Updated October 2026. Materials and permit notes checked against the EPA, the U.S. Army Corps of Engineers and the 2026 Florida Statutes, read October 29, 2026.
The best decking for a boat dock is the one that handles constant water, sun and foot traffic where you live: pressure-treated pine rated for water contact on a budget, composite or PVC for low upkeep, and dense tropical hardwood if you want real wood that lasts. Check permits first. In Florida, as of October 2026, a private dock can be exempt from a state permit only under size limits of 500 or 1,000 square feet over the water.
Jump to: 🪜 Materials · 💲 Compare · 📍 Permits · ⏱️ Upkeep · 🏠 Waterfront homes · ❓ FAQ
Key takeaways
- Dock boards live wet; pick lumber or composite made for water contact, not a standard backyard deck board.
- Florida’s exemption covers docks up to 500 sq ft over water in Outstanding Florida Waters, or 1,000 sq ft elsewhere (s. 403.813, 2026 Florida Statutes).
- Work in waters the Army Corps regulates may need a federal permit; its 2026 general permit set (NWPs) was published in January 2026.
- CCA-treated wood was phased out of homeowner uses in December 2003 (EPA); older docks may still have it.
A dock deck has a harder life than any patio. It gets soaked from below, baked from above and scraped by coolers, boots and boat lines. Pick the wrong board and you’re replacing warped planks in five summers. Pick the right one and you mostly hose it off. Here’s how to choose, in plain terms.
What are your decking options for a boat dock?
Pressure-treated pine. It’s the cheapest and easiest to find. For a dock, look at the end tag: it should say the lumber is treated for ground contact or for use in or near water, not just “above ground.” Treated pine moves as it dries, so expect some checking and cupping. Plan on a stain or sealer every couple of years.
Composite. Made from wood fiber and plastic, it won’t rot or splinter, and it doesn’t need sealing. Some boards get hot in full sun, and lighter colors help. Not every brand is rated for docks, so read the warranty before you buy. Decks by E3 has a practical rundown on choosing composite decking on a dock, including which product lines are built for water.
PVC (cellular vinyl). No wood at all, so it shrugs off moisture and mold. It’s lighter than composite and usually costs more. It can expand and contract with heat, so gaps matter.
Tropical hardwoods (ipe, cumaru and similar). Very dense, very hard and naturally resistant to rot and insects. They’re heavy, tough to cut and pricey, but a well-built hardwood dock can outlast the pilings.
Aluminum or grated decking. Common on floating docks and in places that ask for light to reach the water below. It’s durable and doesn’t rot, but it’s not soft under bare feet.
How do dock decking materials compare?
| Material | Upfront cost | Upkeep | Feel and look | Main drawback |
|---|---|---|---|---|
| Pressure-treated pine (water-contact rated) | Lowest | Seal or stain every 1–3 years | Natural wood, can splinter | Warping and checking over time |
| Composite | Medium to high | Wash; no sealing | Wood-like, consistent color | Can run hot; check dock warranty |
| PVC | High | Wash; no sealing | Light, smooth | Thermal movement; cost |
| Tropical hardwood | High | Oil if you want to keep the color | Rich wood, very hard | Heavy, hard to work, cost |
| Aluminum or grating | Medium to high | Very low | Industrial, lets light through | Hot and hard underfoot |
Costs move a lot by region, board size and labor, so get two or three written quotes. Our guide on Choosing the Right Deck Builder: Tips for Finding a Reliable Contractor lists what to ask.
Color matters more on a dock than on a patio. Dark boards soak up heat, which you’ll notice the first July afternoon you walk out barefoot. Light grays and tans stay cooler and hide salt spots. Board pattern is mostly style: straight runs are easiest and cheapest, while diagonal or picture-frame borders add labor. For layout ideas, see How to Choose the Perfect Design for Your Custom Deck Based on Your Needs.
Have an old dock? The EPA says manufacturers stopped making chromated arsenical (CCA) treated wood for homeowner uses in December 2003. It doesn’t require you to remove older structures, and it notes that a penetrating stain or sealer applied regularly may reduce leaching. If you replace old boards, ask your local waste agency how to dispose of them; don’t burn them.
Do you need a permit to build or redeck a dock?
Often, yes, and the rules depend on where your water is. Treat this as general information, not legal advice. Call your city or county building department before you buy materials.
- Federal: The U.S. Army Corps of Engineers regulates work in many waterways and wetlands. Its regulatory page says its 2026 set of general permits (NWPs) was published in the Federal Register in January 2026: 56 reissued and one new. Your local Corps district can tell you whether your dock fits one of them, a regional permit or an individual permit.
- Florida example: Under s. 403.813(1)(b), 2026 Florida Statutes, a private dock can be exempt from a state permit if it has 500 square feet or less over the water in Outstanding Florida Waters (1,000 square feet elsewhere), sits on pilings or floats, doesn’t block water flow or navigation, is used for recreational boat mooring, and is the only exempt dock along 65 feet of shoreline. The state can still act if an exempt dock causes water pollution.
- Local: Counties, cities and HOAs can add setbacks, height limits and design rules. A building permit may still be needed even when a state exemption applies.
Replacing deck boards on an existing permitted dock is often simpler than building new, but don’t assume. One phone call costs less than tearing out a noncompliant dock before a sale.
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Buy a home →How do you keep dock decking in good shape?
Maintenance should be a top priority, even with “low-maintenance” boards. A simple routine:
- Rinse salt, bird droppings and fish scales off weekly in season.
- Scrub with a soft brush and a deck cleaner made for your material twice a year.
- Check for loose screws, popped nails and soft spots after every big storm.
- Reseal or stain wood boards when water stops beading on the surface.
- Look at the pilings and hardware, not just the boards. Corroded fasteners fail first.
Add lighting on your dock for safety, too. Low step lights along the edges and at the ladder help you see the drop to the water after dark, and solar options skip the wiring. Leftover boards make good benches, storage boxes and planters; see Things That You Can Make with Decking Boards.
Does a dock add value to a waterfront home?
For many waterfront buyers, deep-water access and a usable dock are a big part of why they’re looking at the house at all. A rotten dock reads as a repair bill. Curb appeal counts on the water side too: in NAR’s March 2023 Remodeling Impact Report on outdoor features, 97% of REALTORS® said curb appeal is important in attracting a buyer. If you’re curious about the trend, read Houses On Water Are Getting More Popular: See Why And How You Can Afford One.
Selling? Gather the dock permit, any exemption letter and repair receipts before you list. Buyers’ inspectors often look at detached structures closely; our guide on what inspectors rarely tell you about detached structures explains what they check. Known problems belong in your disclosures; this guide to seller disclosures covers the basics.
Beycome lists homes on the major home search sites and the MLS through flat fee MLS packages from $99, with $0 Beycome fee at closing, in 17 states and DC. Closing in Florida? Beycome Title handles Florida closings for $99 prepaid at checkout, and Texas for a $299 settlement fee per side. Michigan, Ohio, Illinois and Indiana are coming.
Buying a place on the water instead? Beycome’s buyer program is open to every buyer on homes listed by other agents. There’s no upfront fee; Beycome keeps 1% of the price (minimum $1,499) and credits the rest of the buyer-agent commission at closing, with lender approval. The credit can’t apply where no buyer-agent commission is offered, like most FSBO homes, or on homes listed by Beycome sellers. Then plan a slow weekend on the water; our Have A Relaxing Long Weekend In Miami With These 4 Insider Tips has ideas.
Boat dock decking: questions
What is the longest-lasting decking for a dock?
Dense tropical hardwoods, PVC and dock-rated composites usually outlast pressure-treated pine. Lifespan depends on the climate, the build and upkeep.
Can I use regular pressure-treated deck boards on a dock?
Check the tag. Boards for docks should be treated for ground contact or use in or near water, not only above-ground use.
Is composite decking good for docks?
Many lines are, but not all. Pick a product whose warranty covers docks and water exposure, and choose a lighter color to limit heat.
Do I need a permit to replace dock boards?
It depends on your state, county and waterway. Call your local building department first; a federal or state permit may also apply to new work.
How big can a dock be without a Florida state permit?
Under s. 403.813(1)(b), up to 500 square feet over water in Outstanding Florida Waters or 1,000 square feet elsewhere, if it meets the other conditions. Local permits may still apply.
What color decking stays coolest on a dock?
Lighter colors, such as light gray or tan, absorb less heat than dark browns.
Permit information is general, not legal advice; rules vary by state, county, waterway and HOA. Florida exemption from s. 403.813(1)(b), 2026 Florida Statutes; federal permit note from the U.S. Army Corps of Engineers regulatory page; CCA note from the U.S. EPA; curb appeal figure from NAR’s Remodeling Impact Report: Outdoor Features (March 2023); all read October 29, 2026.
Beycome prices as of October 2026. “$0 at closing” means no Beycome fee at closing; other closing costs still apply. Buyer credit: no upfront fee; Beycome keeps 1% of the price (minimum $1,499); credited at closing with lender approval; not on FSBO homes or homes listed by Beycome sellers. Beycome Title: Florida, Texas, Michigan, Ohio, Illinois and Indiana.
Sources
- The 2026 Florida Statutes, s. 403.813, Permits issued at district centers; exceptions, read October 29, 2026.
- U.S. Army Corps of Engineers, Regulatory Program and Permits, read October 29, 2026.
- U.S. EPA, Chromated Arsenicals (CCA), read October 29, 2026.
- NAR, Remodeling Impact Report: Outdoor Features, March 2023, read October 29, 2026.
- Beycome, listing package features, October 2026.
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