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.
composition roof lifeasphalt shingles are rated at 20 25 30 or 35 years the average roof life is 5 to 10 years less depending on climate conditions in your area the life of any asphalt shingle roof is effected if algae and mildew is allowed to grow on it the plant wraps it s roots around the granules on your asphalt shingle roof and as it grows it can actually force the granules to come loose composition roof lifeasphalt shingles are rated at 20 25 30 or 35 years