DMT Nautic - Reparación de cascos, antifouling y ósmosis en Benalmádena

DMT Nautic is a boat repair and maintenance company based at the Benalmádena Marina that serves the entire province of Málaga and the Costa del Sol, from Estepona to El Candado. It has been repairing and maintaining boats for about 15 years and specializes in the hull: fiberglass, gelcoat, antifouling, osmosis, painting, and polishing. It offers fixed-price estimates following a professional assessment and works on boats both out of the water and afloat at the dock to avoid unnecessary hauling out.

Services

• Antifouling: sanding and application, including on metal parts (shafts, propellers, and sterns).
• Underwater hull stripping.
• Osmosis treatment.
• Fiberglass and gelcoat repair, including hull cracks.
• Polishing of decks and sides.
• Spray painting of decks and hulls.
• Custom fiberglass fabrication: platforms, roofs, and parts.
• Restoration and maintenance of teak decks.
• Preventive maintenance.
• Hull inspections prior to selling the boat.

Service Area

Area	Ports
Western Coast	Estepona, Puerto Banús, Marbella
Central	Fuengirola, Puerto Marina Benalmádena
Málaga City	Muelle Uno, El Candado

The photos on their website show actual work at the Benalmádena dry dock: stripped underwater hull, propellers and sterns prepared for antifouling, and cracks in the hull prior to repair.

Osmosis: How It’s Treated

Osmosis appears as blisters on the underwater hull when water penetrates the gelcoat and reacts with the laminate. Treatment involves stripping the damaged gelcoat, allowing the hull to dry while controlling humidity, repairing the affected areas, and applying an epoxy barrier before the antifouling. The drying process is the longest phase, so it’s usually scheduled during the off-season.

Antifouling on Metals

Shafts, propellers, sterns, and trim tabs require a different treatment than the hull: specific metal preparation and a compatible antifouling coating to prevent galvanic corrosion. Proper treatment of these metal parts prevents the boat from losing speed due to propeller fouling.

Fixed-Price Quote

One of the common problems with boat repairs is bills that keep rising as the work progresses. DMT Nautic first conducts an assessment and then provides a fixed-price quote, so the boat owner knows exactly what they’ll pay before work begins.

Before Selling Your Boat

Inspecting the hull before putting the boat up for sale allows you to repair dents, polish the gelcoat, and renew the antifouling, which improves the buyer’s impression and prevents the survey from uncovering defects that would lower the price.

Preventive Hull Maintenance

Inspecting the hull once a year—even if there are no visible dents—allows for the early detection of cracks in the gelcoat, osmosis blisters, worn anodes, or wear on the antifouling. It is much cheaper to repair these issues early than to wait until water penetrates the laminate. With regular maintenance, the boat retains its value and performs better.

Teak Decks

Teak decking suffers from the southern sun: it turns gray, loses its oil, and the joints come apart. DMT Nautic restores and maintains teak decks to restore their color and watertightness.

Frequently Asked Questions

Where does DMT Nautic operate? It is based at the Benalmádena Marina and serves the entire Costa del Sol, from Estepona to Málaga.

Can they repair the boat without taking it out of the water? Yes, they perform repairs afloat at the dock when the work allows it.

Do they treat osmosis? Yes, they strip the underwater hull and treat osmosis.

Do they restore teak decks? Yes, they restore and maintain teak decks.

Do they provide a fixed-price estimate? Yes, following a professional assessment.