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.

Totalboat 5 1 Marine Epoxy Resin For Fiberglass And Wood

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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¥30364

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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Description

🛠️ Build, Bond, and Brave the Elements with TotalBoat’s Marine-Grade Epoxy!

MARINE GRADE DURABILITY - Engineered to resist salt, moisture, chemicals & weather for long-lasting repairs.
PRECISION MIXING SYSTEM - Color-coded pumps ensure perfect 5:1 resin-to-hardener ratio every time—no guesswork.
SELF LEVELING VISCOSITY - Optimized flow for flawless fiberglass wet-out and smooth laminations.
VERSATILE COMPATIBILITY - Bonds wood, fiberglass, metals, composites & more—ideal for boats, RVs, and woodworking.
CUSTOMIZABLE FORMULATIONS - Mix with fillers & thickeners to create fairing compounds, fillets, and gap fillers.

TotalBoat 5:1 Marine Epoxy Resin is a high-strength, slow-curing epoxy system designed for professional-grade bonding, coating, and laminating in marine and composite projects. Featuring a precise 5:1 resin-to-hardener ratio with color-coded pumps, it offers 7500 psi tensile strength, excellent chemical and moisture resistance, and self-leveling viscosity ideal for fiberglass applications. Compatible with wood, metals, fiberglass, and composites, it’s perfect for boat building, repairs, and advanced woodworking, delivering durable, sandable, and paintable results that stand up to harsh environments.

Specifications

ASIN	B00HR8517A
Best Sellers Rank	#5,132 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #3 in Boat Painting Supplies
Brand	TotalBoat
Brand Name	TotalBoat
Color	Clear (cures to amber)
Compatible Material	Concrete, Fiberglass, Glass, Masonry, Metal, Stone, Wood
Container Type	Bottle
Customer Reviews	4.5 out of 5 stars 1,803 Reviews
Full Cure Time	7 days
Global Trade Identification Number	00811932021014
Included Components	Resin, Hardener
Item Form	Liquid
Item Package Quantity	1
Item Weight	6 pounds
Manufacturer	TotalBoat
Material	Epoxy Resin
Material Type	Epoxy Resin
Model	365646
Other Special Features of the Product	Self-leveling properties, ideal viscosity for fiberglass cloth, compatibility with various reinforcement fabrics, bare metals, and lead, includes precise mixing pumps, available in different kit sizes
Part Number	365248
Special Feature	Self-leveling properties, ideal viscosity for fiberglass cloth, compatibility with various reinforcement fabrics, bare metals, and lead, includes precise mixing pumps, available in different kit sizes Special Feature Self-leveling properties, ideal viscosity for fiberglass cloth, compatibility with various reinforcement fabrics, bare metals, and lead, includes precise mixing pumps, available in different kit sizes See more
Specific Uses For Product	Repair, Fiberglass projects
Tensile Strength	7500 psi
UPC	811932021014
Unit Count	36 Fluid Ounces
Viscosity Level	Medium to High
Volume	946.35 ml
Water Resistance Level	Waterproof

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TrustScore 4.5 | 7,300+ reviews

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The product exactly matches the description. Very satisfied with my purchase.

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¥30364

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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TotalBoat 5:1 Marine Epoxy Resin for Fiberglass & Wood - 1 Quart Kit, Slow

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Description

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