Interlux Handy Antifouling Painting Guide

The following charts are a quick reference guide to Interlux bottom painting systems. Three different processes are illustrated. Choose the level of blister protection based on your waters and boat type.

CONVENTIONAL ONE PART PRODUCTS This system provides a good level of protection
STAGE	PRODUCT	ALUMINUM	STEEL	WOOD
CLEAN	Fiberglass Solvent Wash 202 or Fiberglass Surface Prep YMA601 or Special Thinner 216	YES	YES	202 or 216
SAND		grind or sandblast	grind or sandblast	Sand with 80 grit sandpaper
SURFACE PRIMER	Viny-Lux Primewash 353/354	1 Coat	1 Coat	DO NOT USE
PRIMER	Primocon®	1 Coat	1 Coat	1 Coat(THINNED 10-15%)
FILLER	Watertite	as needed	as needed	as needed
PRIMER	Primocon®	2–3 Coats	2–3 Coats	1–2 Coats
ANTIFOULING	Interlux® Antifouling	2–3 Coats	2–3 Coats	2–3 Coats

HIGH PERFORMANCE TWO – PART PRODUCTS This system provides the maximum level of antifouling and blister protection
STAGE	PRODUCT	ALUMINUM	STEEL	WOOD
CLEAN	Fiberglass Solvent Wash 202 Fiberglass Surface Prep YMA601 or Special Thinner 216	YES	YES	202 or 216
SAND		grind or sandblast	grind or sandblast	Sand with 80 grit sandpaper
SURFACE PRIMER	Viny-Lux Primewash 353/354	1 Coat	1 Coat	DO NOT USE
PRIMER	Interprotect® 2000E	1 Coat	1 Coat	1 Coat (THINNED 10-15%)
FILLER	Watertite	as needed	as needed	as needed
PRIMER	Interprotect® 2000E	2–3 Coats	2–3 Coats	1–2 Coats
ANTIFOULING	Interlux® Antifouling	2–3 Coats	2–3 Coats	2–3 Coats

VC 17M® & VC 17M® EXTRA This system provides the maximum level of antifouling and blister protection
STAGE	PRODUCT	FIBERGLASS	WOOD	STEEL
CLEAN	Fiberglass Solvent Wash 202 Fiberglass Surface Prep YMA601 or Special Thinner 216	YES	202 or 216	202 or 216
SAND		80 grit sandpaper	80 grit sandpaper	grind or sandblast
SURFACE PRIMER	Viny-Lux Primewash 353/354	DO NOT USE	DO NOT USE	1 Coat
FILLER	Watertite	as needed	as needed	as needed xx
PRIMER	VC® Tar2	4-5 Coats	4-5 Coats	4-5 Coats
ANTIFOULING	VC 17m® & VC 17m® Extra	2–3 Coats	2–3 Coats	2–3 Coats

^xx   If fairing is necessary on underwater metal surfaces apply 1 coat of InterProtect® 2000E/2001E after blasting or sanding, wait 4 hours and apply Interfill® or Watertite Epoxy Fairing Compound, then apply 4-5 coat of VC Tar2.


If gelcoat blister protection is not needed the antifouling paint can be applied directly to bare fiberglass. See Interlux article Bare Fiberglass Bottom Paint Guide

For maximum fiberglass protection system when finishing with antifoulants other than VC17, See Protect Against Gelcoat Blisters with Interlux Interprotect



Original article from

BOAT PAINTING GUIDE Bottom                          Antifouling      Blister Repair & Prevention Interlux Antifouling Basics How Antifouling Paint Works Interlux Antifoulant Selection Guide Painting Bare Fiberglass Bottoms Antifouling Paint Systems for Various Substrates Handy Specifications How To Paint Previously Painted Bottoms Interlux Applying Antifouling Advice Antifouling Paint Calculator Antifoulant on Aluminum Hulls Interlux Antifoulant on Metal Outdrives, Keels and Centerboards Hints for the Perfect Bottom Finish Interlux Antifoulant FAQ   What is Osmosis Gelcoat Blistering How to Recognize and Treat Osmosis Gelcoat Blisters Protect Against Gelcoat Blisters with Interlux Interprotect Interlux Gelcoat Blister Repair FAQ