We recently bought our home and are doing the prep to prepare it for painting. Our problem is that the paint is flaking off the plywood over the porch(in some part due to the wrong size nails used by the roofers prior to our ownership. The nails have been sawed off). Everything seems like a PITA.

Getting a new roof is out of the question through this is the best solution.

Placing new plywood boards over seems costly.

Sanding this down seems like a good option. The belt sander was awkward. We're thinking maybe we could rent a grinder. Has anyone else dealt with this? Any other ideas?

I would post images but I'm under the post count.