Roof repair due to improper roof installation, this architectural roof with ridge vent was installed less than two years ago and it's blowing off because the roofer did not install ridge vent with ring shank nails. This is why the cheapest Roofer is not the best one, when you get a roofing estimate be sure that your roofer is installing your shingles correctly. The cost of repairing hey Roof improperly installed can be very costly.