Mold and mildew are more than just unsightly—they can damage your upholstery, spread quickly, and create long-term issues if left untreated.
Whether you’re uncovering your boat after winter or dealing with damp storage conditions, this step-by-step guide will show you exactly how to clean, treat, and prevent mold & mildew buildup using trusted marine-grade products from Whitby Marine Products.
Why Boats Are Prone to Mold & Mildew
The marine environment is a perfect breeding ground for mold spores due to:
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Moisture retention in cushions and canvas
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Poor air circulation during off-season storage
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Warm temperatures and organic matter buildup
Prevention and proper care are key to keeping surfaces clean, healthy, and long-lasting.
What You’ll Need
These products are part of our Mold and Mildew Eradication Bundle and are safe for vinyl, upholstery, canvas, and interior storage areas:
✔ Starke Yacht Care Mold & Mildew Clean – Targets deep-seated stains
✔ Xanigo Marine Mold & Mildew Preventative – Prevents regrowth for up to 90 days
✔ Starke Shield – Reconditions and waterproofs vinyl & fabric
🔹 Step-by-Step Mold & Mildew Removal Process
Step 1: Clean the Affected Area Thoroughly
Spray Starke Mold & Mildew Clean directly onto moldy or stained surfaces. Let sit for 2–3 minutes to break down buildup.
Scrub gently with a soft brush or microfiber towel. Avoid wire brushes which may damage vinyl or seams.
✔ Pro Tip: Use in a well-ventilated area or outdoors when possible.
Step 2: Rinse and Dry Completely
Wipe down the treated area with a damp cloth to remove any residue. Allow the surface to dry completely to avoid trapping moisture.
Step 3: Apply Mold & Mildew Preventative
Once dry, apply Xanigo Marine Mold & Mildew Preventative. This water-based formula creates a breathable barrier that inhibits regrowth for up to 90 days—without yellowing or staining.
✔ Pro Tip: Reapply monthly in high-moisture zones like under-seat compartments, lockers, or below deck.
Step 4: Condition and Waterproof (Optional)
Finish with Starke Shield to restore softness, UV protection, and waterproofing to vinyl, canvas, and fabrics.
This helps extend the life of your surfaces and keeps them protected through the season.
Ideal Surfaces for Treatment
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Boat seats & cushions
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Vinyl trims and covers
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Canvas bimini tops
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Storage compartments
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Cabin ceilings & walls
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Coolers, lockers, and hatches
Prevention Tips for the Season Ahead
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Keep your boat dry and well-ventilated
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Use moisture-absorbing containers during storage
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Clean surfaces before covering for the season
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Apply preventatives every 1–3 months depending on exposure
Shop All-In-One Mold & Mildew Bundles
Our Mold & Mildew Eradication Bundle makes it easy to get everything you need in one click. Available in multiple sizes based on how much surface you need to treat.
Final Thoughts
Removing mold and mildew from your boat doesn’t have to be difficult—and it doesn’t require harsh chemicals either. With marine-safe, high-performance products, you can clean, protect, and enjoy your boat all season long.
Want more expert tips? Check out the Whitby Marine Products Blog for guides on boat restoration, maintenance, and product education.
