Allura Spectrum Plus Pre-Finished Shake Select

16” x 48” fiber cement shake panels with factory-applied 5-side Spectrum Plus finish deliver authentic cedar aesthetics while meeting CalFire WUI and FEMA flood resistance standards. For Montana contractors dealing with wildfire interface zones and spring snowmelt flooding, this panel system covers more ground faster than individual shingles while delivering measurable weather protection.

Installation Efficiency and Performance

Each 16” x 48” panel covers 5.33 square feet with a 7” exposure. That’s the real advantage here — panel-based installation versus nailing individual shingles. Contractors note significantly reduced on-site labor and time-saving over individual shingles.

The 5/16” thickness (standard for Shake Select) provides structural integrity without excessive weight. Edge options include Straight Edge, Staggered Edge, Half-Round, and Octagon (Select only), letting contractors match existing architecture or create custom looks.

Factory-applied Spectrum Plus pre-finish uniformly coats all 5 sides. This isn’t just paint slapped on one face — it’s complete encapsulation that eliminates field painting. The finish uses Sherwin-Williams pigments and comes with Spectrum Touchup Kits for cut edges. At Montana’s UV-intense elevations, factory finish outlasts field-applied coatings every time.

Fire and Weather Resistance

Montana’s wildfire reality demands serious fire ratings. NFPA Class A (Non-combustible) rating with 0 flame spread and 5 smoke index means this product meets the strictest fire codes. CalFire WUI Listing (8170-2180-0502) confirms compliance for wildland-urban interface installations.

FEMA Class 5 Flood Damage-Resistant classification addresses Montana’s other weather extreme — spring snowmelt and rain-on-snow events. The cellulose fiber-reinforced cement material won’t absorb water like wood shakes.

Specification	Value	Source
Fire Rating	NFPA Class A	Tested
Flame Spread	0	ASTM E84
Smoke Index	5	ASTM E84
Flood Resistance	FEMA Class 5	Certified
Material Standard	ASTM C1186 Type A Grade II	Tested

Warranty and Long-Term Value

30-Year Transferable, Non-Prorated Limited Warranty on the siding itself shows manufacturer confidence. The 15-Year Limited Coating Warranty specifically covers the Spectrum finish — critical for maintaining appearance without repainting.

Code compliance spans IBC/IRC 2015-2024, ensuring this product meets current and upcoming building standards. Additional certifications include Florida Building Code, Miami-Dade County NOA, Texas Dept of Insurance (EC-16), and CalGreen 2022 Title 24.

Bottom Line

Panel-based installation saves labor hours versus individual shingles. Factory 5-side coating eliminates field painting in Montana’s harsh UV. Class A fire rating and WUI compliance meet wildfire zone requirements. FEMA flood resistance handles spring runoff conditions.

For contractors working Montana’s fire-prone interfaces or flood-prone valleys, Spectrum Plus Shake Select delivers both installation efficiency and proven weather resistance. The panel format and factory finish translate to faster installs and fewer callbacks.

Frequently Asked Questions

What makes these shake panels different from individual fiber cement shingles?

16” x 48” panels cover 5.33 square feet per piece versus handling dozens of individual shingles. Installation goes faster with panels, and the factory-applied 5-side Spectrum Plus coating arrives ready to install without field painting.

How does the fire rating compare to wood shakes?

Wood shakes don’t achieve Class A fire ratings with 0 flame spread. These fiber cement panels are non-combustible per ASTM E136 and carry CalFire WUI certification for wildland-urban interface zones.

What maintenance does the factory finish require?

The 15-Year Limited Coating Warranty covers the Spectrum finish. Touch-up needs are handled with Spectrum Touchup Kits for cut edges. No regular repainting required like wood shakes.

Are these panels suitable for Montana’s freeze-thaw cycles?

FEMA Class 5 Flood Damage-Resistant rating and fiber cement composition handle moisture without the expansion issues of wood. The material meets ASTM C1186 Type A Grade II standards for freeze-thaw resistance.