| Hi - I'm doing a DIY project, to stain/varnish pine stairs built by a carpenter earlier this year.
I've already put two coats of stain on and it looks nice. The carpenter told me to use Miniwax Helmsman Spar Urethane to finish it, but I noticed on the back it says not recommended for floors. I am not sure why he said to use this one specifically.
Should I use the Miniwax Super Fast-drying polyurethane for floors instead, as the instructions say on the back? Or stick with the Spar Urethane?
Any advice is appreciated! I can't get a hold of the carpenter and I'd really like to finish this asap. | 
