How to Clean a Paddleboard: Proven Easy Steps 2026

By Marcus Chen · September 28, 2025

Why I Obsess Over Paddleboard Maintenance

I've been paddling for eight years. I own a 10'6" BOTE Rover and an 11' Starboard Touring board. Salt kills seams. I learned this the hard way after leaving my first inflatable SUP crusted with ocean spray for three weeks. The PVC degraded, the glue failed, and I watched my $800 investment slowly deflate on my driveway. Now, I treat cleaning like a religion. If you want your gear to last more than a single season, you have to wash it properly.

I'll walk you through my exact routine. This isn't just a quick rinse. It's a systematic approach to protecting your gear from UV damage, mold, and abrasive sand. Whether you paddle in the ocean or a murky local lake, these steps will keep your board performing perfectly.

The Gear You Actually Need

You don't need a garage full of expensive chemicals. I've tested dozens of products, and most are just overpriced water. Here is the exact kit I keep in my truck for every trip.

Product	Price Range	Why I Use It
Star brite Sea Safe	$15-25	Biodegradable wash that won't strip factory UV coatings.
303 Aerospace Protectant	$20-30	Blocks UV rays on rails and hulls better than anything else.
Zote Soap	$3-5	A pink bar soap perfect for spot-cleaning tree sap and grease.
Soft Bristle Brush	$10-15	A long-handled car wash brush saves my back from bending.
Microfiber Towels	$15 (pack)	Prevents lint and avoids scratching glossy epoxy finishes.

I use a collapsible 5-gallon silicone bucket because it folds flat and fits right under the seat of my truck. For the hose nozzle, I use a Dramm One-Touch shut-off valve. It stops the water flow instantly without walking back to the spigot.

Step-by-Step: How to Clean a Paddleboard After Saltwater Use

Saltwater is incredibly corrosive. It dries into sharp crystals that grind against the deck pad and fin boxes. After a long summer day on the bay, I follow this exact 15-minute process to prevent long-term damage.

First, I rinse the board with lukewarm fresh water. Keep the temperature around 75°F. Hot water can actually soften the PVC glue on inflatables or warp the epoxy on hard boards. I use a standard garden hose with a gentle shower nozzle. Never use a high-pressure washer. I've seen people blow holes right through their drop-stitch chambers with a pressure washer.

Next, I mix two ounces of Star brite Sea Safe into my bucket of water. I dip my soft bristle brush into the suds and scrub the deck pad in circular motions. Pay close attention to the bungee tie-downs. Salt loves to hide in those tight elastic loops. I use a small detailing brush to get inside the D-rings.

Finally, I rinse the suds off completely. I check the fin boxes one last time to ensure no sand is trapped in the screw mechanisms. Sand in the fin box will strip the threads right off your fin screws, leaving you stranded on the water.

Step-by-Step: How to Clean a Paddleboard After Freshwater Use

Freshwater seems harmless, but it has its own set of problems. If you paddle in murky lakes with heavy algae blooms, you'll need a slightly more aggressive approach to keep the deck pad from getting slippery. Zebra mussels and lake scum are the real enemies here.

I start by hosing off the hull. I flip the board over and inspect the bottom for any hitchhiking aquatic invasive species. It's illegal to transport zebra mussels in most states, so I scrape off any suspicious bumps with a plastic putty knife. Never use a metal scraper on an inflatable board.

For the deck pad, I use a mixture of white vinegar and water. I spray it directly onto the EVA foam and let it sit for 5 minutes. The mild acidity breaks down the lake scum without damaging the foam. I scrub it lightly and rinse. If you have kids who track mud everywhere onto the deck pad, you'll need a stiffer brush. I use a medium-stiff nylon brush for mud, but I never scrub too hard. You can easily tear the EVA foam if you get too aggressive.

Deep Cleaning the Deck Pad and Fin Boxes

The deck pad takes the most abuse. It absorbs sunscreen, bug spray, and sweat. Over time, it gets a grimy, slick feeling. When your landlord inspects next week and you need to store the board in the garage, you want it smelling fresh, not like a locker room.

I deep clean the deck pad once a month. I sprinkle baking soda over the entire surface and spray it lightly with water to form a paste. I let it sit for 20 minutes. The baking soda pulls the oils and odors out of the foam pores. I scrub it with a soft brush and rinse it thoroughly.

The fin boxes require a different touch. I take an old toothbrush and scrub inside the tracks. I rinse it out with a gentle stream of water. Once it's dry, I apply a tiny drop of marine-grade silicone grease to the fin screws. This prevents them from seizing up and rusting over the winter.

Dealing with Stubborn Stains, Algae, and Mold

Sometimes, basic soap just won't cut it. I'll be honest, this takes elbow grease. If you leave your board rolled up while it's still damp, black mold will bloom inside the chambers and on the deck pad.

For black mold, I use RMR-86 Instant Mold and Mildew Stain Remover. I spray it directly on the affected areas and let it sit for exactly 15 seconds. You must rinse the board thoroughly with fresh water afterward to neutralize the harsh chemicals. This isn't the cheapest option at around $20 a bottle, but it saves ruined boards.

For tree sap, I rub a little bit of Goo Gone on a microfiber cloth and dab the spot. I never pour Goo Gone directly on the board. It can degrade the PVC if left on too long. I wipe it off immediately and wash the area with soapy water to remove the oily residue.

Don't Forget to Clean Your Paddle

People obsess over the board and completely ignore the paddle. I've seen carbon fiber shafts snap because salt crystallized in the adjustable clamp. My adjustable carbon paddle cost me $250, and I refuse to buy another one because of lazy maintenance.

I disassemble the three-piece paddle after every saltwater trip. I rinse the inside of the shaft and the clamp mechanism. I use a Q-tip to clean out the tiny pinholes in the adjustment lock. If sand gets in there, the paddle will slip while you're taking a hard stroke.

For the blade, I just wipe it down with a soapy sponge. If you have a wooden paddle, you need to re-oil it once a year with marine-grade tung oil. I sand it lightly with 400-grit sandpaper and rub the oil in with a rag. It takes about 30 minutes, but it keeps the wood from drying out and cracking in the sun.

Fixing Dings on Hard Boards Before Storage

If you paddle a hard epoxy board, you will eventually hit a rock. I put a nasty gouge in my Starboard Touring board last spring. It exposed the foam core, which acts like a sponge if left untreated. I keep a tube of Solarez UV-curing epoxy resin in my truck. It costs about $15 and cures in exactly 3 minutes under direct sunlight.

I clean the ding with rubbing alcohol and let it dry. I squeeze the resin into the crack and cover it with a piece of clear plastic wrap to smooth it out. I set it in the sun for 5 minutes. Once it hardens, I sand it flush with 220-grit sandpaper. It's a temporary fix, but it keeps water out until I can do a proper fiberglass patch at home.

Storing Your Board the Right Way

Cleaning is only half the battle. How you store the board dictates how long it survives. UV rays will turn a bright yellow board into a chalky, brittle mess in one season.

I always apply 303 Aerospace Protectant to the rails and hull before long-term storage. I spray it on a cloth and wipe it in. Never spray it directly on the deck pad, or you'll slip and fall the next time you paddle.

I recommend deflating your inflatable SUP to about 5 PSI if you plan to store it in an unheated garage or shed during freezing winter months. Fully inflating it in cold temperatures causes the air to contract, which can warp the seams. Keep it loosely rolled in a breathable cotton bag away from direct sunlight and rodents. Mice love chewing on PVC valves.

If you have a hard epoxy board, never store it flat on the ground. The weight will cause the nose and tail to curl up over time. I use a freestanding rack from Suspenz that holds the board on its side. It cost me about $80, but it keeps the hull perfectly straight.

Frequently Asked Questions

How often should I wash my paddleboard?
You should rinse your board with fresh water after every single outing to prevent salt or algae buildup. A full deep clean with soap is only necessary once a month or if you notice stubborn stains. Skipping the quick rinse will drastically shorten the lifespan of your board's seams.

Can I use dish soap like Dawn to clean my SUP?
I strongly advise against using harsh dish soaps like Dawn because they strip the UV protectants right off the PVC or epoxy surface. Stick to marine-specific cleaners like Star brite Sea Safe or a mild castile soap. Dish soap will leave your deck pad slippery and degrade the materials over time.

What is the best way to dry a paddleboard before rolling it up?
I always use a microfiber mop or a large chamois cloth to wipe down the deck and rails before letting it air dry in the shade for about 20 minutes. Never roll up a damp inflatable board, as trapped moisture guarantees black mold growth inside the drop-stitch chambers. If you're in a rush, a leaf blower on a cool setting works wonders to force water out of the crevices.

How do I remove black mold from my inflatable paddleboard?
I spray RMR-86 Instant Mold and Mildew Stain Remover directly on the affected areas and let it sit for exactly 15 seconds before wiping it away. You must rinse the board thoroughly with fresh water afterward to neutralize the harsh chemicals. This isn't the cheapest option at around $20 a bottle, but it saves ruined boards.

Should I deflate my paddleboard for winter storage?
I recommend deflating your inflatable SUP to about 5 PSI if you plan to store it in an unheated garage or shed during freezing winter months. Fully inflating it in cold temperatures causes the air to contract, which can warp the seams and damage the drop-stitch core. Keep it loosely rolled in a breathable cotton bag away from direct sunlight and rodents.