{"id":"2af6bdd7-e748-4071-abda-6ce984224d8e","task":"Verify sealant-to-substrate adhesion using ASTM C794 peel testing during submittal review","domain":"astm.org","steps":["Confirm ASTM C794's current scope on the ASTM store — a laboratory 90-degree peel adhesion test for cured elastomeric joint sealants on specific substrates (e.g., glass, aluminum, concrete, mortar).","Confirm the exact substrate materials on the project (glass type/coating, specific aluminum finish/anodize or paint system) match what's covered in the sealant manufacturer's submitted C794 report.","Request project-specific adhesion test results (not generic sealant datasheet claims) when the substrate finish differs from a manufacturer's standard tested substrates.","Cross-check C794 adhesion results against C1401's guidance on acceptable adhesion/cohesion failure modes before accepting a submittal.","Track any field-applied primer or substrate prep requirements identified in the C794 testing, since adhesion performance is often prep-dependent."],"gotchas":["A generic 'passes C794' claim on a sealant datasheet does not confirm adhesion to the specific coated glass or finish on this project — require substrate-specific data.","Field substrate cleanliness and primer application (not just the tested lab specimen) drive real-world adhesion performance; testing doesn't substitute for field QA."],"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/2af6bdd7-e748-4071-abda-6ce984224d8e"}