Boat polishing and waxing: bring your gelcoat back to life
Quick answer
Polishing a boat removes the oxidised layer and fine scratches from the gelcoat using a rotary or dual-action polisher and abrasive compounds, followed by wax or sealant for protection. In the Mediterranean, polish once a year and wax twice a season.
Why gelcoat oxidises
Sun, salt and pollution degrade the gelcoat surface: it loses gloss, feels chalky and yellow stains appear on the bow and waterline. Polishing removes that damaged layer; wax creates a barrier that slows it coming back.
Stages of a professional polish
- Washing and degreasing hull and deck.
- Decontamination (rust spots, scale and bow yellowing).
- Cutting with an abrasive compound to remove oxidation and scratches.
- Finishing with a fine polish.
- Protection with wax, polymer sealant or ceramic coating.
To do it yourself, read how to polish and wax a boat.
Combine it with other jobs
Fix small gelcoat dings before polishing, and protect your teak from polishing compounds.
Frequently asked questions
How often should a boat be polished?
Once a year is usually enough in the Mediterranean, with one or two waxes in between. Dark hulls or boats in strong sun may need it more often.
Wax or ceramic coating?
Wax is cheaper and easier but lasts months. Ceramic coatings cost more and need careful prep, but can protect for one to two years.
Polishing & waxing by port
Polishing & waxing: professionals by area
Related guides
How to polish and wax a boat so it shines like new
Wash, cut, polish and protect: four steps to restore gelcoat shine and keep it all season.
How to repair boat gelcoat: chips, scratches and cracks
Step by step to repair chips and scratches in gelcoat, match the colour and know when the damage needs a professional.
How to clean a boat hull: topsides and bottom
Products, technique and frequency for cleaning the hull, removing bow yellowing and keeping the bottom clean between haul-outs.
Other maintenance services
Gelcoat repair
Gelcoat is the pigmented resin layer that protects a boat’s fibreglass. Chips, deep scratches and cracks should be repaired promptly so water cannot reach the laminate. A professional repair opens up the damage, fills it with gelcoat or epoxy filler, sands through the grits and polishes until colour and gloss match.
View serviceBoat cleaning
Professional boat cleaning covers washing deck and hull with marine products, gentle teak cleaning without a pressure washer, rinsing stainless steel and cleaning interiors. The bottom can be cleaned in the water by a diver between haul-outs to keep performance up.
View serviceTeak deck replacement
Replacing a boat teak deck means removing the worn timber, repairing and preparing the substrate, then bonding and caulking new natural or synthetic teak planks. It is usually needed when the wood is thinner than 4–5 mm, plugs keep popping out or water is leaking below. In Spain it typically costs €600–1,200 per m² for natural teak and €250–550 per m² for synthetic teak, depending on the boat and deck complexity.
View service