SR-21 Features

• Easy to apply.
• Launch in 15 minutes.
• Super-slick finish contains moly-disulfide and PTFE for increased speed.
• Ultra-thin film technology prevents paint buildup.
• Eliminates sanding between coats.
• Dual biocide controls hard and soft fouling.
• 100% compatible with Interlux VC-17

APPLICATION INFORMATION

SURFACE PREPARATION

MAINTENANCE

SYSTEMS

Previously Painted Surfaces: If the previous coating is in good condition, thoroughly sand with 80 grit paper followed by thorough sanding with 180-grit then 220-grit and finally 320-grit sandpaper to achieve a smooth nonporous surface. Then solvent clean with Pettit 120 Brushing Thinner to remove residue. Apply three coats of SR-21. If the previous coating is soft or in poor condition, remove to the bare surface by sanding or using Pettit 9050 Bottom Paint Remover. Proceed with the appropriate bare system as described below. Old tin copolymers should be removed before applying SR-21 Antifouling Paint.

Bare Fiberglass: All bare fiberglass, regardless of age, must be thoroughly cleaned several times with Pettit 95 Fiberglass Dewaxer. Sand thoroughly with 320-grit sandpaper to a dull, frosty finish and rewash the sanded surface with 95 Fiberglass Dewaxer to remove sanding residue. Then apply three coats of SR-21, following application instructions. Careful observation of the above instructions will help ensure long term adhesion of this and subsequent years' antifouling paint. To eliminate the sanding operation, wash the fiberglass three times using Pettit 95 Fiberglass Dewaxer. Then apply one thin continuous coat of Pettit 6999 Sandless Primer. Topcoat with three costs of SR-21 carefully following the topcoating instructions on the Sandless Primer label. (Use the set-to-touch recoat time over the 6999 Sandless Primer. Do not apply SR-21 over 6999 Sandless Primer that has dried beyond the tack-free state).

Bare Wood: Sand entire surface with 80 grit paper; wash clean with Pettit 120 Brushing Thinner. Apply three coats of SR-21 Antifouling Paint.

Bare Steel: Sandblast or disc sand to a clean, bright finish and remove residue. Then immediately apply two coats of 6980 Rustlok Steel Primer, allowing each to dry only 1-2 hours prior to overcoating. Follow with two coats of Pettit Protect 4700/4701 High Build Epoxy Primer allowing each to dry from two to 24 hours depending upon temperature. Apply three finish coats of SR-21 Antifouling Paint.

Keels - Lead: Abrade surface to bright metal and clean off residue. Apply one thin coat of 6455/044 Metal Primer; allow to dry two hours. Apply one coat of Pettit 6627 Tie Coat Primer then, if fairing is required, apply 7000/7001 Epoxy Fairing Compound. Follow with an additional coat of 6627 Tie Coat Primer per label directions. Apply three finish coats of SR-21 Antifouling Paint.

Keels - Steel or Cast Iron: Abrade surface to bright metal and clean off residue. Apply one coat of 6980 Rustlok Steel Primer, allowing to dry only 1 - 2 hours prior to overcoating. Then, if fairing is required, apply 7000/7001 Epoxy Fairing Compound followed by two coats of Pettit 6627 Tie Coat Primer, finish with three finish coats of SR-21 Antifouling Paint.

DO NOT APPLY SR-21 ON ALUMINUM HULLS OR OUTDRIVES

Technical Information