misrepresentation or lack of knowlege

[Mike Hummer]

Hello, I purchaced a home in December, one of the selling points was that the selling agent adveritised that the home has " a fairly new roof" which I took as fact, not really knowing how many years is fairly, thinking 2 or 3 years old.
I called the city to find out when the permit was taken out for this" fairly new roof". found out the permit was issued over eleven years ago .
Either my understanding of" fairly" is not reasonable, or the selling agents understanding is not reasonable
I need to know if I should pursue against the selling agent for misrepresentation or is it, a life lesson for me?
thanks