Most fiber cement failures don't show up on install day — they show up months later, after the first real freeze-thaw cycle or a hard wind-driven rain, by which point it's a warranty call instead of a five-minute fix.
Ground clearance is the most common shortcut. Siding installed too close to grade, a deck, or a roofline wicks moisture straight into the board — the manufacturer's install guide spells out minimum clearances for a reason, and skipping them because a job is tight on schedule is the fastest way to earn a callback.
Fastener pattern is the second. Fiber cement needs the right number of fasteners, in the right location on the board, driven flush and not overdriven — or the board can crack, work loose, or fail to sit flat against the water-resistive barrier behind it.
Caulking and flashing details at windows, doors, and butt joints get rushed on tight schedules, but they're exactly where water gets behind the cladding and does the damage nobody sees until a wall cavity is already wet.
None of this is exotic — it's all spelled out in the manufacturer's installation instructions. The contractors who build a reputation on Hardie siding are the ones whose crews follow that manual on every job, not just the jobs a homeowner happens to be watching.
Work orders, crew, compliance, and invoicing — built for siding contractors, not lawyers.
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