I'm a bit of a tight #### and I'm recycling about 50m2 of colorbond that was replaced under warranty. I'll be spraying it after installation. There will be a couple of endlaps and a few old holes from the roofing screws.

How can i seal these?

I was thinking flashtac from underneath and then filling hole flat with sikaflex and then airless spraying over the top. Does this sound OK?

Cheers
Pulse