant (for UV protection after cleaning)
• Inflatable boat PVC cleaner (e.g., Star brite, M-Era)
• Isopropyl alcohol for stubborn stains (use sparingly)

Hypalon-Specific Products

• Mild soap and water (Hypalon is very forgiving)
• Bleach solution (10:1 water to bleach ratio for mold removal)
• Acetone for adhesive residue (use very sparingly)

Products to Avoid

• Never use: Abrasive powders (Comet, Ajax)
• Never use: Solvent-based cleaners on PVC (acetone, MEK, toluene)
• Never use: Bleach on PVC (causes discoloration and embrittlement)
• Never use: Pressure washers (can force water into seams)
• Never use: Steel wool or abrasive pads
• Never use: Silicone-based products (prevent future patch adhesion)

Step-by-Step Cleaning Process

Step 1: Rinse

Start by thoroughly rinsing the entire boat with fresh water. This removes loose salt, sand, and debris that could scratch the surface during cleaning. Pay special attention to valves, seams, and corners where salt accumulates.

Step 2: Wash

Prepare a solution of mild dish soap and fresh water. Using a soft-bristle brush, work from top to bottom in small sections. For the hull, use a separate brush to avoid transferring hull grime to the tubes. Rinse each section before the soap dries.

Step 3: Treat Stains

For stubborn stains, apply a specialized cleaner and let it sit for 2-3 minutes. Gently scrub with a soft brush. For bird droppings, sunscreen stains, or fuel marks, use the appropriate material-specific cleaner. Never scrub aggressively.

Step 4: Rinse and Dry

Rinse thoroughly with fresh water until no soap residue remains. Allow the boat to air dry completely before storage. Trapped moisture promotes mold and mildew growth, particularly in folded storage.

Step 5: Apply UV Protectant

Once dry, apply a UV protectant to the tubes. This is especially important for PVC boats. Spray evenly and wipe with a microfiber cloth. Reapply every 30-45 days during active use season.

Cleaning Frequency

• After every saltwater use: Fresh water rinse
• Weekly during active use: Full soap cleaning
• Monthly: Deep clean with specialized products + UV protectant
• End of season: Thorough cleaning before storage

Removing Mold and Mildew

For Hypalon tubes, a 10:1 water-bleach solution effectively removes mold without damaging the material. Apply, let sit for 5 minutes, scrub gently, and rinse thoroughly. For PVC tubes, use a specialized mold remover designed for vinyl materials, as bleach will damage PVC.

Conclusion

Regular cleaning with the right products keeps your tender looking new and extends its useful life. Avoid harsh chemicals, clean frequently, and always apply UV protectant after cleaning. For more care tips, read our maintenance guide and storage guide.