Boat Cleaning Hacks

BETTER BOAT

Boat Cleaning Hacks

20 practical tips, sorted by the part of the boat you're working on.

Before you start: never mix cleaners. Bleach mixed with ammonia releases chloramine gas, and bleach mixed with an acid (vinegar, rust removers, some hull cleaners) releases chlorine gas. Never combine cleaners or apply one over another cleaner's residue. Keep tools and runoff separate. Follow each label's rinsing instructions before changing products, and test on a hidden spot first.

Quick surface guide

Screenshot this part. Your boat builder's and material maker's care instructions come first.

Smooth gelcoat

Routine: rinse, wash with boat soap and a soft brush or mitt, dry, wax on a schedule.

Watch out: grit on the mitt scratches the finish, so rinse loose dirt off first.

Molded non-skid

Routine: wet, apply deck cleaner, scrub with a deck brush, rinse well.

Watch out: never wax it. Foam or painted decks follow their own maker's instructions.

Marine vinyl

Routine: fresh water, gentle soap and a soft rag about once a week; dry, then a protectant your upholstery maker approves.

Watch out: no bleach, harsh household cleaners or stiff brushes unless your seat maker says otherwise.

Canvas

Routine: brush off dirt, hose, mild soap with a soft brush, rinse, air dry.

Watch out: check your fabric maker's guide before using any stain remover.

Stainless

Routine: plenty of fresh water and mild soap to rinse off salt.

Watch out: keep chlorine cleaners off it; they corrode stainless.

Clear vinyl windows

Routine: rinse first, then a clean, soft cloth and the cleaner your window maker approves.

Watch out: no paper towels, household glass cleaner or car wax.

Hull and gelcoat

1Use two buckets

Fill one with soapy water and one with plain water for rinsing the mitt. Dirt stays in the rinse bucket instead of going back onto the hull, where grit can scratch the finish. Hose off loose dirt before the mitt ever touches the boat.

Optional product: Premium Boat Soap Concentrate, a concentrated boat wash for hulls, decks and cushions.

2Match the brush and cleaner to the surface

Discover Boating recommends soft bristles on painted or gelcoated surfaces. Keep a soft brush or a microfiber mitt for the hull and sides. For molded fiberglass non-skid, use the recommended deck brush. Follow separate care instructions for foam decking, painted decks and other coverings.

3Scuff marks: water and an eraser, not a scouring pad

Shoe marks and dock grime usually come off with a wet cleaning eraser. Test first and use light pressure. If the finish changes, don't continue. Restore protection on smooth gelcoat as its manufacturer recommends. Do not wax non-skid.

4Waterline and rust stains: let the cleaner sit

Brown waterline stains, rust streaks and exhaust marks rarely scrub off with soap. A hull cleaner that you apply, leave for the time on the label, then rinse does most of the work. Many hull cleaners are acid based (read the label), so keep them away from bleach products and rinse thoroughly.

5Wax smooth gelcoat at least twice a year

Wash off dirt and debris and let the boat dry completely before you start. Discover Boating's rule of thumb is twice a year at minimum, and it notes most experts suggest every three or four months. If the gelcoat is heavily oxidized, it needs a compound before polish or wax.

Non-skid deck

6Wet the deck, let the cleaner work, then scrub

Non-skid texture holds dirt, so it needs a brush rather than a quick mop. On molded fiberglass non-skid, wet the deck, apply your cleaner, wait the time the label gives, then scrub with the recommended deck brush and rinse well. Foam decking and painted decks need their own maker's cleaning instructions.

Optional product: No Slip Boat Deck Cleaner, a deck cleaner for non-skid and fiberglass. Label directions: wet the deck, apply, let sit 2 to 3 minutes, scrub, rinse.

7Never put regular wax on non-skid

Wax makes the deck slippery, which defeats the point of non-skid. If you want shine or UV protection there, use a product made specifically for non-skid surfaces.

Vinyl seats

8Rinse and wipe weekly instead of scrubbing monthly

Fresh water, a soft rag and gentle soap, about once a week during the season. Discover Boating suggests that weekly routine, with a deeper clean about once a month.

9Keep bleach and stiff brushes off your seats

Discover Boating warns against caustic cleaners (bleach especially) and stiff bristle brushes on boat seats, because they strip the protective treatment and damage the vinyl. Seat material maker Morbern adds that some household cleaners and solvents pull out the ingredients that keep vinyl soft, which leaves it brittle.

Morbern does list a diluted bleach method for specific vinyls sold as bleach cleanable. That applies only to those materials and that method; it does not approve other bleach products for your seats. If a stain needs more than soap, check your seat manufacturer's care guide first.

10Dry it, then add a UV protectant

Let the seat dry completely after cleaning, then apply a vinyl protectant. Use a protectant approved by your upholstery manufacturer. Do not assume it restores the original factory coating.

Optional product: Boat Interior Vinyl Protectant, a UV protectant spray for boat seats and interior vinyl.

11Watch out for blue jeans and ink

White vinyl absorbs dye from fabrics that bleed, and blue denim is the classic example, so throw a towel down before someone sits in new jeans. Ballpoint ink can stain vinyl permanently; Morbern's advice is to wipe it right away rather than letting it sit.

Canvas and covers

12Brush, hose, soft brush, air dry

Sunbrella's routine for marine canvas: brush off loose dirt, hose it down, wash with water and a mild soap using a soft bristle brush, rinse until the soap is gone, and let it air dry.

13Re-treat when water soaks in instead of beading

Repeated cleanings and years of sun wear down how well a fabric sheds water. Sunbrella says you can refresh it with a retreatment product after cleaning. If you use a fabric waterproofing spray, clean and dry the fabric first and confirm compatibility with the fabric's manufacturer. Protect clear windows from spray and runoff.

14Don't force a sticky snap

Yanking a snap that's gritty with salt is how canvas tears. Clean the snap, then rub a little wax lubricant on it and on stiff zippers.

15Mildew stains on canvas: check the fabric first

Sunbrella's care page allows a specific diluted bleach and soap mix for stubborn stains on its fabric. Approval for diluted household bleach does not establish compatibility with any formulated stain remover. Follow the instructions for your exact fabric, coating, stitching and cleaner. Protect nearby hardware and clear windows, and test a hidden spot. Chlorine cleaners corrode stainless snaps and fittings.

Optional product: Mildew Stain Remover removes mildew stains: spray, let it sit, rinse. Heavy set-in stains may need light scrubbing. Use it by itself, on a surface that has been rinsed clean of any other cleaner.

Safety: this one contains bleach. Mildew Stain Remover contains sodium hypochlorite (bleach) and sodium hydroxide. Wear eye protection, protective gloves and protective clothing. Never combine this product with vinegar, ammonia, acids, other cleaners or homemade mixes. Follow the label directions, work in fresh air and rinse the area thoroughly.

Metal and stainless

16Fresh water and mild soap first

Stainless hardware does best with plenty of fresh water and mild soap, which rinse away the salt that holds moisture against the metal. Skip chlorine cleaners on stainless entirely.

Optional product: Marine Metal Polish, a wipe on, wipe off cream polish for chrome and stainless.

17Look before you polish

Polishing away rust stains around a fitting can hide a corrosion problem underneath. Practical Sailor suggests inspecting suspect fittings (dye test kits exist for this) before you shine them up.

Clear vinyl windows

18No paper towels, no household glass cleaner

Avoid paper towels. Rinse away grit, then use a clean, soft cloth approved by the window manufacturer, and switch to a fresh cloth every 5 to 20 square feet. Strataglass specifically rules out Windex, Rain-X and car wax on its panels; use the cleaner your window maker approves.

19Roll warm, stack soft

Practical Sailor's rule: don't roll older vinyl windows below about 60°F, and roll them with soft clean fabric so the vinyl never touches itself. Your panel maker's instructions decide whether panels can be rolled at all. If you stack removed panels, put a bed sheet between each one.

After every trip

20Rinse the salt, then pull out anything wet

After a saltwater run, rinse the whole boat with fresh water, including the trailer brakes if you pulled out on a trailer. Then take wet towels, lines and loose cushions off the boat so they dry instead of sitting in a closed cabin or locker.

Optional product: After removing wet items and drying the boat, an optional moisture absorber such as the Boat Dehumidifier Container can collect excess moisture in enclosed spaces. It does not replace removing wet gear or fixing leaks.

Gear for this job

Wash day

Hull and gelcoat

Decks

Seats and interior

Canvas

Metal

Rinse and dry

Sources and manufacturer instructions

Always follow product labels and your boat and equipment manufacturers' care instructions. Test any cleaner on a hidden spot first. Better Boat