Homeowners seeking a clear, protective finish for redwood decks need options that guard against moisture, UV damage, and wear while preserving the wood’s natural beauty. This guide reviews top clear sealers and stains, focusing on durability, ease of application, and long-term maintenance. Each product highlighted here is available on Amazon and designed to keep redwood decks looking vibrant season after season.
| Product | Brand | Size | Key Benefit |
|---|---|---|---|
| Thompson’s WaterSeal Clear Wood Sealer | Thompson’s | 1 Gallon | Year-round protection in one coat; waterproofing performance |
| DEFY Extreme Crystal Clear Outdoor Wood Stain and Sealer | DEFY | 1 Gallon | UV protection with zinc nano-technology; clear finish |
| Flood FLD521 Redwood CWF-UV Exterior Clear Wood Finish | Flood | 1 Gallon | Translucent penetrating protection against moisture |
| Olympic WaterGuard 1 gal. Clear Exterior Sealer | Olympic | 1 Gallon | Ready-to-use clear sealant for new and weathered wood |
| Thompson’s WaterSeal Multi-Surface Waterproofer Stain (Clear) | Thompson’s | 1 Gallon | Waterproofing stain that preserves texture and color |
Thompson’s WaterSeal Clear Wood Sealer
Thompson’s WaterSeal Clear Wood Sealer provides year-round protection in a single coat, making it a practical option for redwood decks. This sealer helps prevent water damage and exceeds industry standards for wood waterproofing (ASTM-D4446). The clear finish enhances the wood’s natural grain while delivering durable moisture resistance, supporting long-term deck integrity with minimal upkeep.
Thompson’s WaterSeal Multi-Surface Waterproofer Stain, Clear
This clear waterproofing stain enhances redwood decks by delivering a fade-resistant finish that hides grain while preserving texture. Its polymers offer UV resistance to reduce color fading, helping maintain a natural look over time. Suitable for exterior wood and other surfaces, it provides a balance of protection and aesthetic clarity for outdoor decks.
DEFY Extreme Crystal Clear Wood Stain and Sealer
DEFY Extreme Crystal Clear combines stain and sealer in one coat to protect redwood from moisture and UV damage. Its zinc nano-particles help block UV rays, preserving the wood’s natural color and beauty. Application is versatile—sprayer, brush, or roller—and maintenance involves reapplication when water absorption becomes noticeable. Coverage typically ranges with surface type, but the formula emphasizes long-term durability in outdoor exposure.
1 gal Flood FLD521 Redwood CWF-UV Exterior Clear Wood Finish
Flood’s Redwood CWF-UV is a translucent, penetrating acrylic-oil emulsion designed to shield wood from moisture, mildew, and UV sun damage. Its clear finish allows the wood’s natural grain to show through while providing durable protection. This option is well-suited for redwood decks that want a natural look with strong weather resistance and straightforward soap-and-water cleanup.
OLYMPIC WaterGuard 1 gal. Clear Exterior Sealer
Olympic WaterGuard is a ready-to-use clear wood sealant designed for new, weathered, or previously sealed wood. It provides a durable water-based waterproofing layer that helps protect against moisture infiltration while allowing the natural texture of redwood to remain visible. Coverage estimates are typical for one gallon, with ongoing maintenance based on exposure and wear.
Thompson’s WaterSeal Multi-Surface Waterproofer Stain, Clear (Quart)
This quart-size option mirrors the gallon version in clear waterproofing performance and UV fade resistance. It’s suitable for smaller decks or touch-ups where a discreet, clear finish is desired to maintain the natural redwood look while providing reliable moisture protection.
Buying Guide: Key Purchase Considerations
- Wood type and condition: Redwood responds well to clear sealers, but worn or weathered wood may require cleaners or prep before sealing to ensure proper adhesion.
- UV and moisture protection: Look for products with UV-blocking additives and water-repellent formulas to minimize graying and water damage over time.
- Finish appearance: Clear finishes range from nearly invisible to slightly tinted. For redwood, a true clear or lightly tinted formula helps retain the wood’s natural grain while offering protection.
- Application method: Decide between sprayer, brush, or roller based on deck size and accessibility. Some products are optimized for all methods, while others perform best with certain tools.
- Maintenance interval: Check reapplication guidance based on wear and water absorption. High-traffic decks may require more frequent maintenance.
- Environmental and safety considerations: Consider low-VOC formulas if indoor exposure or indoor air quality is a concern; ensure proper ventilation during application.
- Compatibility with existing finishes: If re-coating, verify compatibility with previous coatings to avoid peeling or poor adhesion.
- Coverage expectations: Large decks require higher quantities; check label coverage per gallon to plan purchases and timelines.
Clear sealer choices for redwood decks balance moisture protection, UV resistance, and a natural look. The products above provide options across price points and performance profiles, allowing homeowners to select based on climate, deck usage, and maintenance preferences.