By combining the physical properties of Portland Cement with the strength of mineralized wood fibers, ARMOROCÂ® is ideally suited for all applications where durability and fire-resistance are a concern.
6-8 Months. Of course, all foods last for a shorter period of time if they are not stored properly. But, like many other products, tortillas usually have a best by date which is simply the last date by which a manufacturer will vouch for a product's quality, not its safety.
Average three-tab roofs last about 17 â 20 years. Architectural asphalt shingles have additional asphalt making them more durable than three-tab. Warranties range from 20 â 50 years with an actual life expectancy of 30 â 50 years. Metal roofs are extremely durable, often lasting up to 50 years.