You'll also hear terms like naturally occurring sugar, added sugar, low-calorie sweeteners, sugar alcohols, reduced-calorie sweeteners, processed grains, enriched grains, complex carbohydrate, sweets, refined grains and whole grains.ou may also hear sugar referred to as simple or fast-acting carbohydrate. There are two main types of sugar: 1  naturally occurring sugars such as those in milk or fruit. 2  added sugars such as those added during processing such as fruit canned in heavy syrup or sugar added to make a cookie.
Metal Roofing Materials. Metal roofing materials can last for decades without degrading in appearance or function. The oldest metal roofs in the world are over 120 years old and are still in fairly good condition. Paint and anti-rust technologies increase a metal roofâs lifespan drastically and make metallic roofs an excellent long-term investment. Residential metal roofs typically have a rated lifespan of 50 years or more. This is outstanding compared to the 15-year average lifespan of other materials.
Average Life Expectancies. Slate roofs can last 100 years or more, and clay roof tiles, on average, endure 100 years. Cooper and other metal roofs have life expectancies of at least 50 years.eciding Factors. While slate has a very long lifespan, it's also very expensive, costing approximately $800 per square -- an area equaling 10 feet by 10 feet -- at the time of publication. Asphalt singles are relatively inexpensive, but their life expectancy is much shorter.