Increase the value of your home.
While some roofs can be restored to extend their life, nothing lasts forever! For roofs that are beyond restoration, re-roofing is the best viable option.
The other reason you may want to consider re-roofing is for safety. Depending on the region you live, replacing your old heavy concrete tiles with a lighter roofing material will help reduce the risk of damage in an earthquake or major storm event.