Grand Sequoia® ArmorShield Shingles For a rugged wood-shake look, consider. They are a fraction of the cost of traditional slate, wood shakes, or expensive metal roofing and they pass UL 2218 Class 4 Impact Testing. Grand Sequoia® ArmorShield Shingles feature artisan-crafted shapes combined with oversized tabs and a dimensional design, resulting in a sophisticated beauty unmatched by typical shingles. Their specially formulated color palette is designed to accentuate the shingle's natural appeal.