Boat maintenance: services and guides

Everything your boat needs to stay in shape: teak deck replacement, antifouling, gelcoat, polishing, engine and cleaning. Find vetted professionals in Valencia, the Balearic Islands, Barcelona, Alicante and Malaga, and learn with our practical guides.

Maintenance services

Teak 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.

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Antifouling & haul-out

Antifouling is the paint applied below the waterline to stop algae, barnacles and other organisms sticking to the hull. In the Mediterranean it is usually renewed once a year during haul-out, when the bottom is also cleaned and anodes, propeller and through-hulls are checked.

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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.

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Polishing & waxing

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.

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Engine service

Basic boat engine maintenance means changing oil and filters every 100–200 hours or once a year, replacing the raw-water pump impeller every 1–2 years, checking anodes, belts and coolant, and inspecting the fuel system. Doing it before the season prevents most breakdowns at sea.

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Boat 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.

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Winterisation & end of season

Winterisation is the service done at the end of the season so the boat survives the winter without damage: oil and filter change, fuel stabiliser and a full tank, cooling-system protection, batteries charged or disconnected, deep cleaning, interior ventilation and checks on hull, teak and mooring lines. It is usually done in October or November.

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Boat inspection (ITB)

The ITB (Inspección Técnica de Buques) is Spain’s mandatory technical inspection for recreational boats, often called the "boat MOT". It is carried out by authorised inspection bodies and checks hull, engine, electrics, safety equipment and paperwork. Frequency depends on boat type, length and age, so check current regulations for your boat.

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Marine electrician

A marine electrician diagnoses and repairs a boat’s electrical system (12/24 V and 230 V): batteries and chargers, alternators, switchboards and protection, lighting, pumps, windlass and electronics. The most common faults are flat batteries, corroded connections, faulty chargers and phantom loads. Have the system checked every season and before adding batteries or installing lithium or solar.

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Professional skipper

A professional skipper is a licensed mariner who runs your boat when you can’t or don’t want to: day trips, deliveries between ports, handovers after a purchase, hands-on training or crewed charter. They are hired per day or per passage, and the owner usually covers fuel, berthing and food during a delivery.

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Boat maintenance by port

Maintenance guides

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