Permeable pavement for pedestrian routes — specified as a stormwater BMP
Poured-in-place stone and recycled rubber composite. Engineered for Low Impact Development (LID) and MS4 compliance. ADA-compliant, LEED-eligible, and submittal-ready with CSI Division 32 spec language and full ASTM testing. More stable than gravel. More forgiving than concrete. Fully permeable from day one.
Between loose aggregate and rigid pavement
Flexus is a resin-bound permeable pavement system — a category of pervious surface that didn't formally exist for pedestrian routes. It bridges the gap between loose aggregate paths (gravel, decomposed granite) and impervious rigid pavement (asphalt, concrete), giving specifiers a bound, stable, fully permeable surface that qualifies as a stormwater BMP.
- Permeable — yes✓
- Stable — no, migrates under foot traffic✗
- ADA-aligned — typically no✗
- Maintenance — continuous redistribution required✗
- Submittal-ready — no formal system✗
- Permeable — yes, > 200 in/hr target✓
- Stable — yes, bound and seamless✓
- ADA-aligned — yes, designed for pedestrian routes✓
- Maintenance — low, no migration✓
- Submittal-ready — yes, full ASTM testing + docs✓
Flexus defines a category that didn't formally exist: permeable pedestrian infrastructure with the stability of a bound surface and the drainage of an open system.
Specified by the people who write the spec
Flexus is engineered to slot directly into the documents and procurement processes used by the three groups who actually put pavement on the ground. Use the path that matches your role.
ASTM tested. EPA leach tested. Submittal-ready.
Seven tests across ASTM, EPA, and RCRA standards. All completed. Every report ships in the submittal package alongside the CSI Division 32 specification — because if you're putting it in a spec, you need the paper to back it up.
Download spec pack →Rough order of magnitude
Not a quote — but enough to know if Flexus fits your project budget before you invest in a spec.
Ranges reflect typical installed costs in the Southeast US. Final pricing depends on site conditions, base depth, mobilization, and contractor. Request a sample or spec pack to start a formal quote process.
Two series. One system.
Same architecture. Same testing. Different aggregate intent — infrastructure-first or design-led.
Built to last. Documented honestly.
The questions every specifier eventually asks — answered here, not buried in a footnote.
Flexus is a new product in a new category. These projections are based on binder performance data and comparable installations — not decade-long field records. We will publish updated service life data as installed projects age. ASTM test reports in spec pack →
Ready to evaluate, budget, or specify?
Get a project-specific budget estimate, request a physical sample to hold, or pull the spec pack to start a submittal. Each is one step away.