Reasons To Sealcoat Your Asphalt
Reliable Quotes:
"Pavement Preservation: Techniques for Making Roads Last", by Tom Kuennen, U.S. Department Transportation(Federal Highway Administration,
http://www.fhwa.dot.gov/pavement
/preservation/ppc0605.cfm)
"...Experience shows that spending $1 on pavement preservation before that point eliminates or delays spendiing $6 to $10 dollars on future rehabilitation or reconstruction costs." (paragraph 1)
............................
Why Sealcoating Is Done (http://www.highways.gov.sk.ca/sealcoating/)
-Seal coats provide a waterproof surface and prevent moisture from entering, then weakening the roadbed.
-Seal coats reduce deterioration and cracking of the asphalt surface and prolong the life of the pavement.
-Seal coating prevents failures on pavements and is used where failure has already started...
...-Seal coating defers expensive repaving.Seal coats generally last three to five years.