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Cedar Shingles & Shakes CEDAR SHINGLES "Wood shingles and shakes have long been favored as roofing materials because they are attractive, durable and provide good insulation from heat and cold...the commercially treated shingles self extinguish (even) after 10 years of weathering. "In my eight years as California State Fire Marshall and 15 years in fire suppression, I am unaware of any pressure-impregnated fire retardant cedar roof that has contributed to the spread of any fire in California or the United States." "Even after many decades of wear and tear, pressure-impregnated cedar shakes and shingles will remain fire retardant."
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