Is this polyester resin

No it is not polyester resin. It is epoxy with a 5 to 1 ratio, and cures extremely hard. Polyester should not be used on a repair below the water line. Epoxy will not allow water to absorb into the repaired area.

can I use this to fix lamination on my RV side walls

Worked great for me rebuilding the wall sandwich (fiberglass, thin ply, foam board,,,) after water delamination.

Can you do inside of bathtub with this?

Good Afternoon, this product cures to a high strength, water resistant finish, so using within a bathtub should be fine. Thank you.

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TotalBoat 5:1 Marine Epoxy Resin Kit for Bonding, Filleting, Coating, and Laminating - Use for Fiberglass, Wood, Carbon Fiber, Boat Building, Repairs, Woodworking (Gallon, Fast Hardener, Pumps)

TotalBoat 5:1 Marine Epoxy Resin Kit for Bonding, Filleting, Coating, and Laminating - Use for Fiberglass, Wood, Carbon Fiber, Boat Building, Repairs, Woodworking (Gallon, Fast Hardener, Pumps)

Product ID: 10368675

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Details

Brand
TotalBoat
Specific Uses For Product
Woodworking &
Material
Epoxy Resin
Item Form
Liquid
Special Feature
Compatible

⚓5:1 mix ratio for precision

⏱️Fast hardener with 12-min pot life

🛠️Bonds wood, fiberglass, carbon fiber

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Description

⚓ Build stronger, faster, and smarter with TotalBoat Marine Epoxy!

RAPID CURING OPTIONS - Choose fast or slow hardener to match your project timeline
MARINE GRADE DURABILITY - Resists salt, moisture, and chemicals for long-lasting repairs
PRECISION 5 1 MIX RATIO - Engineered for exact bonding strength and ease of use
VERSATILE MULTI SURFACE BONDING - Seamlessly adheres to wood, steel, aluminum, fiberglass, and carbon fiber
COMPLETE KIT WITH COLOR CODED PUMPS - Everything you need for professional-grade application, no guesswork

TotalBoat 5:1 Marine Epoxy Resin Kit delivers a high-strength, marine-grade bonding solution ideal for boat building, repairs, and woodworking. Featuring a precise 5:1 resin-to-hardener ratio, fast and slow curing options, and compatibility with multiple materials including fiberglass and carbon fiber, this kit ensures durable, chemical- and moisture-resistant results. Complete with color-coded pumps and mixing supplies, it’s designed for professionals and enthusiasts seeking reliable, long-lasting structural repairs.

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