Premium ISO/NPG neutral, white, and colored marine gelcoats. Compatible with coloring agents. Gelcoat is available with and without wax for boat building, repairs and layups. Includes MEKP (methyl ethyl ketone peroxide) catalyst.
Our premium, high-viscosity marine gelcoat is non-sagging, and super strong. In fact, its ISO/NPG (Isophthalic/Neopentyl Glycol) resins are considerably more durable than standard, orthophthalic resin formulas. TotalBoat marine gel coat can be colored prior to adding catalyst. Adding color to Neutral gel coat produces bold or dark colors; adding color to a white gelcoat creates lighter, pastel colors.
Gel time depends on amount of catalyst admixed
Adjust the catalyst level to slow down or speed up gel time. Cooler temperatures may require a higher percentage of catalyst than warmer temperature conditions.
Proper catalyzation is imperative for proper cure when using polyester. The higher the percentage of hardener, the faster the gelcoat will dry. Because air and surface temperatures also affect the drying of gelcoat, take care not to over-catalyze or under-catalyze. Do not add less than 1% catalyst or greater than 3% catalyst. We recommend a trial batch to determine final catalyst ratio.
Gelcoat With Wax (for Finishing) Details
Contains wax so additional patch aid additives are not required.
Cures properly without PVA, wax paper, or special tools.
Non-sagging formula fills superficial scratches. Deeper scratches require a filler such as TotalBoat Silica Thickener added to the gel coat.
Gel coat can be mixed with coloring agents made specifically for polyesters (sold separately).
Catalyst: MEKP (methyl ethyl ketone peroxide), included
Colors: Available in Neutral, White, and Light Gray.
Sizes: Neutral is available in Quarts only; White gelcoat is available in Quart and Gallon sizes; Black and Light Gray are available in Gallons only.
Gelcoat Without Wax (for Layups) Details
Does not contain a wax additive, making it ideal as the first layer when building a boat hull or composite part on a prepared mold.
Non-sagging formula can be mixed with coloring agents made specifically for polyesters (sold separately).
Catalyst: MEKP (methyl ethyl ketone peroxide), included
Colors: Available in Neutral and White.
Sizes: Neutral gelcoat is available in a Quart size Kit only; White gelcoat is available in Quart and Gallon size Kits.
Note:Wax Additive is available to add to Gelcoat Without Wax so it cures to a tack-free surface.
Colors: White, Black, Light Gray, and Neutral (for tinting – it contains no color, but it is not considered clear).
VOC Content: Less than 400 g/L
Coverage (sq ft/gal): 12.8 sq ft @ 1/8"; 25.7 sq ft @ 1/16"; 51.3 sq ft @ 1/32". Does not include any material wasted from application; generally 10- 15% is wasted.
Shelf Life: 6 months from date of manufacture
THINNER, PREP & CLEANUP SOLVENTS
Thinner: Styrene thinner. Acetone is not recommended as it can cause yellowing, orange peel, and other detrimental results.
Surface Prep Solvent: Acetone
Cleanup Solvent: Acetone. Once cured, it must be removed mechanically.
HOW IT COMPARES
Gelcoat
Best for:
Substrates:
Color:
Application method:
Catalyst/percentage:
Mold release agents:
Contains an air dry agent?
Application temperature/RH:
Working time:
Gel time:
Thinner:
Cleanup:
Coverage:
Units of measure:
THIS ITEM
Gelcoat
Best for:
Boat building, repairs and layups
Substrates:
Polyester resin, TotalBoat Polyester Fairing Compound, previously gelcoated surfaces, TotalBoat Polyester Structural Repair Putty, TotalBoat TotalProtect, and TotalBoat 2-Part Epoxy Primer. See Technical Data Sheet for details.
Color:
White, Light Gray, Neutral
Application method:
Brush, Roll, or Spray
Catalyst/percentage:
2% MEKP, 9% active (14-16 drops of MEKP per ounce, or 2 teaspoons per pint of gelcoat)
Contains an air dry agent?
Available with and without wax
Application temperature/RH:
50-95°F (70-80°F is ideal), 0-90% RH
Working time:
10-15 minutes (2% catalyst @ 77°F, 1 ounce)
Gel time:
8-12 minutes (2% catalyst @ 77°F, 1 ounce)
Thinner:
Styrene
Cleanup:
Acetone. Once cured, it must be removed mechanically.
Coverage:
Approximately 12.8 sq ft/gal @ 1/8"; 25.7 sq ft/gal @ 1/16"; 51.3 sq ft/gal @ 1/32". Estimates do not account for waste.
Units of measure:
Quart and Gallon (includes MEKP catalyst)
Polyester Laminating Resin
Build coat resin for laminating & repairs
Polyester resin, TotalBoat Polyester Fairing Compound, previously gelcoated surfaces, TotalBoat Polyester Structural Repair Putty, metals (that have been ground or heavily sanded to a bare, shiny finish, before they can oxidize, and wood substrates sanded to a rough surface
Blue
Brush or Roll
1% MEKP, 9% active (7-8 drops of MEKP per ounce)
Mold release paste wax, PVA (polyvinyl alcohol)
No
50-95°F (70-85°F is ideal); 0-90% RH
Varies by mass and application thickness
Varies by mass and application thickness
Do not thin this product.
Acetone. Once cured, it must be removed mechanically.
Approximately 12.8 sq ft/gal @ 1/8"; 25.7 sq ft/gal @ 1/16"; 51.3 sq ft/gal @ 1/32". Estimates do not account for waste.
Quart and Gallon (includes MEKP catalyst)
Polyester Finishing Resin
Final or finish coat over laminating resin
Polyester resin, TotalBoat Polyester Fairing Compound, previously gelcoated surfaces, TotalBoat Polyester Structural Repair Putty, metals (that have been ground or heavily sanded to a bare, shiny finish, before they can oxidize, and wood substrates sanded to a rough surface
Blue
Brush or Roll
1% MEKP, 9% active (7-8 drops of MEKP per ounce)
Mold release paste wax, PVA (polyvinyl alcohol)
Yes
50-95°F (70-85°F is ideal for a proper cure); 0-90% RH
Varies by mass and application thickness
Varies by mass and application thickness
Do not thin this product.
Acetone. Once cured, it must be removed mechanically.
Approximately 12.8 sq ft/gal @ 1/8"; 25.7 sq ft/gal @ 1/16"; 51.3 sq ft/gal @ 1/32". Estimates do not account for waste.
Quart and Gallon (includes MEKP catalyst)
VIDEOS
Watch More Videos
How to Repair Crazing on Your Boat | Boatworks Today with Andy Miller
WARNING: This product can expose you to chemicals including styrene, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.go
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