{"id":"510d0c0e-4a6b-4404-8c83-acda06c2507d","task":"Confirm nail penetration/embedment requirements into studs vs. sheathing by siding type","domain":"codes.iccsafe.org","steps":["Identify the sheathing type on the wall (wood/wood-structural-panel vs. fiberboard, gypsum, or foam plastic sheathing)","For vinyl siding over fiberboard or gypsum sheathing, ensure fasteners penetrate the required minimum into framing; over wood/wood-structural-panel sheathing, ensure the combined sheathing-plus-framing penetration meets the code minimum","For fiber-cement siding over foam plastic sheathing, ensure fasteners penetrate the required minimum into framing per the applicable code table","Where fiberboard, gypsum, or foam sheathing is present, drive fasteners into studs; where wood/wood-structural-panel sheathing is present, fasteners may be driven into sheathing only where the code table or the siding manufacturer's instructions allow it","Cross-check the code's minimum against the specific siding manufacturer's instructions and use whichever is more stringent"],"gotchas":["Required embedment depth changes depending on the exact sheathing type behind the siding — the same nail length can be code-compliant over one sheathing type and non-compliant over another","Code tables set a floor; a manufacturer's instructions can require deeper embedment or different fastener types than code, and installers are bound by both"],"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/510d0c0e-4a6b-4404-8c83-acda06c2507d"}