Expert Siding Contractors in Georgina, ON

It all depends on the type of roof you have and how crazy of weather we Ontarians get over the years. Typically though we can say that a well made high quality asphalt roof would last around 15 years, wood shingles are very voliaile so between 12 to 40 years

Sadly a lot of homeowners only find problems after a leak or something really drastic occurs to their home before they realize they have a problem on their hands. I recommend doing roof inspection at least once a year (twice is better!). Inside your home you can look at ceilings for cracked paint, discoloration. Outside, on your roof look for any shingles that might be malformed, missing or loose. Flashing that is visibly breaking down.

Essentially there are 2 main alternatives. Either you try to do a patch job or a roof recovery which attempts to fix the problem without replacing the whole roof. This works in only very specific situation and you should consult me or another experience contractor before attempting this.

No. There are cases where flashing is causing leakages or something else minor. In those rare cases you can just get the minor problem fixed and not have problems in the future. But in any case where there is actual water damage from an actual roof issue this is due to either bad workmanship or lower grade materials and then you need to get the roof replaced.