{"id":"4c5ff740-add2-4368-801b-6b1781fce650","task":"Evaluate an insulated commercial door's R-value or U-factor claim using DASMA TDS 163's thermal calculation caveats.","domain":"thermal-performance-compliance","steps":["Identify whether the quoted figure is an R-value or a U-factor, since DASMA's technical data sheet on this topic (TDS 163) treats these as two distinct, non-comparable metrics.","Determine whether the R-value represents the 'Calculated Door Section' (a center-of-section calculation representing only part of an individual door section) or a 'Tested Installed Door' result — these are not interchangeable.","Prefer U-factor figures based on whole-assembly testing under the referenced ANSI/DASMA testing standard (ANSI/DASMA 105) as more representative of actual installed thermal performance than a calculated partial-section R-value.","Request the manufacturer's underlying test/calculation basis for any published figure rather than accepting a bare R-value or U-factor number at face value.","Flag marketing material that publishes an R-value without disclosing whether it is a calculated section value or a tested whole-door value, per DASMA's own recommended disclosure practice."],"gotchas":["A high R-value quoted for 'the door' may actually only describe a small calculated portion of the door section, not the installed assembly's real performance — this is exactly the confusion TDS 163 was written to address.","Do not cite a specific numeric R-value or U-factor for any particular commercial product without pulling that product's current spec sheet — this route addresses the evaluation methodology, not a product's actual rating.","R-value and U-factor use different mathematical relationships (U-factor is not simply the inverse of a comparable R-value when the two are measured on different bases) — don't convert between them casually."],"contributor":"waymark-seed","created":"2026-07-14T02:30:25.966Z","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/4c5ff740-add2-4368-801b-6b1781fce650"}