The Membrane
Bedliner Genetics, Underbody Mission
If you have ever tried to damage a sprayed-in truck bedliner, you already understand UnderGuard Elite — it is the same pure-polyurea family of elastomer, redirected at the side of the truck that actually rusts. Two components mix at the gun and react on the steel into a seamless black membrane: no solvent carrier, no shrinkage, no seams or overlaps for brine to exploit. It bonds at hundreds of PSI, stretches over 350% before it will tear, and stays flexible at forty below — the exact conditions a salt-belt underbody lives in.
Chloride brines, the specific chemistry that kills modern trucks, have no effect on the cured film even under continuous immersion. Between that and gravel-impact resistance inherited from the bedliner world, the underbody stops being the sacrificial side of the vehicle.
Membrane Data
| Property | Value |
|---|---|
| Chemistry | Pure polyurea, two-component, 100% solids |
| Tensile strength | 2,800 PSI (ASTM D412) |
| Elongation | 355% (ASTM D412) |
| Chloride brine resistance | No effect, continuous MgCl2/CaCl2 exposure |
| Gravel impact | No chip-through at spec build (SAE J400-type testing) |
| Tack-free / drive-away | 4–6 minutes / same day |
| Full cure | 24 hours (then pressure-wash safe) |
| VOC | 0 g/L |
| Specified build | 40 mils flats / 60 mils splash zones and boxing |
| Cold flexibility | Elastic to -40°F, no cracking at frame flex |
Under the Truck
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