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Steel Boats

TOPSIDES AND UPPERWORKS TREATMENT

NEW SUBSTRATE: Surfaces to be coated should be free from rust, corrosion and traces of oils. The best method of surface preparation is to carry out adequate sandblasting in accordance to SA 2,5 standard. If this is not possible it will be necessary to prepare the surface by wirebrushing, scraping or with a sander taking care to remove any trace of rust from the substrate. Traces of oils, grease and dust can generally be removed by solvent degreasing. A thorough preparation of the surface of steel is essential as it will substantially affect the final result. Then follow with the required coating system.

PREVIOUSLY COATED SURFACES: In good conditions. If the old paint is in good condition and it only needs a topcoat because it is dull, dirty or slightly powdering but with the underneath coatings still well fixed to the substrate(with no cracks or bubble), proceed with thorough cleaning and degreasing followed by suitable sanding with medium-fine abrasive paper (#180-240). Thoroughly remove dust and all sanding residuals before starting the paint application. Apply 1 to 3 coats of topcoat compatible with pre-existing paints.
In poor conditions. If the old paint is in poor condition of maintenance with cracking or flaking paint, it is then necessary to completely remove the old paint back to bare steel with Svernigraf remover. Then proceed withsurface preparation as described above for “NEW SUBSTRATE” and follow with the suggested coating system.

BOTTOM TREATMENT

NEW SUBSTRATES: Please refer to what has been already described above in “NEW SUBSTRATE” for Topsides and Upperworks.

PREVIOUSLY COATED SURFACES: In good conditions. If the bottom is in good condition it is generally enough to remove any powdering parts of the old antifouling with fine abrasive paper and apply 2 coats of new antifouling compatible with the pre-existing one. If the type of the old antifouling is of unknown nature it is recommended to apply 2-3 coats of Solver primer intermediate undercoat before applying the new antifouling.
In poor conditions. If the old paint is in a poor condition with cracked or flaking paint it is necessary to remove this completely back to bare steel by scraping or by Svernigraf paint remover. Then proceed with surface preparation as already described in “NEW SUBSTRATE” and follow up with the suggested coating system.

STEEL - Indicative coating systems for new boats

(B1) BOTTOM: One-component synthetic-chlorinated coating system
Nr of
coats		 Product Brush/Roller Spray/Airless Recoat
time/hrs		 Coverage
m2/LT		 Thickness
dry micr.
Thinning Thinning Thinning Thinning
2 CROMOMINIO-AT 12-25% 107 15-30% 107 24 7-9 40-50
2 SOLVER PRIMER 10-25% 400 15-30% 400 6-12 4-6 60-70
2-3 LONG LIFE (or): 0-5% 400 5-8% 400 6-12 5-8 60-90
STANDARD PLUS 0-5% 400 10% 400 18-24 10-12 50-60
SERENISSIMA SR (or) 0-5% 400 5-8% 400 12 10-11 40-50
SERENISSIMA (or) 0-5% 400 10-15% 400 8-12 8-10 40-50
SERENISSIMA STC 0-5% 400 5-8% 400 12 9-10 50-60

(B2) BOTTOM: Two-component epoxy-chlorinated coating system
Nr of
coats		 Product Brush/Roller Spray/Airless Recoat
time/hrs		 Coverage
m2/LT		 Thickness
dry micr.
Thinning Thinning Thinning Thinning
2 EPOFOND AM-9 10-15% 765 15-25% 765 12-24 8-9 50
2 SOLVER PRIMER 10-25% 400 15-30% 400 6-12 4-6 60-70
2-3 LONG LIFE (or): 0-5% 400 5-8% 400 6-12 5-8 60-90
STANDARD PLUS 0-5% 400 10% 400 18-24 10-12 50-60
SERENISSIMA SR (or) 0-5% 400 5-8% 400 12 10-11 40-50
SERENISSIMA (or) 0-5% 400 10-15% 400 8-12 8-10 40-50
SERENISSIMA STC 0-5% 400 5-8% 400 12 9-10 50-60

(B3) TOPSIDES & UPPERWORKS: One-component system
Nr of
coats		 Product Brush/Roller Spray/Airless Recoat
time/hrs		 Coverage
m2/LT		 Thickness
dry micr.
Thinning Thinning Thinning Thinning
2 CROMOMINIO-AT 15-25% 107 15-30% 107 24 7-9 40-50
2 SOLVER PRIMER 10-25% 400 15-30% 400 6-12 4-6 60-70
2 SOTTOFONDO NAUTICA 10-20% 107 20-30% 900 18-24 9-10 40-50
2 TOPKAPI SMALTO 10-20% 107/109 10-25% 900 18-24 11-13 40-50

(B4) TOPSIDES & UPPERWORKS: Two-component system
Nr of
coats		 Product Brush/Roller Spray/Airless Recoat
time/hrs		 Coverage
m2/LT		 Thickness
dry micr.
Thinning Thinning Thinning Thinning
1 EPOZINC 2C *10-15% 765 25-35% 765 12-24 4-5 50
1 EPOFOND AM-9 10-15% 765 15-25% 765 12-24 8-9 50
1 EPOXY LIGHT FILLER 0% (765) 0% (765) 24-48 2 500
1 EPOFONDO AM-9 10-15% 765 15-25% 765 12-24 8-9 50
2 POLIFOND 15-30% 205 25-35% 203 12-24 14-15 35-40
2 ACRIGLASS (oppure): 15-25% 205 20-35% 203 24 10 40
SPACE TOP ❸ (or): 20-30% 201/205 20-35% 201/205/203 18-24 13-14 40
WHITEXT 5-10% 205 5-10% 203 24 5-6 100

*(Epozinc 2C: touch ups only for application by roller)


(B5) BOTTOM: Coating system for propellers, flaps and stern-drives
Nr of
coats		 Product Brush/Roller Spray/Airless Recoat
time/hrs		 Coverage
m2/LT		 Thickness
dry micr.
Thinning Thinning Thinning Thinning
1 ELIPRIMER 2C 20-35% 765 20-35% 765 12-24 8-9 30-40
2 ELIFAX NEW 0-5% 400 5% 400 24 8 50
❸ Space Top: Use Thinner 201/205 when temperature above 23°C or Thinner 205/203 when below 23°C

STEEL – Indicative coating systems for new boats: PROFESSIONAL LINE

(P3) BOTTOM: One-component synthetic-chlorinated coating system
Nr of
coats		 Product Brush/Roller Spray/Airless Recoat
time/hrs		 Coverage
m2/LT		 Thickness
dry micr.
Thinning Thinning Thinning Thinning
2 EVIOX CROMOMINIO or 10-15% 107 15-25% 900 16-24 9 40
EVIOX MINIO OLEOFENOL. 15-25% 107 15-25% 900 12-24 11 40
2 SOLVER PRIMER 10-25% 400 15-30% 400 4-6 60 70
2-3 VENOX PLUS (or): 0-5% 400 5-10% 400 2-4 6-7 50
VENOX SUPER (or): 0-5% 400 5-10% 400 4-6 6-7 50
SIRENA ABR 0-5% 400 10-15% 400 8-12 8-10 40

(P4) TOPSIDES & SUPERSTRUCTURES: One-component coating system
Nr of
coats		 Product Brush/Roller Spray/Airless Recoat
time/hrs		 Coverage
m2/LT		 Thickness
dry micr.
Thinning Thinning Thinning Thinning
2 EVIOX CROMOMINIO or 10-15% 107 15-25% 900 16-24 9 40
EVIOX MINIO OLEOFENOL. 15-25% 107 15-25% 900 12-24 11 40
1 SINTOFILLER 0% (107) 0% (107) 24-48 5 120
2 SOTTOFONDO NAUTICA 10-20% 107 20-30% 900 18-24 9-10 40-50
2 SINTLAC 5% 107 5-10% 900 24 10 40