If the roof has sustained damaged from hail, that would void any manufacturer or labor warranty that you may have have on your current roofing system.
If you have insurance on the home, this would be a case to file a claim. Hail damage is a cover peril under your policy. There are different types of policies for home owners.
Replacement Cost Value Policy: The insurance company will pay the full replacement cost of the damaged item(s) after you pay your deductible about
Actual Cash Value Policy: The insurance company will pay you the actual cash value of the damaged item(s). This leaves you to pay your deductible and the depreciated amount to equal the full replacement cost.
FIND some highly rated roofing companies on Angie's List. Make sure they will come out to do a FREE inspection and estimate of the damage.
IF they determine the damage to be from hail, CALL your insurance company and file a claim.