FlowStop Flood Protection

Inflatable Flood Barrier for Doors, Garages & Windows

The easiest way to floodproof your home, before the water reaches your door.

  • Deploys in 5 minutes. One person, no tools.
  • Custom-built to seal any opening.
  • Built for heavy rain, rising water and flooding.
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 Flooding. 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 water 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 Water Came. It Didn't Get In.

★ 4.8 · 134 Google reviews worldwide
★★★★★
"FLOWSTOP and its representative, Richard, are both absolutely fantastic. Richard was so professional, so thorough and so-o-o helpful."
— Myles L.
★★★★★
"I bought the FLOWSTOP inflatable flood barrier to protect my basement from potential flooding. I don't regret it, as the water table has since risen and caused a flood. The flood barrier prevented water from entering the basement. Installation is easy."
— Jose R.
★★★★★
"The experience with Richard, the local sales rep, has been nothing short of outstanding! From the demo in our community, to coming to our home to measure the openings to be protected, following up in the delivery... He went over everything in great detail and was able to answer all of our questions. He went above and beyond to make sure we are a happy customer."
— John O., Hudson, FL

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 flooding threatens.
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 to last for years. Deflate, roll up, and store compactly between uses, ready to deploy again when the next flood 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?

Visit our Website

Don't wait for the next flood.

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

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