South Florida's Most Trusted Flood Barrier System
Protect your home or business with our durable aluminum flood plank barrier system — trusted across Miami, Fort Lauderdale, Hollywood, and beyond.
High-Performance Flood Barriers for South Florida Properties
Aluminum Flood Plank Protection System
Our aluminum flood barrier system is engineered to protect doorways, garages, and other vulnerable entry points from severe water intrusion. Ideal for homes and businesses in Miami, Fort Lauderdale, Hollywood, and surrounding flood-prone areas, this stop log barrier provides reliable defense against rising water and storm surge.
Each system includes U-Channel posts mounted on either side of the opening. When flood conditions approach, waterproof aluminum planks are quickly stacked to the desired height, forming a secure, watertight seal.
Tested to withstand water levels up to 6 feet, our hurricane-rated flood gate is built to handle high-pressure events and flying debris. Whether you’re safeguarding a warehouse, retail location, or residential property, this system delivers proven flood protection in South Florida’s toughest conditions.
Durable Protection
Simple Installation
Fast Deployment
Made in the USA
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For Residential, Commercial, & Industrial Use
Protect Your Property From Flood Damage
- Entryways, Doorways & Window Wells
- Loading Docks & Garage Ramps
- Basement Stairwells & Perimeter Openings
- Commercial Passageways, Walkways & Lobbies
- Flood protection for homes and buildings in Miami, Fort Lauderdale, Hollywood, and surrounding areas
Customized Wall Height
Unlimited Barrier Length
FEMA/NFIP Compliant
Inside vs. Outside Mount Flood Barriers
Choose between inside-mount and outside-mount flood barriers based on your building’s construction, door or window frame type, or design preference. Each system offers effective flood protection and can be custom-fit for homes and commercial properties in South Florida.
Plank Specs:
- Plank Material: 6063 T-6 Aluminum
- Plank Width: Varies Depending on Opening Size
- Plank Weight: 2.016lbs per ft.
- Individual Plank Height: 7.37” (18.7cm)
- Plank Depth: 1.58” (40mm)
- Plank Extrusion Wall Thickness: 0.0787” (2mm)
- Sealing Strip Material: Rubber EPDM
- Tallest Protection Height: 6.14ft (10 planks)
Plank Specs:
- Post Material: 6063 T-6 Aluminum
- Post Height: Varies depending on number of planks
- Post Depth: 3.94” (10cm)
- Post Width: 2.36”
- Post Weight: 3.025lbs per ft.
- Middle Post Width (Double Channel): 5.12”
- Middle Post Depth: 3.94” (10cm)
- Middle Post Weight: 6.05lbs per ft.
- Sealing Material: Rubber EPDM
- Bolts: M12 8.8mm bolt
HammerHead Testing Report
Setup & Installation
Simple & Easy Setup
Mount the Posts – Inside or Outside
- Decide if you prefer to install posts inside your opening or just to the outside of the opening. We tend to prefer outside, if possible, as the wall itself offers some additional support.
- Check that outside rubber seals are facing the wall in the direction that the post is to be installed and that the U-channel opening is facing the opening (ready to receive a plank).
- Use a hammer drill to drill holes for expanding wall anchors (included).
- Insert and expand anchors to mount posts to the wall. It is important that these be inserted into a solid concrete, cinderblock, or cement wall, for greater stability of the system.
Slide in the Aluminum Flood Planks
- When a flood is expected, insert planks into the U channels on either side of the door opening.
- It is important to loosen the tightening bolts and the top locking bracket, in order to get slats into the opening.
- Be sure that rubber seal is facing downwards in order to make a good seal with the ground below. Apply some pressure to the lower slat to create a good seal.
- Continue inserting slats until all flood barrier planks are in position, ready for tightening. These provide secure flood protection once sealed.
- Note: If reflective warning tape was selected with your order, place the slat with tape last (at the top).
Seal the System Using Allen Wrench
- Use the included Allen wrench to tighten flood planks into position and against the internal rubber seals.
- Insert top locking clamps into the post top slot. Use the Allen wrench to tighten down the clamps and to apply pressure to flood planks below, enhancing the seal between slats.
- Use the tightening bolts on the posts to tighten down the planks within the U-channel and to ensure a seal with the neoprene strips within the channel.
- When a flood is over, simply remove planks in the reverse order, clean off any debris, dry and store your flood barrier for future use.
Stop Floods Before They Start – Better Than Drainage
Looking for drainage solutions in South Florida? At A1 Flood Protection, we offer something better: engineered flood barriers that prevent water from entering in the first place.
From aluminum flood plank systems to inflatable flood tubes and self-rising water dams, our products are designed to protect homes and businesses from heavy rain, storm surge, and rising tides—especially in areas where drainage systems fall short.
- Serving Brickell, Downtown Miami, Fort Lauderdale, Aventura, and beyond.
- Don’t rely on outdated drainage—get proactive flood protection.
Traditional drainage systems often struggle during intense storms. That’s why our waterproof garage panels, self-rising water dams, and aluminum flood plank barriers offer more reliable protection for homes and commercial buildings in places like Hialeah, Kendall, and Downtown Miami. Whether you’re securing a glass storefront, a parking garage, or your home entrance—A1 Flood Protection is your best line of defense.
Flood Barrier System Installed on Commercial Glass Front in South Florida
FAQ
Frequently Asked Questions
Are there any tools or resources needed when deploying the Hammerhead™ Barrier?
For initial installation and to attach support posts to either side of the opening to be protected, have a hammer drill ready to drill the necessary holes for the expanding mounting bolts. flood protection
When installing planks in advance of a flood, use our included Allen wrench to tighten down planks and to secure the upper locking plate.
What is the Hammerhead™ Flood Barrier made out of?
The Hammerhead™ aluminum flood barrier is manufactured using high quality extruded 6063 T-6 Aluminum planks and posts and casted fitting. Hardware is made from stainless steel. Components are designed to be durable as well as weather and rust resistant. flood protection
How is a seal created with the ground?
The lower Hammerhead™ flood plank has rubber EPDM seal, which creates a strong seal with the ground below. Some consideration should be given to uneven ground surfaces as the plank is inflexible and while there is some flexibility to the EPDM seal, the ground should be patched and relatively level to achieve a good seal off.
In situations where there are pavers in sand, gravel, or dirt as a subsurface, it is important to add a concrete footer underneath the Hammerhead bottom rail to ensure a good seal.
This footer should extend across the entire width of the barrier, including the U-Channel Posts.
The footer should be positioned right up against your structure, to ensure a good connection and seal off. If the footer is being placed between two property walls, make sure that it is positioned to abut these walls to create a secure seal. flood protection
What level of water can these panels protect against?
The Hammerhead™ aluminum flood barrier can handle floods up to 6ft, with each plank measuring just under 8” in height.
Order barriers with the number of planks you need to achieve the protection height you need for your specific scenario. Standard recommended size is 5 planks or 3.07ft. flood protection
How long does it take to install a Hammerhead™ flood control wall?
Allow about an hour to install the posts permanently to either side of your opening and to insert the flood logs for the first installation. Installation of planks happens in minutes, with a few extra minutes to tighten down each plank and the top clamp. flood protection
How long a span can I have before needing a center post or posts?
The Hammerhead™ flood barrier can be extended using center posts for additional support.
We recommend planks up to 10ft for lower heights (3.28ft or 5 planks) and generally suggest using center posts for lengths longer than that.
Depending on the height of the barrier being installed, we may recommend an additional support buttress against the center post, or positioned at the middle of the planks. flood protection
Do I install posts on the inside or outside of my opening?
Depending on your specific scenario, you can install the posts either on the inside or the outside of the opening to be protected. We tend to prefer outside installations, as the wall behind the post offers additional support, but if your wall is durable, there is no problem installing the panels inside the opening, using our expanding anchoring bolts. flood protection
Note that the inside mounting method will narrow the opening slightly (about 4 inches on either side) and as such may not be as well suited for narrow doorways. Whichever mounting method you choose, confirm that the planks will clear any hinges, molding, or door hardware. flood protection
If you aren’t sure, email us at sales@garrisonflood.com with an image of your opening and we can offer our suggestions
Can center posts be removable?
Yes. The Hammerhead™ center post can be made removable by using drop in anchor bolts. flood protection
My buildings exterior is brick and uneven, will the barrier keep water out?
Hammerhead™ posts need to be installed on a flat and durable surface, so that a good seal is created between the wall and the post. When installing posts, we suggest installing them against brick, cinderblock, or concrete walls, as the planks will experience tremendous hydrostatic pressure as flood waters rise. flood protection
How do I clean the Hammerhead™ Barriers after use?
You can hose down or pressure wash the planks after use, making sure to clear away any stuck on debris. Be careful not to disturb the damage the rubber seals if using a pressure washer. flood protection
Standard household cleaners can be used to clean stubborn dirt.
Stack sections after they are completely dry.
After I install the posts, are they permanently attached to my opening?
Typically, posts are permanently attached to the opening once installed. Prior to installation of the planks, we recommend checking the bolts are secure and the post is seals well to the wall. flood protection
Installing the Hammerhead™ flood log system permanently, ensures that a good seal is created, as we recommend that you apply silicon to the sides of the installed posts to enhance the seal. flood protection
It is possible to install posts using standard drop in masonry anchors, which allow for removable center posts but we generally do not recommend this method for standard post mounting. flood protection
Are the Hammerhead™ posts removeable?
Yes, the Hammerhead™ posts are removeable, however we recommend keeping them in place for the most optimal seal for your flood protection.
Can I paint Hammerhead posts the color of my building?
Yes. Hammerhead™ flood barriers can be painted to match the color of your structure. We recommend removing the internal seals from the posts before painting and ensuring that the tightening bolts and the bracket inside the flood barrier posts and the remains free to move and tighten when needed for a flood. flood protection
What maintenance is required?
We recommend inspecting the Hammerhead posts and planks on a bi-annual basis to guarantee integrity of materials and rubber seals, however there is typically no regular maintenance required. flood protection
How do I get started?
Contact us and speak with a flood specialist today to determine the number and type of panels that are right for you. We recommend getting exact measurements of your opening before contacting us. Pictures of each opening are also helpful to help determine if Hammerhead™ is right for you. flood protection
