text:  you can actually repeat that process after five years up to two more times so you can actually take a 20 year old roof and extend it out to 35 which is pretty amazing you know when we did the house down in orlando that my mom owned we actually kind of split the roof in half by way of an experiment and treated one side and came back the next day and compared side to side and the untreated side the shingles were still like stiff and brittle and if you tried to bend it they would crack