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 for Fiberglass & Wood 1 Gallon Kit, Slow | Two-Part Epoxy for Fiberglass & Wood Repairs, Boat Building, and Laminating; Traditional Marine-Grade Formula; Pumps Included

TotalBoat 5:1 Marine Epoxy Resin for Fiberglass & Wood 1 Gallon Kit, Slow | Two-Part Epoxy for Fiberglass & Wood Repairs, Boat Building, and Laminating; Traditional Marine-Grade Formula; Pumps Included

Product ID: 13247904

Details

Brand
TotalBoat
Item Form
Liquid
Material
Epoxy Resin
Special Feature
[Versatility
Specific Uses For Product
Boat building

⏳20 min pot life (slow hardener)

🧪5:1 resin-to-hardener ratio

🛥️7500 psi tensile strength

HK$3103

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Description

🛠️ Build, Bond, and Repair Like a Pro — Don’t Let Your Craft Wait!

VERSATILE COMPATIBILITY - Bonds seamlessly with wood, fiberglass, carbon fiber, metals, and composites—ideal for boat building, woodworking, and automotive repairs.
FLEXIBLE WORKING TIME OPTIONS - Choose slow hardener for extended 20-minute pot life or fast hardener for quick 12-minute cures to match your project pace.
UNMATCHED MARINE GRADE STRENGTH - 7500 psi tensile strength ensures durable, long-lasting repairs and builds that withstand harsh marine environments.
CUSTOMIZABLE WITH FILLERS ADDITIVES - Create fillets, fairings, and gap-filling adhesives tailored to your project needs with compatible thickeners and fillers.
PRECISION MIXING WITH COLOR CODED PUMPS - Accurate 5:1 resin-to-hardener ratio simplifies application and guarantees a perfect cure every time.

TotalBoat 5:1 Marine Epoxy Resin Kit delivers professional-grade strength and versatility with a 7500 psi tensile strength, low viscosity for easy fiberglass wetting, and customizable curing times. Perfect for boat building, repairs, and composite projects, it includes resin, hardener, and color-coded pumps for precise mixing. Waterproof and chemical-resistant, this kit is trusted by pros to create durable, sandable, and paintable finishes that stand up to the toughest marine conditions.

Specifications

ASIN	B00HR8515C
Best Sellers Rank	#3,955 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #3 in Boat Painting Supplies
Brand Name	TotalBoat
Color	Clear Amber
Compatible Material	Concrete, Fiberglass, Glass, Masonry, Metal, Stone, Wood
Container Type	Bottle
Customer Reviews	4.5 4.5 out of 5 stars (1,779)
Full Cure Time	24 hours
Global Trade Identification Number	00811932021021
Included Components	Resin, Hardener
Item Form	Liquid
Item Package Quantity	1
Manufacturer	TotalBoat
Material Type	Epoxy Resin
Model	TB-521KITSB-K
Other Special Features of the Product	[Versatility, Two hardener speeds, Compatibility with TotalBoat 5:1 Epoxy Resin Systems]
Part Number	TB-521KITSB-K
Specific Uses For Product	Boat building, Repair
Tensile Strength	7500 psi
UPC	811932021021
Unit Count	152 Fluid Ounces
Viscosity Level	Low
Volume	739 ml
Water Resistance Level	Waterproof

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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HK$3103

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hong Kong.

Secure transaction

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