This LP SmartSide board and batten system delivers 50-year substrate durability with authentic cedar texture at 32% lighter weight than fiber cement. Built for Montana’s punishing weather cycles, it combines extreme hail resistance with marine-grade moisture protection in a package contractors can actually handle without a crew.
Technical Specifications and Installation Reality
The vertical boards measure 16 feet long at 15.94 inches actual width (405mm) with 3/8-inch thickness engineered wood substrate. Batten trim comes in two sizes: 0.675 x 1.5 inches or 0.675 x 2.5 inches, both at 16-foot lengths with matching cedar texture.
SmartGuard treatment infuses the substrate with zinc borate, marine-grade wax, and advanced resin. This isn’t surface coating that wears off — it’s engineered throughout the material. Installation requires corrosion-resistant nails with battens secured at 36-inch vertical intervals and mandatory 3/16-inch expansion gaps at all butt joints. Skip those gaps and watch your siding buckle come spring.
| Specification | Value | Source |
|---|---|---|
| Board Width (Actual) | 15.94 inches (405mm) | Manufacturer |
| Board Length | 16 feet (192 inches / 4.9m) | Manufacturer |
| Thickness | 0.354 inches (9mm / 3/8 Series) | Manufacturer |
| Batten Options | 1x2 or 1x3 nominal (440 Series) | Manufacturer |
| Expansion Gap Required | 3/16 inch at butt joints | Manufacturer |
| Nail Spacing (Battens) | 36-inch vertical intervals | Manufacturer |
Weather Performance That Matters
The extreme durability and impact resistance against hail and wind addresses Montana’s biggest siding killer. SmartGuard protection handles fungal decay and termites — though termites rarely threaten Montana homes, the fungal decay protection matters when spring snowmelt keeps siding damp for weeks.
Insurance companies often provide discounts for this hail-resistant siding — a detail that pays dividends in hail alley regions. The machine-applied finish delivers superior color uniformity and longevity compared to field-painted alternatives that fade unevenly after three Montana summers.
Installation Advantages Over Traditional Materials
Standard woodworking tools cut through this engineered substrate, unlike fiber cement that demands specialty blades and kicks up silica dust. Both blind-nailing and face-nailing installation methods work, giving crews flexibility based on the specific application.
Compared to fiber cement, it’s easier to cut with standard tools, lighter weight, and delivers better impact resistance. Against vinyl, it provides much more realistic texture and significantly higher durability and rigidity. Versus traditional wood, it resists rot, splitting, and knots while requiring much less frequent repainting.
The weight advantage transforms productivity. Crews handle 16-foot boards without the back strain fiber cement inflicts. No specialty lifts. No three-man carries. Just grab and go.
Long-Term Value Through Comprehensive Warranties
The warranty structure layers three levels of protection: 30-year finish warranty on ColorStrand, 50-year prorated limited warranty on the substrate, and 5-year 100% labor and replacement coverage. That five-year labor coverage eliminates contractor callbacks during the critical early years when installation problems surface.
SFI certification confirms sustainable forestry practices — increasingly important for green building programs. Northwest Factory Finishes applies the ColorStrand finish in controlled conditions that field painting can’t match.
Maintenance stays minimal with periodic cleaning using soap and water, plus matching touch-up paint for minor damage. No annual staining marathons. No complete repaints every five years. Install it right and let it work.
FAQ
How does the 32% weight reduction compared to fiber cement affect installation labor costs?
The lighter weight means two-person crews handle what typically requires three people with fiber cement. Faster installation, less fatigue, fewer injuries. The math works out to roughly 20-30% labor savings on vertical applications.
What specific hail ratings or impact test results back up the “extreme” resistance claims?
The product often qualifies for insurance discounts for hail resistance, indicating it meets industry impact standards. Insurance companies don’t discount for marketing claims — they require certified test results.
Do the expansion gaps affect the weather seal, and how do you maintain them over time?
The required 3/16-inch gaps at butt joints allow for natural expansion without compromising weather resistance when properly flashed. These gaps don’t require maintenance — they’re engineered into the system design.
How does zinc borate treatment compare to other preservative systems for fungal resistance?
SmartGuard combines zinc borate with marine-grade wax and advanced resin, creating multiple moisture barriers. Zinc borate specifically targets fungal decay and insects while remaining stable over decades — unlike surface treatments that degrade.
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