technical information to paint aluminium boat


	Antifouling & underwater paint


	Enamel, Varnish, Nonskid paint

Painting guide

Fiberglass boat

Aluminium boat

Wooden boat

Steel boat

Aluminium boat
How to calculate the underwater surface

	TOTAL SURFACE in m²
SAILING BOAT	[ (beam + draught) x load waterline] x 0.75
POWER BOAT	(beam + draught) x load waterline

Protect an aluminium boat below the waterline

	High performance polyurethane protective system	High performance epoxy protective system
Preparation	Mechanical (sand) or Chemical with Scouring Acid Wash and degrease with SD	Mechanical (sand P40) or Chemical with Scouring Acid Wash and degrease with SD
Adhesion primer	Acralu (15m²/l - 1 coat - Thinner: DP )	Acralu (15m²/l - 1 coat - Thinner: DP)
Protective primer	PA (14m²/l - 1 coat - Thinner: DP)	PE (12m²/l - 1 coat - Thinner: DP ) or HPE (8m²/l - 1 coat - Thinner: DP )
Filler is needed	Fair with epoxy filler WATERTIGHT	Fair with epoxy filler WATERTIGHT
Protective primer if nedeed	PA (14m²/l - 3-4 coats - Thinner: DP)	PE (12m²/l - 2 or 3 coats - Thinner: DP ) or HPE (8m²/l - 2 or 3 coats - Thinner: DP)
Antifouling	A1 - A2 (2 coats - Diluant DA )	A1 - A2 (2 coats - Diluant DA )

Stripping antifouling

Preparation	Clean and sand the antifouling with P80 just whan the boat is our of water
Stripper	AS (3-4m²/l - 1 thick coat )
Cleaning	SD and sand with P180

Note: Nautix AS strips also one pot paints and Neutix Grip non skid.

Painting prop

	Bare bronze	Bare aluminium
Preparation	Sand (P180) Wash and degrease with SD	Sand (P180) Wash and degrease with SD
Adhesion primer	Acralu (15m²/l - 1 coat - Thinner: DP )	Acralu (15m²/l - 1 coat - Thinner: DP )
Protective primer	P7 (1/2h later: 2 coats - Thinner: DP )	PA (1/2h later: 3 coats - Thinner: DP)
Antifouling	A7T.Speed (4 coats - Thinner: DA)	A7T.Speed (4 coats - Thinner: DA)

Painting aluminium above the waterline

	High performance polyurethane protective system	High performance epoxy protective system
Preparation	Mechanical (sand) or Chemical with Scouring Acid Wash and degrease with SD	Mechanical (sand) or Chemical with Scouring Acid Wash and degrease with SD
Adhesion primer	Acralu (15m²/l - 1 coat - Thinner: DP )	Acralu (15m²/l - 1 coat - Thinner: DP )
Protective primer	PA (14m²/l - 3-4 coats - Thinner: DP)	PE (12m²/l - 1 coat - Thinner: DP ) or HPE (8m²/l - 1 coat - Thinner: DP )
Filler is needed	WATERTIGHT Fast drying epoxy filler	WATERTIGHT Fast drying epoxy filler
Undercoat	U3 (14m²/l - 1 or 2 coats - Thinner: WS)	U2 (12 m²/l - 1 or 2 coats -Thinner: DP)
Finishing enamel	STARLAC (14m²/l - 2 coats - Thinner: WS )	L2 (12m²/l - 2 coats - Thinner: DP)

Painting a deck of aluminium boat

	High performance polyurethane protective system	High performance epoxy protective system
Preparation	Mechanical (sand) or Chemical with Scouring Acid Wash and degrease with SD	Mechanical (sand) or Chemical with Scouring Acid Wash and degrease with SD
Adhesion primer	Acralu (15m²/l - 1 coat - Thinner: DP )	Acralu (15m²/l - 1 coat - Thinner: DP )
Protective primer	PA (14m²/l - 3-4 coats - Thinner: DP)	PE (12m²/l - 1 coat - Thinner: DP ) or HPE (8m²/l - 1 coat - Thinner: DP )
Filler is needed	WATERTIGHT Fast drying epoxy filler	WATERTIGHT Fast drying epoxy filler
Undercoat	U3 (14m²/l - 1 or 2 coats - Thinner: WS)	U2 (12 m²/l - 1 or 2 coats -Thinner: DP)
Finishing enamel	STARLAC (14m²/l - 2 coats - Thinner: WS )	L2 (12m²/l - 2 coats - Thinner: DP)
Non skid	Deck Grip (10m²/l - 1 or 2 coats - Thinner: DA)	Nautix grip (8m²/kg - 1 or 2 coats - Thinner: DP ) or Deck Grip (10m²/l - 1 or 2 coats - Thinner: DA)

Painting bilges

	High performance 2 pots system	Conventional 1 pot system
Preparation	Mechanical (sand) or Chemical with Scouring Acid Wash and degrease with SD	Mechanical (sand) or Chemical with Scouring Acid Wash and degrease with SD
Adhesion primer	Acralu (15m²/l - 1 coat - Thinner: DP )	Acralu (15m²/l - 1 coat - Thinner: DP )
Finishing paint	U2 white or PE grey (12 m²/l - 1 or 2 coats - Thinner: DP)	DB (10m²/l - 2 coats - Thinner: WS)

Painting an aluminium mast

	High performance 2 pots system
Preparation	Mechanical (sand) or Chemical with Scouring Acid Wash and degrease with SD
Adhesion primer	Acralu (15m²/l -1 coat - Thinner: DP )
Undercoat and protection	U2 (12 m²/l - 1 or 2 coats - Thinner: DP)
Finishing paint	L2 (12m²/l - 2 coats - Thinner: DP)

Restoring varnishes

	High performance 2 pots system	Conventional 1 pot system
Preparation	Sand (P320) and clean dusts	Sand (P320) and clean dusts
Finishing paint	VA2 (9 m²/l - Multicoating application - sand with P400 between coats - Thinner: DP)	VA3 (15m²/l - Multicoating application - sand with P400 between coats - Thinner: WS)