Portal Flex-Gate®

What is Portal Flex-Gate®?

The Portal Flex-Gate® is a high strength flood barrier that can be deployed rapidly for flood protection of tunnels, doors, or portals. It can fit a wide range of portal openings.

How it Works

The Portal Flex-Gate® functions similarly to a roll-up storefront or garage security door. It resides in a small container and is deployed in tracks along the opening prior to an event occurring.

Deployment is performed via a motor or manually if power is unavailable. The flexible cover travels in guides during deployment, and seals against them when challenged with water.

Product Attributes:

  • All components are stored at its point-of-use (no scrambling for parts in an emergency)
  • Small volume container – unobtrusive & low visual impact
  • Design is scalable to water levels up to 30ft
  • Standard designs up to 15 ft by 30 ft openings
  • Deploy/retract in minutes at the push of a button
  • Powered system with manual back-up
  • Rugged construction and debris net withstand impact


  1. Open tamperproof guiderail covers
  2. Push power button to lower door
  3. Reverse procedure to open system

Our solutions are built to order for your application.

Request a Webinar or Lunch & Learn Presentation

We’ve spent many years studying the science of flood mitigation and the effects flood waters could have on poorly protected infrastructure. In fact, our Certified Floodplain Manager Team is certified to instruct and provide learning credits to Architects, Builders, Certified Floodplain Managers, Code Officials, Engineers, Insurance Agents, Realtors, and Surveyors in many states. Email ceu@dryfloodproofing.com to get started.

Submit Plans to Receive a Floodproofing Layout

Through our team of world-class engineers and Certified Floodplain Managers, we provide infrastructure flood protection solutions to any design or building throughout the world subject to flooding. Submit your plans to plans@dryfloodproofing.com to get started and receive a complimentary floodproofing layout.