Pilings: what it involves
Pilings hold the whole dock up, and they take the worst of the water. On salt and brackish water around Crystal River, the zone between the low-tide line and the mud is where wood wears fastest: marine borers and rot work there, current scours the bottom, and storm surge shoves the dock sideways. A piling can look fine above the deck and be a fraction of its width a few feet down.
The fix depends on how far it's gone. A sound piling can be wrapped with a plastic sleeve to keep borers out. A damaged piling can sometimes be sistered with a new post bolted alongside. A piling that's lost too much wood, or is leaning badly, gets pulled or cut and replaced, which means driving or jetting a new one in, and that brings state and federal permits into play.
Signs your pilings need attention
- Wood that looks hourglass-shaped near the waterline
- Holes, tunnels or soft spots you can push a screwdriver into
- Cracks running down from the top
- A piling that leans or moves when the dock is loaded
- Bottom scoured away around the base after a storm
If you can see a piling thinning at the waterline, get it checked before the next storm season.
Free EstimateCommon methods
Piling wraps
A plastic or PVC sleeve is sealed around the piling from below the mudline to above high water, cutting off oxygen to borers.
Sistering
A new piling or post is set next to the damaged one and through-bolted so the two carry the load together.
Replacement
The old piling is pulled or cut at the mudline and a new treated piling is jetted or driven in, then the frame is re-bolted.
What permits do pilings need?
New pilings are the part of dock work most likely to need state and federal sign-off. The City of Crystal River's checklist says dock piling installation needs Florida DEP and U.S. Army Corps of Engineers permits or letters of exemption. Florida DEP's dock guide lists free online self-certification of exemption (not available in aquatic preserves), a $100 exemption verification, or a $250 general permit. Wrapping an existing piling is maintenance and usually needs none of that.
- Self-certification
- Free online exemption check (not available in aquatic preserves)
- Exemption verification
- $100
- General permit
- $250; boat lifts and slips can’t sit over seagrass, and no more than two vessels
- Federal
- U.S. Army Corps of Engineers review for work in navigable water
Sources: Florida DEP, Dock Permitting in Florida, Fla. Admin. Code 62-330.427, checked November 2026.
How piling work usually goes
- Inspect at the waterlineEach piling is checked from low water down to the mud, by probe or by a diver.
- Sort themPilings are marked as fine, wrap, sister or replace.
- PermitsNew pilings get DEP and Army Corps paperwork, plus the local building permit.
- Do the workWraps and sisters often happen from the deck; replacements may need a barge or jetting pump.
- Re-bolt the frameBeams are fastened back to the new or repaired pilings and the deck is checked for level.
Ask the contractor to mark each piling on a sketch of your dock with what it needs; it makes comparing quotes easy.
What piling work costs
HomeAdvisor lists replacement pilings at about $300 to $1,600 each including labor, and new pilings in a dock build start around $10 to $15 per foot of material. Access matters: a barge or jetting equipment adds cost when the work can't be done from the deck.
Reference figure, not a quote: HomeAdvisor dock building cost guide, checked November 2026.
Pilings are the cheapest part to fix early and the most expensive to fix late.
Free EstimateWhere piling calls come from
- Crystal RiverKings Bay, the river and its canals
- OzelloSalt marsh water that's hard on wood
- HomosassaTidal river current and storm scour
- YankeetownBrackish water near the Gulf
- Floral CityLake docks where water levels swing
Related services: Dock Repair & Rebuilds, Storm-Damaged Dock Repair, Seawall Repair.
Pilings questions
Do piling wraps really work?
On a sound piling, yes. They keep borers out. They won't save a piling that's already lost most of its wood.
Can a piling be replaced without rebuilding the dock?
Often. The beam is supported, the old piling is cut out, and a new one goes in beside or in place of it.
Is my dock in an aquatic preserve?
Some water near Crystal River, Homosassa and Ozello is. That affects which DEP option applies, so the contractor should check before filing.