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.
Regular shingles have an average 15 to 20-year life. An architectural shingle roof has a 24 to 30-year life, with some super-. premium grades rated for up to a 40-year lifespan. And architectural shingles come in wider variety of. colors, subtly variegated color patterns, have greater.