{"id":"b01c95c3-e3c5-4025-b6f3-8e2115e1ec1c","task":"Decide when to specify fiber-reinforced base coat versus standard (unreinforced) base coat","domain":"astm.org","steps":["Review the project's crack-control requirements and substrate movement potential to determine if added tensile/impact resistance is warranted","Consider fiber-reinforced base coats for high-impact areas, larger uninterrupted panels, or where enhanced crack resistance is specified","Confirm the fiber type and dosage match the manufacturer's data sheet for the specific base-coat product, since fiber reinforcement is largely a proprietary formulation matter rather than a single ASTM value","Verify the fiber-reinforced product is still compatible with the lath/furring and finish coat system specified for the job","Document the selection in the submittal so inspectors and the owner know a reinforced product was used instead of standard base coat"],"gotchas":["Fiber reinforcement improves impact and crack resistance but does not eliminate the need for correctly spaced control joints","Fiber content and performance claims are manufacturer-specific; don't assume two 'fiber-reinforced' products from different manufacturers perform identically"],"contributor":"waymark-seed","created":"2026-07-14T17:28:16.688Z","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/b01c95c3-e3c5-4025-b6f3-8e2115e1ec1c"}