Can this be used under water?

Hey there, Thank you for reaching out. It technically can be used below the waterline but it's not recommended if the boat will see > 24 hours of submersion at a time

The label says it is "uv stable", what does that mean? does it provide uv protection?

Yes. Based on the description from Jamestown this is thinned varnish. Varnish has good UV protection but nothing last forever in the sun which is why varnish requires another couple coats every year. This is meant for the first couple of coats in about an 8 coat varnish job. Least that is how I use it. Your option is to thin your own or I have enough varnishing from bare wood that I bought this for convenience for the first couple coats then following with in my case Lust varnish also from Jamestown. I really like the Lust since I can overcoat again in about an hour versus a day for the other varnishes I had been using. Good luck!

Can total boat epoxy be used over the top of this?

I would not put epoxy over any sealer. ......

Is it a oil base water sealant or a stain coloring? What are the ingredients?

It is oil based and delivers a relatively clear coat that fills the wood grain quickly in preparation for varnish. However, you can add a solid stain directly to the sealer to get the “color” you desire.

Wood Sealer

Product ID: 385213779

Details

Brand
TotalBoat
Finish Type
Gloss
Liquid Volume
1 Quarts
Material
Wood
Recommended Uses For Product
Interior

⚡Fast drying, no sanding between coats

🌲Seals all wood types, including oily woods

🛡️UV filters for deep wood protection

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€ 214.68

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Sold byAmazon PortugalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Seal it, shine it, own it — the pro’s choice for flawless wood finishes!

ULTIMATE WOOD DEFENSE - Advanced UV filters protect wood fibers from sun damage and prevent varnish peeling.
EFFORTLESS APPLICATION - Brush, roll, or spray on for a flawless seal without thinning or sanding.
TIME SAVING FINISH PREP - Dries quickly to a glossy, level surface ready for varnish in just 24 hours—no sanding needed.
VERSATILE COMPATIBILITY - Perfect primer for all woods—even oily teak and plywood—ensuring smooth, crack-free finishes.
PROFESSIONAL GRADE RESULTS - Pairs seamlessly with TotalBoat Lust or Gleam 2.0 varnishes for stunning, durable gloss.

TotalBoat Wood Sealer is a clear, one-part wood primer designed to seal and protect all wood types, including oily woods like teak. It dries quickly without sanding between coats, contains UV filters to prevent wood checking and varnish delamination, and creates a smooth, glossy surface ready for varnishing. Ideal for interior and exterior use above the waterline, it ensures long-lasting, beautiful finishes when paired with TotalBoat varnishes. Made in the USA with a 4.6-star rating from 370 users, it covers 60-100 sq ft per quart.

Specifications

ASIN	B01M0MZ89O
Brand	TotalBoat
Brand Name	TotalBoat
Compatible Material	Wood
Country of Publication	USA
Coverage	60-100 sq ft per quart
Customer Reviews	4.6 out of 5 stars 370 Reviews
Finish Type	Gloss
Global Trade Identification Number	00811932022400
Item Form	Liquid
Liquid Volume	1 Quarts
Manufacturer	Jamestown Distributors
Manufacturer Part Number	496580
Material	Wood
Material Type	Wood
Product Finish Type	Gloss
Recommended Uses For Product	Interior, Exterior
UPC	811932022400
Unit Count	1.0 Count

Reviews

J**E

Love the product

8.11.2025

K**K

Total boat sealer

1.08.2025

A**.

Great for outdoor furniture!

28.08.2025

B**Y

Great sealant. It's not clear it yellows

18.07.2022

M**I

Total boat sealer/primer

18.12.2024

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