CertainTeed Landmark Architectural Shingles

CertainTeed Landmark Series Shingles in the ‘Resawn Shake’ color deliver the heavy-duty performance Montana roofing demands. At 219-228 lbs per square and 73-76 lbs per bundle, these architectural shingles pack enough weight to handle mountain weather without becoming a liability on steep-slope installations.

The NailTrak technology—an extra-wide nailing area up to 3x wider than standard—makes the difference on steep roofs where accuracy matters. Contractors working 8/12 pitches in September don’t have time for missed nails. QuadraBond technology secures the dual layers with four adhesive points, preventing the delamination that cheaper shingles suffer after a few freeze-thaw cycles.

Wind and Weather Performance

Standard warranty covers 110 mph winds for 15 years, but the real story is the upgrade path. With specific installation requirements, these shingles handle 130 mph or even 160 mph winds—critical for properties near the Rocky Mountain Front where chinook gusts routinely exceed standard ratings.

The certifications back up the marketing. ASTM D7158 Class H wind resistance means these shingles passed the highest wind uplift test available. ASTM D3161 Class F adds another layer of verification. Miami-Dade approval might seem irrelevant in Montana, but it demonstrates hurricane-level testing that translates to chinook survival.

Class A fire rating (UL 790 / ASTM E108) addresses Montana’s other major roofing concern. With 37% of Flathead County classified as wildfire interface zones, that fire rating isn’t optional—it’s table stakes for responsible construction.

Installation Requirements and Specifications

The dimensional specs matter for material calculations:

Specification	Value
Dimensions	13 1/4” x 38 3/4”
Exposure	5 5/8”
Coverage	3 bundles per square (100 sq. ft.)
Shingles per square	65-66 shingles
Minimum slope	2:12 with additional underlayment for 2:12-4:12

The nailing pattern shifts based on conditions: standard 4-nail for typical installations, 6-nail for high wind or steep slopes. Every nail must land within the NailTrak zone for warranty compliance—miss the zone, lose the coverage.

Required accessories include CertainTeed Starter Shingles and color-matched Hip & Ridge Shingles. For Montana’s cold valleys, WinterGuard waterproofing underlayment goes on valleys and eaves. That’s not an upsell—it’s ice dam insurance.

Bottom Line for Montana Contractors

Landmark shingles solve real problems. The StreakFighter technology uses copper-containing granules to prevent algae streaks, though Montana’s dry climate makes this less critical than the structural features. Some variations carry Class 3 impact resistance (UL 2218), useful for hail-prone areas.

At roughly 225 lbs per square, these shingles add significant dead load—factor that into structural calculations for older homes. The weight pays dividends in wind resistance and longevity. CertaSeal adhesive bonds shingles against uplift, crucial when chinook winds hit 40 mph in January.

For contractors handling Montana’s 5-month construction window, NailTrak’s wider target speeds installation on challenging pitches. Professional reviews average 4.2/5.0, praising the “heavy-duty feel” and reliable performance. The weight and dual-layer construction that contractors appreciate translates to fewer callbacks for blow-offs and longer service life in extreme conditions.

Frequently Asked Questions

What wind speed rating do Landmark shingles carry in Montana? Standard installation provides 110 mph coverage for 15 years. Upgraded installation methods can achieve 130 mph or 160 mph ratings. Given Montana’s chinook winds, the upgrade makes sense for exposed locations.

Do Landmark shingles meet Montana’s fire rating requirements? Yes, they carry Class A fire rating per UL 790 and ASTM E108 standards. This meets or exceeds all Montana building codes for wildfire interface zones.

How much do Landmark shingles weigh compared to standard 3-tab? At 219-228 lbs per square and 73-76 lbs per bundle, they’re roughly 50% heavier than basic 3-tab shingles. The extra weight provides better wind resistance but requires consideration for older roof structures.

What’s the actual coverage per bundle? Each bundle covers 33.3 sq ft, with 3 bundles required per square (100 sq ft). Each square uses 65-66 individual shingles.

Can Landmark shingles handle low-slope applications? They work on slopes as low as 2:12, but slopes between 2:12 and 4:12 require additional underlayment. For typical Montana applications above 4:12, standard installation applies.