Seal Your Charleston Deck Once. It's 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 Charleston Deck Needs Penetrating Sealer, Not Stain
The average top-coat lasts 2–3 years. DuraSeal lasts 10x longer.
Stains & Top-Coat Sealers
- Sit on the surface as a film
- UV and moisture break them down in 2–3 years
- Peel, flake, and need constant re-application
- Trap moisture — feeding rot underneath
- New wood must cure 30–90 days first
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
- Protects against moisture, UV, mold & mildew
- Applies to brand-new pressure-treated wood immediately
- One application. 25-year warranty. Done.
How It Works
Free On-Site Quote
A 45-minute visit at your Charleston home. 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.
Lowcountry Salt & Humidity
Lowcountry salt air and humidity feed rot and mildew in unprotected wood. Sealed decks shed both.
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
"Trevor was wonderful, great customer service. The entire application process was quick and smooth."Chocka Chidambaram · Verified Google Review
"Phenomenal job and experience. 5 star. Recommend this company and this service technician. Extremely professional."Donna Barrera · Verified Google Review
"Logan just treated our house and did an excellent job. I highly recommend Logan and DuraSeal."Monty Eberhart · Verified Google Review
Charleston 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 Mount Pleasant, Summerville, James Island, and Daniel Island. Or call and we'll set it up for you.