five things you never should do on a metal road never use tar to patch tar cracks and it will eventually leak never use the same screw to go in go one size bigger thing is new and a rubber and everything seals properly never use caulking look at the dirt underneath it see there it will crease and break there never step on these risers never use caulking on a seam like this never the caulking will adhere to the bottom part here and water will trap and push the water back in never coat it with any coating find what's causing a leak and fix that particularly this roof is such a good shape somebody sold this owner a coating over this for $25,000