Top 7 Best Waterproofing For Pressure Treated Wood

Small outdoor wood repairs or touch-ups often require a fast, convenient waterproofing solution. For these situations, a spray-on sealer is ideal, helping prevent water damage before it starts.

OLYMPIC WaterGuard Clear Sealer Spray offers a ready-to-use, portable option for spot-treating pressure treated wood, weathered wood, or areas with existing stains. It's best for homeowners who need to address small problem areas or maintain hard-to-reach spots.

• Spray Application: Allows targeted coverage for quick fixes and detail work
• UV and Water Protection: Shields wood from sun and moisture damage
• Easy Cleanup: Soap and water cleanup simplifies maintenance

Compared to larger containers or brush-on formulas, this spray prioritizes convenience and portability. The tradeoff is limited coverage, making it less suitable for large projects.

Protecting decks, fences, and outdoor furniture from the elements is essential for long-lasting performance. A reliable clear sealer helps maintain the natural look of pressure treated wood while providing essential moisture and UV protection.

This 1-gallon OLYMPIC WaterGuard Clear Exterior Wood Sealer is a practical choice for most home projects, offering enough coverage for typical decks or fences. It's ideal for homeowners seeking straightforward application and easy cleanup.

• 350 sq. ft. Coverage: One gallon covers most standard-sized decks or fences
• Water-Based Formula: Simplifies cleanup and reduces harsh odors
• Versatile Use: Suitable for new, weathered, or previously coated wood

Unlike spray cans or bulk containers, this size balances ease of use with sufficient volume for most residential needs. It may not be the most cost-effective option for very large projects.

Large decks, fences, or multiple outdoor structures require a waterproofing solution that can handle extensive coverage without frequent reapplication. A bulk-size sealer is the most efficient way to protect big projects from weather damage.

The OLYMPIC WaterGuard 5-gallon Clear Exterior Wood Sealer is designed for homeowners or professionals tackling sizable jobs. Its generous volume and easy soap-and-water cleanup make it a practical choice for those with ongoing maintenance needs.

• High Volume: 5 gallons covers up to 1,750 sq. ft. (350 sq. ft. per gallon)
• Water-Based and Low Odor: User-friendly for large, open projects
• Multi-Surface Compatibility: Works on decks, fences, siding, and more

Compared to smaller containers, this option minimizes cost per square foot and reduces the need for frequent purchases. The main tradeoff is storage space and handling bulkier packaging.

Outdoor wood often needs sealing before it's fully dry, especially after rain or cleaning. A waterproofing stain that can be applied to damp wood saves time and helps prevent delays in your project.

Thompson’s WaterSeal Transparent Stain in Natural Cedar is a strong pick for those who want both color enhancement and the flexibility to seal damp or dry wood. It's well-suited for decks, fences, or furniture that can't always be perfectly dried before treatment.

• Damp or Dry Application: No need to wait for wood to dry completely
• Fade-Resistant Color: Maintains appearance through changing seasons
• UV and Water Protection: Guards against sun and moisture damage

Unlike clear sealers, this product adds a transparent tint, highlighting wood texture while providing full protection. The tradeoff is that it will alter the natural color of the wood.

Garden beds and planters require waterproofing that won't harm plants, pets, or soil health. Many traditional sealers contain chemicals unsuitable for food-growing environments.

Shabebe Garden Box Sealer offers a plant-based, non-toxic solution for raised beds and garden structures. It's ideal for eco-conscious homeowners and families with pets or children who want safe, effective wood protection.

• Plant-Based Ingredients: Free from harsh solvents and synthetic chemicals
• Safe for Gardens and Pets: Designed for use around edible plants and animals
• Long-Lasting Bond: Penetrates wood for durable, low-maintenance results

Compared to conventional sealers, this product prioritizes safety and environmental friendliness. The main tradeoff is that it's not recommended for laminated or coated wood surfaces.

Some outdoor projects benefit from a hint of color while still showing the wood's natural texture. A semi-transparent stain provides both waterproofing and subtle tint, helping blend new and old wood or refresh faded surfaces.

Thompson’s WaterSeal Semi-Transparent Stain in Chestnut Brown is a great fit for decks, fences, or siding where a touch of color and strong weather protection are desired. It's suitable for both new and weathered wood.

• Semi-Transparent Finish: Adds color while letting wood texture show
• Fade and UV Resistant: Helps maintain appearance over time
• Damp or Dry Application: Flexible for changing weather conditions

Compared to clear sealers, this stain enhances color and offers more visual uniformity. The tradeoff is that it will partially mask the wood grain.

When you want to completely transform the look of your outdoor wood while ensuring waterproof protection, a solid color stain is the way to go. This type of product is perfect for covering imperfections or creating a bold, uniform appearance.

Thompson’s WaterSeal Solid Color Stain in Sedona Red offers strong color coverage and reliable weatherproofing. It's best for decks, fences, or furniture where a dramatic color change or full coverage is desired.

• Solid Color Finish: Hides wood grain for a consistent, bold look
• UV and Water Protection: Shields wood from sun and moisture
• Easy Application: Can be used on damp or dry wood

Compared to transparent or semi-transparent options, this product prioritizes appearance and coverage. The tradeoff is that it will fully mask the natural wood grain.