Sunrise Marine
To clean a non-skid boat deck, wet the surface, scrub with a stiff nylon brush and a boat-safe deck cleaner, then rinse well. Work in small sections so the cleaner does not dry. Repeat on stained spots until the texture looks clean.
This guide walks you through each step. It also covers what to avoid and when to call a pro.
What Is Non-Skid?
Non-skid is the textured surface on a boat deck that gives your feet grip when wet. It is molded into the fiberglass or added as a coating. The raised pattern can look like small bumps, diamonds, or a rough grit.
That texture is what keeps you steady on a wet deck. It also traps dirt, so it needs a different cleaning method than smooth gelcoat.
Why Non-Skid Gets Dirty So Fast
The small grooves hold onto whatever lands on them. Sunscreen, fish blood, bait, algae, mildew, and salt all settle in. A cloth or sponge cannot reach the bottom of the pattern.
Warm, humid weather helps mildew and algae grow. Salt spray adds a gritty film on top. Over time the deck turns gray or yellow and feels sticky.
What You Need
- A hose with fresh water
- A stiff nylon-bristle deck brush with a long handle
- A boat-safe deck cleaner made for non-skid
- A bucket
- A soft brush for edges and corners
- Gloves and eye protection
Read the cleaner label before you start. Test it on a small hidden spot first.
How to Clean Non-Skid Step by Step
1. Clear and rinse the deck
Remove cushions, gear, and loose items. Rinse the whole deck with fresh water. This washes off salt and loose grit before you scrub.
2. Apply the cleaner
Mix the cleaner as the label says. Pour or spray it on a small section, about a few feet wide. Let it sit for the time listed on the label.
3. Scrub the texture
Use the stiff nylon brush. Scrub in one direction, then across, then diagonally. This reaches all sides of each bump and groove.
Use the soft brush near hatches, rails, and trim. Keep your strokes even and steady.
4. Rinse right away
Rinse the section with plenty of fresh water. Do not let cleaner dry on the deck. Dried cleaner can leave streaks and a film.
5. Repeat and check
Move to the next section and repeat. When you finish, look at the deck in sunlight. Re-scrub any spots that still look gray or stained.
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How to Handle Tough Stains
Some stains need extra help. Rust, oil, and old fish blood can soak deep into the pattern.
- Mildew and algae: Let the cleaner sit a little longer, then scrub again.
- Rust: Use a rust remover that the label says is safe for fiberglass.
- Oil and grease: Use a degreaser made for boats, then rinse well.
Never mix cleaners. Some mixes give off harmful fumes. Avoid bleach unless the label says it is safe for your deck, since harsh products can fade color and damage nearby vinyl and stitching.
What to Avoid
- Wax and polish: They fill the texture and make the deck slippery.
- High pressure: A strong spray can wear down the pattern, especially up close.
- Wire brushes: They can scratch and tear the surface.
- Strong acids: They can harm gelcoat and metal fittings.
If you use a pressure washer, choose a wide tip and keep it well back from the deck.
How Often Should You Clean Non-Skid?
Rinse the deck with fresh water after each trip. This clears salt before it builds up. Give it a full scrub about once a month, or sooner if you see dirt or slick spots.
Boats that sit in the water year-round often need scrubs more often. Tampa Bay sun, salt, and humidity all add up.
When to Call a Pro
Some jobs take more time and the right tools. Call a pro if stains will not lift or the texture looks worn flat. A pro can also help if the deck is large or hard to reach.
Look at the smooth gelcoat next to your non-skid too. If it looks chalky or dull, that is oxidation. Our oxidation removal service works on those smooth surfaces around your deck.
For a full clean inside the boat, see our deep boat cleaning. Pricing varies by boat size and condition.
We are a mobile crew. We come to your dock or slip, so you do not have to haul the boat. We also serve owners for boat detailing in Tampa.
FAQ
Can I use a pressure washer on non-skid?
You can, but use low pressure and a wide tip. Stay well back from the surface. Too much pressure can wear down the texture. A hose and brush are safer.
Can I put wax on a non-skid deck?
No. Wax fills the texture and makes the deck slippery. Keep wax and polish on the smooth gelcoat only.
What is the best brush for non-skid?
A stiff nylon-bristle deck brush works well. It reaches into the grooves without scratching. Use a softer brush for trim and edges.
Why does my non-skid look gray?
Dirt, mildew, algae, and salt build up in the grooves over time. A good scrub with a boat-safe cleaner usually brings back the color. Worn texture may need a pro to check it.
Does the deck need to be dry before I clean it?
No. Wet the deck first with fresh water. This helps the cleaner spread and rinses off loose grit.
Get Help With Your Deck
Sunrise Marine Detailing is a mobile crew based in St. Petersburg. We serve boat owners across Pinellas County and the Tampa Bay coast. Contact us for a quote.