TotalBoat Alumipaint AF Aluminum and Pontoon Boat Bottom Paint Multi-season copper-free antifouling paint for pontoon & aluminum hulls Ablative paint wears away to continuously expose fresh biocide for maximum protection Specifically formulated for use on pontoon & aluminum boats Excellent performance on outdrives & running gear Available in quarts & gallons in your choice of black or navy blue &#034;Had boat in from May to October in saltwater at NJ Shore. Boat is docked in saltwater lagoon when at rest which normally has junk that just sticks and grows all over bottom within 2 weeks but almost nothing grew on it.&#034; <span class="a-text-italic">- BKNJ17 via Amazon Reviews</span> &#034;Product arrived with no damage. It applied well over the aluminum boat. Looks great! Will recommend and use again.&#034; <span class="a-text-italic">- Randy E. via Amazon Reviews</span> <u>Clean</u> the surface to remove loose dirt. <u>Sand</u> with 220-grit sandpaper or an abrasive pad, or blast to bright, shiny metal. <u>Etch and condition</u> by applying <span class="a-text-bold">TotalBoat Aluminum Boat Etch Wash</span>; After 5 minutes, rinse with fresh water and dry completely. Mask the dried surface, and apply barrier coat. <u>Apply 4-5 coats</u> of <span class="a-text-bold">TotalBoat Aluminum Boat Barrier Coat</span>, waiting 3-48 hours between each coat (@75F). <u>Recoat barrier coat with itself</u>. Up to 48 hours between each coat, no sanding is required. If you miss the 48-hour window between coats, sand with 80-grit sandpaper, wipe the surface clean with <span class="a-text-bold">TotalBoat Special Brushing Thinner 100</span>, then recoat with Aluminum Boat Barrier Coat. Before applying AlumiPaint AF antifouling paint, <u>do the &#034;thumbprint test&#034;</u> to see if the surface is ready. Wearing a pair of protective gloves, touch the surface gently with your thumb. If the primer sticks to your thumb, it&#039;s too soon to overcoat. If you can&#039;t see your thumbprint, sand with 80-grit &amp; wipe clean with TotalBoat Special Brushing Thinner 100, before painting. <u>If the primer doesn&#039;t stick to your thumb, but you can see your thumbprint on the surface, it&#039;s time to apply antifouling paint</u>. Shake or stir AlumiPaint AF thoroughly. Apply by brush or roller. We recommend a 3/8&#034; nap roller cover. Apply 1-2 coats, waiting 1-4 hours between coats. 2 coats are recommended for application over bare substrates, around the waterline, and any areas with increased wear. Allow paint to dry 12-24 hours before launching the boat.