Through the years we have been called to repair cracked and broken clay tiles that were properly installed but improperly walked upon by painters, termite companies and other workers.
A smart solution is to install the roof using foam instead of nails. The foam creates a cushion under the tiles allowing painters, workers to walk on the tiles as if it were a floor. This benefits painters painting the second story, fumigators dragging heavy tarps over the roof, satellite and solar panel installers and anyone who needs to access the roof.
Further, these tiles will not move or fly off in high winds.
The most common issue that causes torch down roofs to fail is improper sealing around the edge metal flashing or pipe and vent flashings. Water often penetrates the roof due to a lack of adhesion of the torch down material to the edge metal. Water can leak through the ceiling and walls and migrate into the house.
If the roof is new, you can patch it without problem. If it is already 15 years old, the roof should be replaced.
Proper patches must be thoroughly cleaned and prepared. If improperly patched, a weak spot develops at the seam.