6 min read · Cost
Siding warranties come in two layers — manufacturer (the product itself) and workmanship (the install). Both matter, neither is a substitute for the other, and the way they're pitched is often misleading. Here is what they actually cover.
Manufacturer warranty: what's covered, what isn't
Major fiber cement (James Hardie HZ10) and engineered wood (LP SmartSide) products carry strong manufacturer warranties on the substrate (typically 30 years non-prorated on the board) and the finish (typically 15 years on Hardie's ColorPlus, with conditions). The board warranty covers manufacturing defect — chalking, cracking, splitting from the product itself. It does not cover damage from incorrect install, missed flashing, fastener spec violations, or substrate failure beneath.
Workmanship warranty: what's covered, what isn't
A workmanship warranty from the installing contractor covers what the manufacturer warranty explicitly doesn't — installation defects. A defensible workmanship warranty addresses the assembly: fastener spec, gapping, flashing integration, weather-resistive-barrier laps, caulk at transitions. Industry-credible warranty lengths run from 5 years (lower end) to lifetime (rare and often hedged). The length matters less than what's covered and how callbacks are actually handled.
The gaps most pitches hide
Common gaps: pro-rated coverage (the warranty's value drops every year), labor-only or material-only coverage (you pay the other half), 'transferable' warranties with restrictive terms that usually don't actually transfer, and 'lifetime' warranties with definitions of lifetime that mean the original homeowner's residence only. Read the document, not the brochure.
How we structure warranties at Sierra Siding
Manufacturer warranty registration is done by us at project close so it's in your file with the documentation. Our workmanship warranty covers the install assembly: weather-resistive barrier laps, flashing integration, fastener spec compliance, and caulk at transitions. Callbacks within the warranty period are addressed without prorating or labor surcharges. The exact written warranty terms come with your project documentation; we'll walk you through them at signing.
Manufacturer vs. workmanship warranty — what each covers
| Coverage area | Manufacturer | Workmanship |
|---|---|---|
| Product defects (chalking, cracking) | Yes | No |
| Finish fading (within warranty period) | Yes (Hardie ColorPlus, etc.) | No |
| Fastener spec compliance | No | Yes |
| Flashing integration | No | Yes |
| Weather-resistive barrier laps | No | Yes |
| Substrate damage under bad install | No | Yes |
Key takeaways
- Manufacturer warranties cover the product; workmanship covers the install
- Length matters less than what's actually covered
- Read the document — pro-rating, labor-only, and 'transferable' restrictions hide the real terms
FAQ
Quick Answers
Not necessarily — a 15-year non-prorated warranty with full labor coverage is worth more than a 'lifetime' warranty with pro-rated terms and labor exclusions.
Install outside Hardie's published standards — wrong fastener spec, missed gapping, incorrect cladding-to-grade clearance — voids coverage. Correct install is what keeps the warranty intact.
Yes — without prorating or labor charges. Callbacks are written into the warranty document we provide at project close.
Sources
Authoritative references
- James Hardie — official product & installation resources
- James Hardie ColorPlus Technology
- Contractors State License Board (CSLB) — verify a California contractor
External links to government, code, and manufacturer sources. Sierra Siding is not affiliated with these organizations; references are provided for verification.