FlowStop Flood Protection

Inflatable Flood Barrier for Doors, Garages & Windows

The easiest way to floodproof your home, before the next storm hits.

  • Deploys in 5 minutes. One person, no tools.
  • Custom-built to seal any opening.
  • Designed for everyday storms. Hurricane-proven.
Step 1 of 4

What do you need to protect?

🔒 Free, no-obligation quote · Takes under 2 minutes
Not sure yet? See FlowStop in action ↓

See it in Action

Watch FlowStop deploy in under 5 minutes.

Built for Real Storms. Designed for Peace of Mind.

Made in USA

Flowstop was invented in France in 2019 and introduced to the market in 2021. In 2024, Flowstop opened a US office and will open its first factory in the US in 2026. Our technology is patented and backed by over 5 years of engineering R&D.

One person. 5 minutes.

No tools, no contractors, no permanent installation. Deploys in under 5 min. Just inflate and your home is protected, before the storm arrives.

Flawless Fit, Every Single Time

Because no two doorways are exactly alike, FlowStop barriers are custom-manufactured to match your building perfectly. Once inflated, our heavy-duty seals adapt to any unevenness or texturing on your walls, delivering a watertight seal that traditional rigid panels simply can't achieve.

Flood Tested, Globally

This isn't just a barrier : it's a breakthrough that has successfully protected properties during major storm events across the globe, including Hurricane Helene in Florida.

The Storm Came. The Water Didn't.

★★★★★
" What a great investment. Myers house survived hurricane Milton storm surge. THANK YOU!!!"
— Emanuel C., Myers, FL
★★★★★
"FlowStop saved our home during hurricane season. Deployed in 2 minutes flat — and held perfectly. Worth every single penny."
— James R., Tampa, FL
★★★★★
"After our neighbor's basement flooded, we called FlowStop immediately. Installed within a week. This is the product every homeowner needs."
— David L., New Orleans, LA

FlowStop Outperforms Traditional Flood Barriers

FlowStop was designed with one mission : easy enough to actually use it.

Rigid Panels
FlowStop
Deploys solo, no tools
❌ Needs 2+ people
✅ 1 person, 5 min
Seals on uneven surfaces
❌ Gaps left behind
✅ Inflates to fit perfectly
Stores at home
❌ Garage-sized unit
✅ Rolls up, fits in a bag
Permanent vs Seasonal
📅 Permanent install, left in place year-round
🌧️ Up to 30 days, store when not in use

FAQ

Everything you need to know before your free quote.
FlowStop barriers are precision-custom-made to fit your exact door, window, or garage frame. When inflated, the barrier forms a high-pressure watertight seal inside the opening, stopping floodwater before it ever gets a chance to enter. No gaps, no leaks, no compromise.
Under 5 minutes. Inflate, position, and you're protected, no tools, no contractors, no permanent installation required.
About 7 lbs for a standard door. Light enough to store in a closet and deploy solo when a storm hits.
Yes. Every FlowStop barrier is custom-built to your exact measurements for a watertight seal on any opening, standard or non-standard.
FlowStop barriers protect against a minimum of 31.5" of standing floodwater, up to 47.5" depending on the model. The right height depends on your specific flood risk. When you request a quote, we assess your situation and recommend the exact model for your home.
Yes. FlowStop is built for multiple storm seasons. Deflate, roll up, and store compactly off-season, ready to deploy again when the next storm threatens.
FlowStop pricing starts at $90 per square foot. Because every barrier is custom-built to your exact openings, your final price depends on the size and number of doors, garages, or windows you protect. Your free quote gives you the exact cost upfront : no surprises, no obligation.
Any door, garage door, or window. We custom-build each barrier for the specific opening type and dimensions.

Protect Your Home in 3 Steps

1

Virtual Property Assessment

A targeted video consultation to map your flood risk, assess project feasibility, and provide cost estimates.

2

On-Site Demonstration & Precision Measurement

We bring the Flowstop system directly to your property to demonstrate its power, take exact measurements, and audit your building's envelope.

3

Custom Fitting & Deployment Training

We guarantee a flawless, watertight fit and provide hands-on training so your team can deploy and store the system with total confidence.

Built to Fit. See Every Size.

FlowStop is custom-built for your exact opening : doors, garages, windows, any width.

Want to check available dimensions before ordering?

See full specifications and sizing guide →

Don't wait for the next storm.

Floodproof your home in minutes. Get your free, no-obligation quote today.

🔒 Free, no-obligation quote · Takes under 2 minutes