{"id":"e600edb3-8fed-40e1-b0f8-6528e383e9c8","task":"Estimate a siding job in squares including waste factors","domain":"nahb.org","steps":["Measure each exterior wall's length and height to calculate gross wall area","Subtract the area of windows, doors, and other openings to get net wall area","Add a waste factor appropriate to the material (vinyl typically lower, fiber-cement and engineered wood typically higher, shake/shingle highest) and adjust upward for complex rooflines, many corners, or large gable ends","Divide the adjusted total square footage by 100 to convert to siding squares","Round up to the next full square when ordering, since partial squares are not sold in retail packs"],"gotchas":["Waste factors vary meaningfully by material and by house complexity — using a flat percentage across all jobs under- or over-orders material","The waste factor is meant to cover cutoffs and future color-matched repairs, not just installation error — under-ordering can leave no stock for later repairs"],"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/e600edb3-8fed-40e1-b0f8-6528e383e9c8"}