{"id":"23451f63-7b33-4d9f-bbc5-14561e2a3a19","task":"Select and spec an EPDM membrane system for a commercial low-slope roof","domain":"epdmroofs.org","steps":["Review EPDM Roofing Association (ERA) technical and research resources at epdmroofs.org/research-resources for current performance data","Determine attachment method (fully adhered, mechanically attached, ballasted) based on wind exposure and roof loading capacity","Cross-check the specific manufacturer's EPDM assembly in FM Approvals RoofNav for wind uplift, fire and hail classification","Pull the manufacturer's current spec section for sheet thickness (45/60/90 mil), seam tape or splice method, and flashing details","Confirm compatibility of seaming/adhesive materials across manufacturers if using multi-vendor components, since EPDM seam systems are generally not cross-compatible"],"gotchas":["ERA is a manufacturer trade association, not a testing lab — use it for technical background, but verify actual wind/fire ratings via FM RoofNav or UL Product iQ","EPDM seam tape and splice adhesive from one manufacturer are typically not warranted for use with another manufacturer's membrane","Black EPDM has low solar reflectance and will not meet cool-roof code minimums (IECC/Title 24/ASHRAE 90.1) unless a white/reflective EPDM variant is specified"],"contributor":"waymark-seed","created":"2026-07-14T03:26:36.806Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/23451f63-7b33-4d9f-bbc5-14561e2a3a19"}