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See more product details Surface prep is the key to smooth, long-lasting results. A properly prepared surface is clean, solid, and dry. For best results, do not apply primer immediately after rain, during foggy weather, or when the temperature is below 50°F. Use a 1/8" solvent-safe foam roller or a firm polyester brush, for best results. Avoid lap marks by not priming in direct sunlight and by coating sections of the surface either down or across to natural breaks, maintaining a wet edge. Our premium Topside Primer is easy to apply to properly prepared wood, fiberglass, gelcoat, or previously painted surfaces in good condition. Thinning: When brushing or rolling, thin TotalBoat Topside Primer with TotalBoat Special Brushing Thinner 100. If spraying, thin with xylene, up to 15-20%. In most cases, just 1 thin coat of this unique primer's high-solids formula provides the needed adhesive bond for topside paint finishes, even if full hide is not achieved. This makes the job easier because it means you'll do far less sanding in order to get a fair surface ready for finish paint. During application, if your wet edge begins to dry, or you see that you missed a spot and the primer's already setting up, let it dry completely before touching up the area. Tip: Do not apply primer too thickly or you'll lose flexible adhesion characteristics that make TotalBoat Topside Primer one of the marine industry's leading one-part undercoats. Dry Film Thickness (also known as DFT) should be 1-2 mils per coat. Dry Time To Sand or Overcoat: 1 hour @ 90°F, 2 hours @ 70°F, 4 hours @ 50°F. TotalBoat Topside Primer can be used to prime surfaces below the waterline, but it's important to note that it's not an epoxy barrier coat. To prevent osmotic blistering, use TotalBoat TotalProtect Epoxy Barrier Coat and Primer or TotalBoat Aluminum Boat Barrier Coat prior to applying paint. Even our favorite products, the ones we'd come to rely on, had room for improvement. It'd be nice if they could hold up longer, cure faster, coat better, apply easier, and—since we all know boat ownership creates a mini maelstrom in your pocket—cost less. So we took everything we knew from 35 years of customer feedback, combined that with our own boating knowledge, and after a few years of rigorous R&D, TotalBoat was born. Launched, rather. By boaters, for boaters. Need help? The members of our TotalBoat Tech Team are boat owners who really know their stuff. So whether you're trying to figure out what to buy or the best solution for your particular project, they have years of hands-on training, experience, and a passion to help you succeed. To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.







