What creates the seal
Removable systems typically compress elastomeric gaskets (commonly EPDM in Rubicon Flood Panels contexts) at the floor line and along side channels, with panel-to-panel interfaces on stacked planks.
- Bottom gasket against threshold or floor
- Side seals against posts / U-channels
- Stack compression between aluminum planks
- Correct tightening — not under- or over-compression
Is a double gasket better than a single one?
It is a fair question and it comes up. What a second gasket genuinely buys is redundancy: if the primary seal is nicked, fouled with silt, or has taken compression set, a secondary seal is still there. What it does not buy is a lower leakage rate. A secondary seal sitting behind a working primary sees almost no pressure differential. Two seals in series also split available clamping travel, double the length of sealing surface that has to be clean at deployment, double the consumable, and slow assembly.
What actually decides sealing performance
Not gasket count. Compression set. A 2026 study in the Journal of Failure Analysis and Prevention tested demountable flood barrier gaskets across repeated deployments. A conventional solid gasket lost 44% of its recovery after a single deployment and then failed the standard on the second and third cycles. A void-engineered profile with a curved water-facing surface, tested identically, held at zero measurable leakage across all three cycles. The variable was gasket geometry. The failure that actually happens in this category is a tired seal nobody replaced, not an insufficient number of seals.
What we use
BarrierX® runs a single closed-cell EPDM seal at each interface, with a tensioning plate and compression bolts that mechanically clamp the stack rather than relying on water pressure to seat the seal. EPDM is specified over neoprene for its saturated polymer backbone, which resists ozone and UV attack better — relevant for a product that spends most of its life in a Florida garage.
Why seals fail
Wear, UV, heat, salt exposure, debris, damaged gaskets, and uneven substrates reduce compression effectiveness. Seals are serviceable components — not lifetime magic.
- Inspect before hurricane season
- Replace damaged or flattened gaskets
- Clean tracks and seal lines before deploy
- Ask Rubicon about re-seal vs full system replacement
Rough and uneven surfaces
Gaskets can seal against concrete and many thresholds when contact is continuous. Textured surfaces, large gaps, and heavy texture need field judgment — sometimes substrate work comes first.