James Hardie 5/16 in. x 8-1/4 in. x 12 ft. HardiePlank Smooth Lap Siding, HardieZone 10, Iron Gray
Regular price $0.00HardiePlank HZ10 Smooth Lap Siding, Iron Gray (8-1/4 in. x 12 ft.)
Durable fiber cement lap siding engineered for HardieZone 10 climates, finished in Iron Gray with a smooth, modern profile. Built to resist fire, pests, moisture, and fading for long-lasting curb appeal and protection.
Key Features:
- Engineered for HZ10 climates: Performs in intense sun, heat, humidity, and hurricane-force winds
- Durable fiber cement: Noncombustible and resists rot, warping, termites, and woodpecker damage
- ColorPlus Technology finish: Baked-on color resists fading and requires less maintenance
- Smooth modern profile: Clean, contemporary look with 8-1/4 in. board width and 7 in. exposure
- Code compliant: ICC-ES ESR-2290/1844/2273 and Miami-Dade, Florida, Texas approvals listed
Please check the Product Data Sheet Here
Specifications Table:
| Specification | Details |
|---|---|
| Product Name | Hardie Plank Smooth Lap Siding for HardieZone 10 |
| Brand | James Hardie |
| Thickness | 5/16 in. |
| Width | 8-1/4 in. |
| Length | 12 ft. |
| Exposure | 7 in. |
| Color/Finish | Iron Gray, ColorPlus Technology |
| Material | Fiber cement |
| Style | Smooth lap siding |
| Unit of Measure | Piece (PC) |
| Weight per Piece | 19.06 lb |
| Applicable Standards/Approvals | ASTM E84; ASTM C1186 Type A Grade II; ASTM E136; WUI Listed; ICC-ES ESR-2290, ESR-1844, ESR-2273; City of Los Angeles RR 24862; Miami-Dade Approved; HUD MR 1263d; California DSA PA-019; NYC MEA 223-93-M; Florida FL889; Texas TDI EC-23 |
| Climate Zone | HardieZone 10 (HZ10) |
Frequently Asked Questions (FAQ):
Q: What are the board dimensions and exposure?
A: Board size is 5/16 in. thick x 8-1/4 in. wide x 12 ft. long with a 7 in. exposure.
Q: Is this product prefinished?
A: Yes, it features James Hardie ColorPlus Technology in Iron Gray for long-lasting color.
Q: Can it be used in high-wind or coastal regions?
A: Yes, it’s engineered for HZ10 climates and carries approvals such as Miami-Dade and Texas Department of Insurance.
Q: Is the siding fire resistant?
A: The fiber cement is noncombustible and meets ASTM E84 and E136 standards.
Q: What installation resources are available?
A: Refer to the official installation instructions and best practice guides linked in the product resources.
Sculpted Simplicity for Modern Exteriors
Iron Gray in a smooth lap finish delivers a tailored, architectural silhouette that instantly elevates a façade. The ultra-clean lines read crisp and intentional, allowing windows and metal accents to shine. Pair with cedar soffits and matte black hardware for a refined, coastal-modern statement. It’s a timeless, resilient cladding that anchors luxury curb appeal with confidence.
Upgrade your exterior with durable, fade-resistant HardiePlank Smooth in Iron Gray—built for HZ10 performance and lasting style.
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