Olympic WaterGuard 5 gal Clear Exterior Waterproofing Wood Sealer

In this review the Olympic WaterGuard 5 gal Clear Exterior Waterproofing Wood Sealer is assessed as a practical, no-fuss option for homeowners and DIYers who need clear, penetrating protection for outdoor wood. The bottom line: this ready-to-use, water-based sealer is best for anyone who wants to preserve natural wood grain while adding reliable water repellency and UV sunblock protection without mixing or special equipment. It stands out for ease of application, quick drying and broad compatibility with new, pressure-treated and weathered wood.

Key Features

• Ready to use: The sealant comes pre-mixed so it can be applied immediately to wood without thinning or special preparation.
• Clear penetrating formula: It soaks into the wood to protect fibers while allowing the natural grain and color to show through.
• Waterproofing protection: A durable water-based barrier repels moisture and helps prevent water damage on exterior surfaces.
• Sunblock UV protection: Built-in UV resistance helps slow weathering and color loss on exposed wood.
• Wide application: Suitable for decks, fences, siding, railings and outdoor furniture, including new, pressure-treated and weathered wood.
• Easy cleanup: Being water based, brushes and tools clean up with soap and water, avoiding harsh solvents.

Who It's For

This product is aimed at homeowners, property managers and DIYers who want clear, low-maintenance protection for exterior wood while preserving the natural look. It is especially useful for those working on decks, railings, fences or outdoor furniture who want a penetrating sealant rather than an opaque coating.

People who need heavy film-building finishes, colored stains, or specialized oil-based treatments should look elsewhere. Also, those seeking a spray-optimized delivery may note some customers mentioned spray quality issues, so brush or roller application is the safer choice.

Pros & Cons

Pros

• Provides effective water repellency with customers reporting water beading on treated surfaces.
• Allows wood grain to show through while adding UV sunblock protection to reduce weathering.
• Easy to apply and cleans up with soap and water, making maintenance straightforward.
• Good coverage rate, with the product rated to cover up to 350 sq. ft. per gallon under typical conditions.

Cons

• Some users reported issues with spray quality, so brush or roller application may produce more consistent results.
• As a clear sealer, it does not add color or heavy film protection that some stain systems provide.

Specifications

Product	Clear exterior waterproofing wood sealer
Container size	5 gal
Base	Water based
Coverage	Up to 350 sq. ft. per gallon
Recommended surfaces	Decks, fences, siding, railings, outdoor furniture
Compatible wood	New wood, pressure-treated, weathered wood
Cleanup	Soap and water

Our Verdict

Olympic WaterGuard 5 gal Clear Exterior Waterproofing Wood Sealer is a practical, value-oriented choice for preserving the natural look of exterior wood while adding dependable water repellency and UV protection. It is best for homeowners and DIYers who want a ready-to-use, easy-clean waterbased sealer; those seeking colored stains or heavy film finishes should consider alternatives.

Frequently Asked Questions

Can this be used over previously stained wood?
Yes, it is suitable for previously coated wood that has a weathered clear or semi-transparent stain, but test a small area first for adhesion.

How is cleanup handled?
Tools and brushes clean up easily with soap and water because the formula is water based.

Will it change the color of the wood?
It is a clear penetrating sealer that allows grain to show; some darkening or added depth may appear after multiple coats.