Install a Temporary Cofferdam Up to 5x Faster

Water-inflated cofferdams create a controlled dry work area for construction, maintenance, flood defense, and environmental projects. Replace labor-intensive sandbags, sheet pile, and earthen berms with a reusable system designed for rapid deployment, minimal site disturbance, and lower total project cost.

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Construction

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Water Diversion

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Flooding

The Cost of Traditional Methods

Sandbags, Sheet Pile, and Earthen Berms Slow Every Project

Three risks that compound on every traditional cofferdam, from the first day of mobilization through site restoration.

21 hrs

Schedule Slip

Sheet pile installs at roughly 30 feet per day. Sandbag walls take a 10-person crew 21 hours to build 100 linear feet. Weather, labor availability, and equipment scheduling compound every delay.

80%

Budget Overrun

Imported fill, haul-out, turbidity curtains, pile-driving equipment, and disposal stack quickly. Documented total cost on traditional methods can run up to 80% higher than a single reusable cofferdam unit.

2,100

Sandbags Per 100 Feet

Replacing one 100-foot cofferdam takes 2,100 sandbags, sand, a filling machine, and manual stacking. Post-flood disposal adds environmental risk and landfill costs.

How It Works

Four Steps from Pallet to Dewatered Work Zone

No sandbag filling. No pile driving. No imported fill. The system inflates with the same water it dams back.

Position

Unroll the deflated barrier in the work area. Units are buoyant when empty and can be floated into place by crew in waders or moved with a track hoe using the patented end pipe-loops.

Inflate

Fill from any available water source, including the same water being dammed back. Two 4-inch / 8 HP pumps complete a 100-foot unit in approximately 30 minutes.

Stabilize

The internal baffle shifts and locks once a minimum 25% freeboard is reached. The unit is anchored by its own water weight; no external anchoring required.

Dewater and Work

Pump out the isolated zone and begin construction, repair, or maintenance work in a dry environment. Drain, roll, and store for the next deployment.

Key Features

Engineered for Site Conditions, Built for Reuse

Every spec is verified against engineer-stamped designs and ISO 9001:2015 manufacturing controls.

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Working Heights

2 ft to 8 ft tall configurations available. Custom builds and standard rental stock in common heights.

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Section Lengths

Single units from 25 ft to 105 ft. Overlap ends at any angle for unlimited continuous runs and shaped configurations.

Water Containment

Controls up to 6 ft of combined water and sediment depth with a 25% freeboard margin.

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Reusable 15 to 20 Times

Scrim-reinforced PVC; three-layer vinyl-polyester-vinyl construction. In-field repairable with vinyl cement patches in minutes.

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Certification

ISO 9001:2015 manufacturing. Engineer-stamped designs available for project submittal packages.

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Patented Features

Internal stabilizing baffle for single-port inflation. End pipe-loop lifting and connection system for fast deployment.

FNPT Fill Ports: 1 inch, 2 inch, 4 inch, and 8 inch sizes available. PVC elbows and camlock valve compatibility supplied with every order.

Hydraulic and Operating Parameters

The Engineering Specs You Need Before Submitting an RFQ

Verified parameters for project review packages, hydraulic analyses, and pre-submittal sizing checks.

Maximum Water + Sediment Depth	6 ft combined
Maximum Sustained Current Velocity	Approximately 3 ft/s (2 mph) before enhanced freeboard is required
Minimum Freeboard	25% above water line at all times
Cold Weather Operating Range	Functional down to -22°F; material becomes brittle below
Fill Water Compatibility	Any available water source, including brackish, salt water, and dammed water
Continuous Run Capability	Single sections to 105 ft; overlap at any angle for shaped configurations and unlimited length
Stacking	Not supported. For water deeper than 6 ft, build a graded base to extend effective freeboard.
Pump Requirement	Two 4-inch / 8 HP pumps recommended for standard installations
Fill Port Sizes	4-inch FNPT primary; additional 1-inch, 2-inch, and 8-inch FNPT available
Shipping	4 by 4 or 4 by 5 pallets via commercial truck line

Higher velocities, slick clay or saturated soils, and unusual hydrostatic conditions are addressed by selecting a taller unit during sizing review. Submit the form below and a Sales Specialist will confirm correct sizing for your site conditions.

Method Comparison

Inflatable Cofferdam vs. Sandbags, Earthen Berm, and Sheet Pile

Apples-to-apples comparison for a 100 ft by 2 ft deployment.

Swipe left to see full comparison →

Factor	Water-Inflated Cofferdam	Sandbag Walls	Earthen Berm	Sheet Pile
Install Time (100 ft × 2 ft)	2 hours or less	21 hours	1 to 3 days	~3.3 days at 30 ft/day
Build Method	Unroll, fill from any water source	Fill, stack, layer 2,100 bags by hand	Haul, dump, compact imported fill	Drive sections with specialized equipment
Crew Size	1 to 2 (small) or 5 with heavy equipment	8 to 15 workers	Heavy equipment crew	Specialized pile-driving crew
Reusability	15 to 20 deployments	None (contaminated after use)	None	Salvageable with significant effort
Turbidity Controls Required	None	Sediment risk during placement	Floating curtain required	Floating curtain required
Site Restoration	None	Cleanup of spilled sand	Excavation and regrade	Excavation and regrade
Disposal	None	High (contaminated bag waste)	Moderate (excess fill)	Moderate
Labor + Equipment Cost	Baseline	Up to 80% higher	Up to 80% higher	Up to 80% higher

Comparison based on equivalent 100-foot linear coverage at 2-foot working height. Documented from manufacturer specifications and field installation data.

Environmental and Safety Compliance

Built for Permit-Sensitive Sites and Risk-Conscious Crews

Environmental Benefits

No imported fill or borrow material required
No floating turbidity curtain required for routine deployments
Minimal disturbance to benthic habitat and shoreline vegetation
Supports NPDES, USACE Section 404, and state-level erosion and sediment control conditions
Reusable design eliminates landfill waste from spent sandbags and excess fill
Fill water can include brackish, salt water, or the same water being dammed back

Safety and Compliance

ISO 9001:2015 manufacturing certification for submittal documentation
Engineer-stamped designs available for project review packages
Eliminates manual lifting and stacking injuries associated with sandbag walls
Reduces in-water crew hours and pile-driving exposure
Single-port inflation simplifies deployment-day crew complexity
In-field repairable with vinyl cement patches in minutes, wet or dry

Applications

Where Inflatable Cofferdams Outperform Traditional Methods

Twelve documented application categories across construction, infrastructure, environmental, and emergency response.

Bridge and Culvert Construction

Pipeline and Utility Installation

Concrete Repair

Boat Ramp Construction

Intake and Outfall Structures

Dredging and Sediment Containment

Shoreline Restoration

Canal and Diversion Pipe Work

Municipal Flood Response

Industrial and Warehouse Flood Protection

Roadway and Highway Flood Response

Environmental Remediation

Get a Quote

A Complete Project Quote Within One Business Day

Submit your project details below. A Sales Specialist will return a quote that includes everything you need to evaluate the project.

Sizing recommendation based on your hydraulic conditions
Rental and purchase pricing options
Lead time on stock and custom configurations
Freight estimate to your job site
Warranty coverage and standard terms
Equipment checklist for deployment day

Need it fast? For urgent flood response or emergency deployments, call 1-863-261-8388 directly.

Project Details

A Sales Specialist will respond within one business day.

Frequently Asked Questions

The eight questions specifying engineers and project managers ask most often before submitting an RFQ.

What is the maximum water depth a single unit will control?

Six feet of combined water and sediment depth, maintaining a minimum 25% freeboard at all times.

What current velocity can the system handle?

Approximately 3 ft/s (2 mph) of sustained current before enhanced freeboard is required. Higher velocities are addressed by stepping up to a taller unit.

What pumps and equipment do I need to inflate one?

Two 4-inch / 8 HP pumps for standard installations. We supply 4-inch PVC elbows and recommend camlock valves to streamline the fill process. An equipment checklist is provided with every order.

Can a unit bend or curve to follow shoreline geometry?

A single unit straightens during inflation and cannot be bent. To follow curves or shape configurations, overlap individual units at any angle.

How is the system shipped?

Each unit ships on a 4 by 4 or 4 by 5 pallet via commercial truck line. Freight estimates are included with every quote.

Can units be stacked to control deeper water?

No. For water deeper than 6 feet, the recommended approach is a graded base that effectively raises the deployment line to extend freeboard. Our team will work through the configuration during sizing.

Do you require long-term contracts?

Not necessarily — we believe in flexibility. Most of our clients start with project-based agreements, which clearly define the scope, deliverables, and timeline. This approach allows you to test our services and see tangible results without being locked into a long-term commitment.

Can I fill it with the same water I am damming back?

Yes. Any available water source works, including brackish water, salt water, and the water you are dewatering.

What is the cold-weather operating limit?

The material remains functional down to -22°F. Below that, it becomes brittle. Contact a Sales Specialist for guidance on extreme-cold deployments.