Aluminum Flood Barriers in Key West

Hammerhead™ aluminum flood planks, custom-sized to your openings, built in the USA, and ready to deploy before the next storm.

USA-Made | 5,000+ Projects | Sourcewell & TIPS contracts | Free Property Assessments

Key West’s low elevation and island geography leave nearly the entire city exposed to storm surge and tidal flooding. With water on all sides, ground-level doorways and garages need protection that can be deployed quickly and reused each season.

The Hammerhead™ Aluminum Flood Plank System

Hammerhead protecting window

Hammerhead is a stop-log flood barrier with permanent U-Channel posts mounted on either side of an opening, and rigid aluminum planks slide in and tighten down to create a watertight wall when a storm is coming. Between storms, the planks store compactly and the low-profile posts stay in place.

  • Custom-sized to every opening: doorways, garages, lanais, loading bays
  • 6063 T-6 extruded aluminum plus stainless steel hardware: corrosion-resistant, USA-made
  • Patented SureGasket™ + AlumiSeal™: dual sealing for a tight, watertight seal
  • Rated to about 6 ft with center-post extensions for wider spans
  • Deploys in minutes by unskilled labor; planks slot in and clamp down
  • Built for high wind and debris: fixed posts and clamped planks handle the stresses coastal storms bring

 

For protection above plank height, on larger openings, or around an entire perimeter, Flood Barrier Systems offers a full line of complementary products.

PREPARE IN ADVANCE

Get Key West storm-ready before hurricane season

The best time to plan flood protection is before a storm is named. Hammerhead posts install once and stay in place, so when a warning is issued your planks slot in and tighten down in minutes, no scramble for sandbags, no last-minute contractors.

  • Assess early: book a free property assessment.
  • Install posts now: the permanent posts go in on a calm day, not the day before landfall.
  • Store planks on-site: compact storage keeps everything ready to deploy.
  • Deploy fast: slot, tighten, and clamp when a storm approaches.

 

Waiting until a storm is in the forecast often means limited availability. Preparing in advance means you are protected the moment you need it.

WORK DIRECTLY WITH THE MANUFACTURER

Made by the people who engineer it

Flood Barrier Systems is Garrison Flood Control. That means direct access to the team that designs and manufactures Hammerhead: expert product guidance, genuine parts and seals, professional installation by our Florida team, and fast delivery from our regional Pompano Beach, Florida warehouse.

EXPLORE THE FULL FLOOD PROTECTION LINE

More than flood planks: complete protection for Key West Properties

Hammerhead aluminum planks are ideal for doorways, garages, and lanais. Some properties also need to protect sloped ramps, larger openings, or an entire perimeter. Flood Barrier Systems offers a full range of flood protection products, all from one manufacturer:

Mayim Flood Barrier™: a modular, interlocking barrier for large-scale protection of buildings, roadways, and industrial facilities. Units are available in 20”, 30” and 40” of protection.

YellowFIN

YellowFIN™ Flood Panels: a refined composite flood panel system with sealed aluminum framing for openings where appearance and performance both matter.

Mako

MAKO Inflatable Flood Barrier: Create a strong, reliable seal across entryways in minutes with a marine-grade inflatable flood barrier.

BlueFIN

BlueFIN™ Interconnecting Flood Wall Barrier: a modular flood panel wall for perimeter protection around homes, utilities, and infrastructure, built to resist hydrostatic and hydrodynamic pressure.

Guppy

Guppy™ Heavy-Duty Water-Filled Barrier: a reusable, water-filled barrier for fast, temporary protection of larger areas and infrastructure.

Stingray Self-Rising Water Dam: a localized dam that activates automatically as floodwaters rise, with no power or manual setup required.

Oyster

Oyster™ Self-Rising Flood Gate: a water-activated gate for sloped garage ramps, driveways, and loading docks that lies flat for everyday access and rises automatically as floodwater fills it, with no power required.

Serpent Flood Barrier: Quickly create a flexible line of defense with a durable, air-filled flood barrier built to protect larger openings and perimeter areas.

Minnow Water-Activated Sandbags: Build a fast, reliable flood barrier with lightweight sandbags that expand on contact with water.

Not sure which system fits your Key West property? Our team can recommend the right product, or the right combination, during a free assessment.
LOCAL FLOOD CONTEXT

Flood risk in Key West, Monroe County

Hurricane Irma in 2017 brought damaging surge and flooding to the Florida Keys, and Key West’s low-lying streets remain vulnerable to surge and heavy rain during every hurricane season. Preparing openings in advance is essential given how quickly conditions can change on an island.
Much of Key West falls within FEMA VE and AE zones across most of the island, with flooding driven by the surrounding Atlantic and Gulf waters and the island’s very low elevation. Most Key West properties sit in VE or AE zones with NFIP requirements, and documented mitigation is often part of resilience planning. Confirm with your county or insurance for NFIP specifics.
LOCAL PROOF

Hammerhead projects near Key West

Across the Florida Keys and South Florida, Garrison’s Hammerhead planks protect ground-level openings against the surge and tidal flooding that low island elevations invite.
Case Study
Process

How it works in Key West

1. Free assessment: we measure your openings and evaluate flood exposure across the Florida Keys

2. Custom quote: the right number of planks and posts for each opening.

3. Professional installation: our Florida technical team installs, or supports your DIY install.

Protect your Key West property before the next storm Free assessment. USA-made Hammerhead planks. Ready when you need them.

FAQs

Do you install flood barriers in Key West?
Yes, Garrison provides professional installation across the Florida Keys including Key West and surrounding Monroe County, and ships nationwide from our Florida warehouse.
When should I get flood barriers for my Key West home?
Before hurricane season if possible. Posts install ahead of time so planks deploy in minutes when a storm approaches. Request a free assessment to plan early.

How high can Hammerhead protect?

Standard protection is up to about 6 ft, customizable by the number of planks, with center posts for wider spans. For deeper water we offer additional Garrison systems.

What areas of Key West do you serve?
We serve Old Town, New Town, Casa Marina, the Truman Annex, and Bahama Village and the wider Monroe County area.
Do you serve the Florida Keys?
Yes. Garrison ships throughout Florida and can support Key West and Monroe County property owners with product guidance and installation planning.
How do barriers help on a low island like Key West?
A sealed barrier at each ground-level opening keeps surge and tidal water out, and the reusable planks store compactly between storms.