IMPORTANT **Do not apply Unepoxy HRT on aluminum hulls or outdrives.**

Application Systems and Tips

Unepoxy HRT is easily applied by brush, roller or spray. When rolling use only a high-quality short nap (maximum 3/16” nap) roller cover. Apply using thin coats. For the smoothest possible finish: Thin the paint approximately 5 - 10% with 120 Brushing Thinner.

Previously Painted Surfaces: To paint old hard and ablative antifoulings, thoroughly wipe down the surface with 120 Brushing Thinner, paying particular attention to waterline areas, then sand painted surface with 80 grit sandpaper. Old tin or copper copolymers or Teflon based antifoulings should be sanded thoroughly with 80 grit sandpaper to remove the chalky outer surface, wiped clean, apply 1 coat of Unepoxy HRT. Soft, sloughing antifoulings should be removed before applying Unepoxy HRT.

Bare Fiberglass: All bare fiberglass, regardless of age, should be thoroughly cleaned with 92 Bio-Blue Hull Surface Prep or de-waxed several times with Pettit D-95 Dewaxer.

    Sanding Method – Sand the hull thoroughly with 80-grit sandpaper to a dull, frosty finish and rewash the sanded surface with 120 Brushing Thinner to remove sanding residue. Apply two thin coats of Unepoxy HRT, following application instructions. Careful observation of application instructions will help ensure long-term adhesion of this and subsequent years’ antifouling paint.

    Non-Sanding Method -Thoroughly clean, de-wax and etch the surface with 92 Bio-Blue HullSurface Prep using a course Scotch-Brite pad. Thoroughly rinse all residue from surface and let dry. Then apply one coat of Pettit 4700/4701 High Build Epoxy Primer. Consult the primer label for complete application and antifouling top coating instructions. Apply two thin coats of Unepoxy HRT.

Barrier Coat: Fiberglass bottoms potentially can form osmotic blisters within the gelcoat and into the laminate. Prepare the fiberglass surface as mentioned above (sanding method) then apply two -three coats of Pettit 4700/4701 High Build Epoxy Primer or Pettit Protect 4100/4101 White High Build Epoxy Primer per label directions. Apply two thin coats of Unepoxy HRT. See Technical Bulletin TB-1000 Gelcoat Blister Repair and Prevention Specification for detailed instructions

Blistered Fiberglass: See Technical Bulletin TB-1000 Gelcoat Blister Repair and Prevention Specification for detailed instructions.

Bare Wood: Bare wooden hulls should be sanded thoroughly with 80-grit sandpaper and wiped clean of sanding residue. A coat of 6627 Tie-Coat Primer thinned 25% with 97 Epoxy Thinner should be applied directly to the bare wood. Allow drying 4 hours and then applying two un-thinned coats of UnepoxyHRT per instructions. Existing, hard antifouling paint should bethoroughly sanded. If priming is necessary on bare wood spots, apply a touch-up coat of 6627 Tie-Coat Primerthinned 25% with 97 Epoxy Thinner to these areas. Then apply the subsequent coats of Unepoxy HRT.

Steel Hulls : Clean surface with 120 brushing thinner. Remove loose rust and scale fromthe metal surface, scrape, sandblast or wire brush to 2 - 3 mil profile. Blow off residuethen apply one or two coats of Pettit 6980 Rustlok Primer*followed by two coats of Pettit 4700/4701 High Build Epoxy Primer. Follow with Unepoxy HRT.

Underwater Metal Parts: Solvent clean, abrade to clean bright metal by sanding with 60-80 grit sandpaper, sandblasting or wire brushing. Apply 2 - 3 coats of Prop Coat Barnacle Barrier 1792 followed by 2 thin coats of Unepoxy HRT.

Maintenance: No antifouling paint can be effective under all conditions of exposure. Man-made pollution and natural occurrences can adversely affect antifouling paint performance. Extreme hot and cold water temperatures, silt, dirt, oil, brackish water and even electrolysis can ruin an antifouling paint. Therefore, we strongly suggest that the bottom of the boat be checked regularly to make sure it is clean and that no growth is occurring. Lightly clean the bottom with a sponge or cloth to remove anything from the antifouling paint surface. Cleaning is particularly important with boats that are idle for extended periods of time.

Click here to view Product TDS
Click here to view Product SDS

Finish: Flat

Solids by Volume: 42%

Solids by Weight: 58%

Coverage: 500 sq. ft/gal.

VOC: 475 grams/liter (as supplied)

Biocide: Cuprous Oxide… 23.7%

Flash Point:  > 105°F

Application Method: Brush, roller, airless or conventional spray

Maximum Roller Thickness: 3/16”

Number of Coats: 1 minimum per season with additional coat at waterline

Wet Film Thickness: 3.5 mils

Dry Film Thickness: 1.5 mils

Application Temp: 50° F. Min. / 90°F.Max.

Thinner: 120 Brushing Thinner

                 121 Spraying Thinner

Dry Time: Click here to view Product TDS