--- product_id: 337696429 title: "SEAL-ONCE Marine Ready Mix Wood Sealer and Stain, Coastal Gray, 1 Gallon" brand: "seal-once" price: "€ 254.43" currency: EUR in_stock: true reviews_count: 8 category: "Seal Once" url: https://www.desertcart.hr/products/337696429-seal-once-marine-ready-mix-wood-sealer-and-stain-coastal store_origin: HR region: Croatia --- # UV-stable marine-grade protection Coastal Gray penetrating stain 10-year water resistance warranty SEAL-ONCE Marine Ready Mix Wood Sealer and Stain, Coastal Gray, 1 Gallon **Brand:** seal-once **Price:** € 254.43 **Availability:** βœ… In Stock ## Summary > πŸ›₯️ Seal your wood in coastal cool β€” protection that lasts, style that ages like fine wine. ## Quick Answers - **What is this?** SEAL-ONCE Marine Ready Mix Wood Sealer and Stain, Coastal Gray, 1 Gallon by seal-once - **How much does it cost?** € 254.43 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/337696429-seal-once-marine-ready-mix-wood-sealer-and-stain-coastal) ## Best For - seal-once enthusiasts ## Why This Product - Trusted seal-once brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Effortless Longevity:** Single application lasts up to 10 years on vertical surfaces and 6 years on horizontal, no peeling or flaking. - β€’ **Eco-Conscious Formula:** Water-based, ultra-low VOC, safe for aquatic life and your outdoor sanctuary. - β€’ **Natural Aging Elegance:** Enhances wood’s natural silver-gray patina while preventing rot, mold, and mildew. - β€’ **Ultimate Marine Shield:** Protects wood from saltwater, UV rays, and moisture with a breathable, flexible barrier. - β€’ **Easy Application & Cleanup:** Fast-drying, penetrates deeply, and cleans up with just soap and waterβ€”no harsh chemicals needed. ## Overview SEAL-ONCE Marine Ready Mix Wood Sealer and Stain in Coastal Gray is a water-based, ultra-low VOC formula designed specifically for high-moisture environments like docks, decks, and piers. It creates a UV-stable, flexible barrier that penetrates wood fibers to protect against saltwater, water damage, and UV exposure. Safe for aquatic life, it offers up to 10 years of protection on vertical surfaces and 6 years on horizontal surfaces with a single application, while allowing wood to age naturally to a rich silver-gray finish. ## Description SEAL-ONCE Marine Ready Mix Wood Sealer and Stain, Coastal Gray, 1 Gallon | Waterproofer & Stain, Water-Based, Ultra-low VOC formula, For high-moisture areas, Protects wood docks, decks & piers - desertcart.com Review: Repells Water and Looks Great - Stain applies well but prepare for spills and clean up. Protect areas you don't want covered. It's a watery type product so it will drip each time you go from a pan or the bucket to the wood structure. Quality of the stain seems great so far. I love the grey color. Applied 2+ coats and the results so far have been positive. Water runs off the deck so it should be well protected for years. Very pleased with this stain. Delivery from desertcart was prompt (next day as I recall). Made ordering so much easier than running to the local box store. Review: So far seems to work great. Hoping it last - Using this for my home wood project around my pool. Appears to be a legit product. If using more than one coat, let it dry, then apply another coat. Do not let the coat seal, because once it dries after a few hours, it will repell itself and no longer be absorbed by the wood ## Features - MARINE SEALANT: Our liquid formula creates a UV-stable coating for protection against the elements, saltwater spray, and water damage. Marine is a protector for outdoor decks, thermally modified wood, and boat docks. Marine is safe for use over open water and is non-hazardous to aquatic life. ** This product is NOT intended for hardwoods such as ipe, mahogany and teak. ** - DECK STAIN: It's water-based, ultra-low VOC, enhancing the extended life of your flooring, dock, and porch. The paint forms a water-resistant shield around wood fibers at the cellular level to help preserve the natural color - WATERPROOF WOOD SEALER: The wood used on boat docks, decks, and retaining walls near rivers, lakes, oceans, and ponds is subjected to constant moisture. We crafted a sealer, remove stain, and finish all in one, specifically for these installations - WOOD SEALANT: Our fast-drying protector penetrates wood below the surface, coating the wood fibers at the cellular level, which creates a long-lasting, flexible, breathable barrier. It provides a no-fuss, easy clean-up with soap and water - SEAL-ONCE: Our user-friendly wood sealers and stains are an effective way to protect your lumber or concrete against water damage. When you use Seal-Once, you have the satisfaction of knowing our products will not harm pets, plants, or people - NATURAL AGING PROCESS: Marine enables the wood to age naturally without decay, morphing to a rich silver-gray look over time while maintaining structural integrity and preventing wood rot, mold, and mildew - LONG-LASTING PROTECTION: Warranted to prevent long-standing water accumulation for up to 10 years on vertical surfaces and 6 years on horizontal surfaces with a single application that will not peel or flake ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B098Z2PDR8 | | Base Material | Wood | | Best Sellers Rank | #3,044 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #9 in Household Stains | | Brand | Seal-Once | | Brand Name | Seal-Once | | Coating Description | Water-based | | Color | Coastal Gray | | Compatible Material | Wood | | Container Type | Jug | | Coverage | covers up to 250 sq. ft. per gallon | | Customer Reviews | 4.3 out of 5 stars 101 Reviews | | Finish Types | Penetrating | | Included Components | Outdoor Stain | | Item Dimensions | 9 x 7 x 9 inches | | Item Weight | 9 pounds | | Liquid Volume | 1 gallons | | Manufacturer | U C COATINGS | | Manufacturer Part Number | SOMARINEWOOD | | Material | Polyurethane | | Material Type | Polyurethane | | Model Name | Marine | | Model Number | Marine | | Number of Items | 1 | | Opacity | 0.5 inches | | Paint Type | Water Based | | Recommended Uses For Product | Protecting wood docks, decks, piers, and other wood surfaces in high-moisture areas around fresh or salt water | | Size | 1 Gallon | | Style Name | Outdoor | | Surface Recommendation | Decks, Wood | | UPC | 759126905156 759126569426 | | Unit Count | 128 Fluid Ounces | | Warranty Type | Time-based warranty | ## Product Details - **Brand:** Seal-Once - **Color:** Coastal Gray - **Material:** Polyurethane - **Model Name:** Marine - **Surface Recommendation:** Decks, Wood ## Images ![SEAL-ONCE Marine Ready Mix Wood Sealer and Stain, Coastal Gray, 1 Gallon - Image 1](https://m.media-amazon.com/images/I/71h-LYfZNDL.jpg) ![SEAL-ONCE Marine Ready Mix Wood Sealer and Stain, Coastal Gray, 1 Gallon - Image 2](https://m.media-amazon.com/images/I/81JEgAupg6L.jpg) ![SEAL-ONCE Marine Ready Mix Wood Sealer and Stain, Coastal Gray, 1 Gallon - Image 3](https://m.media-amazon.com/images/I/71-kHKQX+IL.jpg) ![SEAL-ONCE Marine Ready Mix Wood Sealer and Stain, Coastal Gray, 1 Gallon - Image 4](https://m.media-amazon.com/images/I/81JAh4NPp2L.jpg) ![SEAL-ONCE Marine Ready Mix Wood Sealer and Stain, Coastal Gray, 1 Gallon - Image 5](https://m.media-amazon.com/images/I/91jIbWCF5cL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Can it be used on green treated lumber** A: Pressure treated lumber has to be dry. **Q: Can you use a regular wood stain after applying?** A: Yes the clear MARINE can be painted or stained. Or you can purchase a tint for SEAL-ONCE and use the MARINE as a sealer and stain. MARINE Features: β€’ Clear formula can be painted or stained after treatment β€’ Tinted formula provides additional UV protection β€’ Available in 11 semi-transparent tint colors β€’ Eco-friendly, Non-toxic; will not harm pets, plants, people or marine life β€’ Ultra-low VOC, Water based β€’ Can be applied around or over fresh or salt water β€’ Flexible, breathable barrier, Stabilizes & protects wood β€’ Prevents warping, cupping, wood rot & decay β€’ Resistant to salt water spray β€’ Prevents mold, mildew & algae growth β€’ Soap and water cleanup **Q: I want to use this on a 6x6 wood beam at the opening to my walk-in shower (floor to ceiling). No direct shower spray. Will this seal it?** A: Yes you may use it for this specific application. As suggested in a comment down bellow, you would want to make sure that it is fully cured before using the shower. Typically it would take 48 hours to cure but it may take longer depending on the environment. **Q: does this work for the interior of a sauna , safe to sit on?** A: It dries to a hard, smooth finish, is non toxic and nice to look at. Would be safe to sit on...other types of recreation may require caution. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Repells Water and Looks Great *by P***C on May 5, 2025* Stain applies well but prepare for spills and clean up. Protect areas you don't want covered. It's a watery type product so it will drip each time you go from a pan or the bucket to the wood structure. Quality of the stain seems great so far. I love the grey color. Applied 2+ coats and the results so far have been positive. Water runs off the deck so it should be well protected for years. Very pleased with this stain. Delivery from Amazon was prompt (next day as I recall). Made ordering so much easier than running to the local box store. ### ⭐⭐⭐⭐⭐ So far seems to work great. Hoping it last *by D***N on April 22, 2026* Using this for my home wood project around my pool. Appears to be a legit product. If using more than one coat, let it dry, then apply another coat. Do not let the coat seal, because once it dries after a few hours, it will repell itself and no longer be absorbed by the wood ### ⭐⭐⭐⭐ Outdoor picnic table . Worked great *by C***R on July 7, 2026* Required 2 coats ## Frequently Bought Together - SEAL-ONCE Marine Ready Mix - 1 Gallon Penetrating Wood Sealer Waterproofer & Stain (Coastal Gray). Water-Based, Ultra-Low VOC Formula for high-Moisture Areas to Protect Wood Docks, Decks & Piers. - Linzer 3121 0400 Stain Waterproofing Brush, 4 in.,Brown,WM 3121-0400 - Pro Grade, Paint Brushes, 5-Piece, Paint Brush Set: Flat & Angle Brushes for Latex and Oil Paints, Stains, Interior & Exterior Home Improvement --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/337696429-seal-once-marine-ready-mix-wood-sealer-and-stain-coastal](https://www.desertcart.hr/products/337696429-seal-once-marine-ready-mix-wood-sealer-and-stain-coastal) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-31*