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Koopman Lumber - Sharon

Marine‑Grade Clear Flat Water‑Based Wood Sealer – 1 gal Premium Outdoor Protection

SKU #1829522 Model #SO0005 UPC #810163500046
Seal Once Marine‑Grade Clear Flat Water‑Based Wood Sealer – 1 gal Premium Outdoor Protection

SEAL ONCE

Price listed is for a single item. Must be ordered in multiples of 4
$ 45.99 EA
Koopman Lumber - Sharon Sharon, MA
Available at 3 other locations
  • 28 available for special order at
  • 28 available for special order at
  • 28 available for special order at
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Available for Special Order. Pickup In store in 3-8 days.

Description

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Descriptions are AI-generated. For accurate measurements, please call the store to confirm.

Discover Seal Once Marine‑Grade Clear Flat Wood Sealer, a high‑performance, water‑based coating engineered for exterior timber. This fully transparent formula dries to a matte sheen, allowing the natural grain to shine while forming a resilient, water‑repellent skin that endures harsh weather for up to a decade. Apply it with a brush, roller, or sprayer for a seamless, paint‑ready surface that stays clear year after year.

Why choose this sealer? Its advanced polymer blend creates a breathable barrier that blocks moisture without trapping it, preventing rot, warping, and UV‑induced fading. The low‑VOC composition meets eco‑friendly standards while delivering a professional‑grade finish that enhances durability and extends the life of decks, fences, and marine‑exposed wood.

Key Features & Benefits:
  • Water‑Based Formula: Easy cleanup with soap and water, low odor, and compliance with strict environmental regulations.
  • Marine‑Grade Protection: Formulated for salt‑spray environments, ideal for docks, boat decks, and coastal structures.
  • Fully Transparent, Flat Sheen: Preserves the authentic look of wood, offering a subtle, non‑glossy appearance.
  • Water Repellent & Breathable: Stops water penetration while allowing wood to release internal moisture, reducing swelling and cracking.
  • Long‑Lasting Coverage: One gallon blankets 250‑350 sq ft, delivering up to ten years of protection before re‑application is needed.

Elevate your outdoor wood projects: With Seal Once's premium sealer, you gain a dependable shield that maintains the beauty of natural timber without compromising on performance. Its quick 30‑minute recoat window and 24‑hour full cure time keep projects moving forward, while the flat, clear finish blends invisibly with any design. Trust this marine‑grade solution to protect, preserve, and perfect every wooden surface you cherish.