For example, if you had a batch file called stuff.bat and you typed stuff a b c d at the command prompt, the letters a, b, c, and d would be assigned to the variables %1, %2, %3, and %4, respectively.
Fiberglass shingles generally have a longer life expectancy than do asphalt shingles. Properly installed tiled roofs have a normal useful life of 20-30 years or longer, but individual pieces can become cracked or broken or the nails rust out.
Composite shingling is a standard building material for covering and waterproofing different roof styles. Whereas the older asphalt-only roofing shingles are generally rated to last 20 years, composite shingling can have a longer lifespan depending on the conditions. As with any building material, the environment and conditions where the shingling is installed have a dramatic impact on the material's lifespan.