The Better Sandless Sandbag Than Quick Dam — StormBag

StormBag is the original sandless sandbag, invented and made in the USA since 1999. We built a 6-inch flood barrier in 3 minutes flat — years before the copycats showed up. FEMA and DHS approved, National Guard field-tested, salt-water compatible after fresh-water hydration, and as seen on Shark Tank. If you've been buying Quick Dam bags, here's a straight comparison of what changes when you switch.

StormBag vs Quick Dam — spec-by-spec

Why homeowners and municipalities switch from Quick Dam to StormBag

Nearly 2× taller barrier per layer

Flood height is what actually matters. A single row of StormBags builds a 6-inch barrier — enough to hold back the most common residential flood scenario without stacking. Quick Dam Flood Bags state 3.5 inches per layer, and field reports typically put the practical barrier closer to 2–3 inches. That means twice the labor and twice the product to reach the same height. See the StormBag calculator for exact bag counts by width and water height.

3-minute activation vs 5–10 minutes

When water is already at the door, minutes matter. StormBag hits full 6-inch height in 3 minutes of fresh-water contact. Quick Dam Flood Bags need 5–10 minutes to fully expand — enough time for water to already be inside. For last-minute deployments, StormBag activates faster and locks in taller.

FEMA and DHS approval

StormBag is on FEMA and DHS approved-vendor lists for emergency flood mitigation. That matters if you're a municipality, school district, healthcare facility, or federal contractor purchasing under an emergency requisition — the paperwork is already done. Quick Dam does not carry either approval. See our FEMA and DHS approval page for the documentation.

Salt-water compatible (once hydrated)

StormBag cannot be hydrated in salt water — the polymer needs fresh water to activate. But once hydrated with fresh water, StormBags will hold back salt water. Quick Dam explicitly states their bags are not designed for salt-water use. For coastal storm-surge and hurricane deployments, that difference decides which product you can actually deploy.

National Guard field-tested since 1999

StormBag has been deployed by the National Guard and state emergency management agencies for over two decades. As of 2026 we've shipped over ten million bags into hurricane season, spring flooding, and post-fire burn-scar deployments. Quick Dam is a later entrant to the sandless-sandbag category — StormBag invented it.

Which Quick Dam replacement should you order?

Pick by opening width and expected water height. The sandbag calculator does the math for you, but the fast version is:

• Single door or garage side door (2.5–4.5 ft): Single Door Kit — $69.99, ships as a pre-configured kit.
• Double door or wide entryway (5–7 ft): Double Door Kit — $109.99.
• Single-wide garage door (8–10 ft): Single-Wide Garage Kit — $149.99.
• Double-wide garage door (14–18 ft): Double-Wide Garage Kit — $239.99.
• General stockpile or unusual opening: Loose 10-pack or 25-pack boxes starting at $99.99.

Featured on Shark Tank

StormBag closed a $200,000 deal on Shark Tank — the sandless sandbag category's first prime-time appearance and a major reason the product is now stocked by emergency-management agencies nationwide. Read the full story here.

Frequently asked questions

Is StormBag better than Quick Dam?

For flood-barrier applications: yes on the specs that matter. StormBag builds a 6-inch barrier per layer vs Quick Dam's 3.5 inches stated (2–3 in practice), activates in 3 minutes vs 5–10, holds FEMA and DHS approvals, and works in salt water after fresh-water hydration. If you're comparing purely for water absorption in a small indoor spill, either product will absorb roughly five gallons per bag — but for flood barrier work at doors, garages, and property lines, StormBag builds a taller wall faster.

Are Quick Dam bags FEMA approved?

No. Quick Dam does not hold FEMA or DHS approval. StormBag is on both approved-vendor lists for emergency flood mitigation and has been National Guard field-tested. This is a critical distinction for municipalities, hospitals, schools, and federal contractors purchasing under emergency requisitions.

Can Quick Dam be used in salt water?

No. Quick Dam explicitly states their products are not designed for salt-water use. StormBag cannot be hydrated in salt water either — but once hydrated with fresh water, StormBags will repel salt water. That makes StormBag the choice for coastal storm-surge and hurricane deployments where hurricane-force water eventually contains salt.

How fast do StormBags activate compared to Quick Dam?

StormBag reaches full 6-inch barrier height in 3 minutes of fresh-water contact. Quick Dam Flood Bags need 5–10 minutes to fully expand. If water is already at your door, StormBag activates in roughly half the time.

Are StormBags cheaper per barrier-foot than Quick Dam?

Because each StormBag builds nearly 2× the barrier height per layer, you need roughly half the bags to protect the same opening at the same water height. That typically makes StormBag less expensive per barrier-foot even when the per-bag price is comparable. Use the calculator to see the exact bag count for your opening.

How long do StormBags last in storage?

Unopened cases store flat for up to 5 years in a dry environment. Quick Dam quotes a similar 5-year shelf life. Store both in dry, sealed packaging away from direct sunlight and humidity.

Can I use StormBags indoors?

Yes. StormBag is water-activated and non-toxic. Deployed dry into a wet area (basement, elevator shaft, garage), a single bag will absorb roughly five gallons of fresh water on its own. For barrier work at interior doorways or utility rooms, deploy pre-hydrated or hydrate in place with a garden hose or bucket. See our full article on indoor StormBag use.

Ready to switch?

Order online at stormbag.co. For municipalities, hospitals, school districts, data centers, or any facility needing a pallet quote or pre-staging consultation, reach out to info@stormbag.co. Same-day pickup and pallet shipping available from our Chico, California facility.

See the full evergreen comparison at StormBag vs Quick Dam: which sandless sandbag is better for flood protection.

This is one of several head-to-head comparisons. For the full picture across every sandbag alternative and every sandless brand, see alternatives to sandbags for flooding.

See Also

For a broader comparison across all major sandless sandbag brands (StormBag, Quick Dam, FloodSax, and more), see our Best Sandless Sandbag for Flood Protection buyer's guide.

For the full emergency playbook — how flood water actually enters homes, how to protect the garage door specifically, and what to do when the storm is 24 hours out — see the Emergency Home & Garage Flood Protection guide.