Just a point for you. I refinanced 11/2012 and went from a 80K loan to a 100K. I too used the money for remodeling. Hardwood floors, Bathrooms X2 and Granite counter tops.
Last month when I checked my Fico it was 837. When I refinanced it was 809 so after almost 2 years mine went up. So I would think you should have the same results. Good luck you're using it for all the right reasons.
And yes it is common for them to pull the credit report the day of closing mine did.