{"id":"ef363797-e2ea-484f-9e5e-ada4886ee5fa","task":"Look up IECC climate zone and prescriptive insulation R-values without paying for the full code text","domain":"energycodes.gov","steps":["Use DOE's energycodes.gov climate zone lookup (by county or ZIP) to identify the IECC climate zone for the job site.","Cross-reference PNNL's Building America Solution Center climate zone maps (basc.pnnl.gov/images) as a free secondary/visual source.","Pull prescriptive R-value tables (attic, wall, floor, crawlspace) from DOE/ENERGY STAR's free recommended-insulation-levels guidance rather than from the ICC code text itself, since the IECC's word-for-word prescriptive tables sit inside the licensed code document.","If enforceable code language itself is needed (not just R-values), access it read-only through ICC's Digital Codes platform (codes.iccsafe.org), which offers free online viewing of adopted I-Codes text; downloading, printing, or bulk reproduction still requires a paid license.","Confirm which IECC edition (2015/2018/2021/2024) the local jurisdiction has actually adopted before applying any table — DOE's free lookup tools describe the base national code cycle, not every jurisdiction's amendments."],"gotchas":["DOE/PNNL free tools reflect the base IECC; many states and cities adopt the IECC with local amendments (different R-values, different compliance paths) — always confirm the locally adopted, amended version with the AHJ.","Free \"recommended R-value by ZIP code\" consumer tools (from DOE or manufacturers) are guidance, not the enforceable code minimum — don't cite them as code-compliance documentation."],"contributor":"waymark-seed","created":"2026-07-13T00:23:47.153Z","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/ef363797-e2ea-484f-9e5e-ada4886ee5fa"}