Seal Your Upstate Lake Dock Once. Protected for 25 Years.
Don't stain it — DuraSeal it. Our penetrating sealer soaks deep into the wood and fossilizes it from the inside, backed by a 25-year transferable warranty. No peeling. No flaking. No re-staining every 2–3 years.
Free, no-obligation quote — good for one full year.
Why Your Dock Needs Penetrating Sealer, Not Varnish
Docks live the hardest life wood can live — water below, sun above. Seal it once, from the inside.
Stains & Marine Varnishes
- Sit on the surface as a film
- Sun and water strip them within a few seasons
- Peel, flake, and need constant re-coating
- Trap moisture against the wood — feeding rot at the waterline
- New dock wood must cure before coating
The DuraSeal Difference
- Soaks 4–6 inches into the wood and chemically bonds
- Fossilizes the structure from the inside
- Wood still breathes — no trapped moisture, no rot
- Stands up to constant water, sun, and weather
- Applies to brand-new dock wood immediately
- One application. 25-year warranty. Done.
How It Works
Free On-Site Quote
A 45-minute visit at your lake property. Exact price, no obligation — and the quote is good for a full year.
Clean & Seal
We pressure-wash your deck, then apply the penetrating sealer that absorbs deep into the wood fibers.
Protected for 25 Years
If the sealant ever fails to protect the way we said it would, we come back and fix it at no charge.
Beats Re-Staining on Cost
Most homeowners come out ahead in 2–3 years compared to the re-stain cycle — then save for decades.
Built for the Waterline
Lake water below, UV above — dock wood takes it from both sides. Penetrating sealer protects from the inside out.
65+ Years of Proof
The sealing technology has been protecting structures for over six decades, with wood-rot studies to back it.
New Deck? Perfect Timing.
Unlike stain, DuraSeal applies to new pressure-treated wood immediately — protect it from day one.
A 25-Year Warranty That Transfers With Your Home
"If our sealant fails to protect your surface the way we said it would, we come back and fix it at no charge — for up to 25 years." Selling your house? The warranty goes to the new owner — a real selling point.
What DuraSeal Customers Say
"The dock looks brand new."Steve Wallett · Verified Google Review
"Tyler was exceptional! Very personable and good at his job. He was as excited as I am at the final result. It looks phenomenal"Barbara Hill · Verified Google Review
"Parker has been a pleasure to work with. Patient, well spoken and friendly. The deck looks great"Sally Shields · Verified Google Review
Greenville Estimate Slots Fill Fast in Sealing Season
Book your free on-site quote now — it takes 45 minutes, costs nothing, and the price is locked for a full year. Proudly serving Lake Keowee, Lake Hartwell, and the Upstate lakes. Or call and we'll set it up for you.