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.
You will rarely get the full life out of a shingle. A 20 yr shingle will last an average of 15 yrs sometimes less. A lot depends on the installation, shingle over reroofs dont last as long. Or if underlayment/felt paper was not used that takes years off the life of a shingle.In your case hopefully they used a 30 yr shingle which should last 25 yrs. I know most states I work in now use a 25 or 30 year shingle on new work.If you have architectural shingles they are probably a 30 year if its a standard 3 tab probably a 20 year shingle.n your case hopefully they used a 30 yr shingle which should last 25 yrs. I know most states I work in now use a 25 or 30 year shingle on new work. If you have architectural shingles they are probably a 30 year if its a standard 3 tab probably a 20 year shingle.