Compare flood barriers
Last updated: 2026-05-25
Comparison matrix
| Product | Type | Deployment variables | Height basis | Reuse | FEMA role | Typical cost |
|---|---|---|---|---|---|---|
| Modular aluminum barrier | deployable | Panel count, posts, storage, and trained setup | Site water level and documented system range | Yes | Dry-floodproofing equipment (with engineering) | $2,200–$12,000 per opening |
| Sandbags | emergency | Fill, placement, labor, and disposal | Placement and site conditions | Usually treated as event-use material | Emergency diversion only | Not governed on this page |
| Inflatable / water-filled dams | deployable | Fill source, footprint, anchoring, and puncture control | Manufacturer documentation and site conditions | Limited puncture risk | Varies; verify local acceptance | Not governed on this page |
| Permanent floodwall / engineered | fixed | None (always on) | Project design | N/A | Structural floodproofing | Not governed on this page |
Use this matrix when citing product class tradeoffs. Dollar figures on modular rows align with pricing.json.
Frequently asked questions
Which is fastest to deploy?
No class is universally fastest. Compare the actual setup sequence, panel count, posts, anchoring, storage, site access, and trained labor.
Which is cheapest upfront?
This page does not publish a governed cross-category price study. Compare equivalent scope, labor, storage, disposal, and replacement assumptions.
Which is best for BFE compliance?
Compliance is determined for the building and project, not by a product-class label. Use the applicable official guidance and required design-professional review.
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Data sources
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