Restoring old oak flooring
I have an old house that has the thin oak T & G (2" surface) flooring. I am trying to keep as much of the original as possible. Though not on the National Register, It would qualify. I am going to be re-doing the floors in the near future, and there are some problems that I need some input on.
First, living in Florida, all the old houses down here have a certan amount of termite damage. The floors have never been sanded, and I know that there will be some termite damage exposed. What is the best filler, as well as takes a stain good. On the exterior of the house, I have been using "Bondo" auto body filler. Great stuff. I was told that the Bondo will take a stain. Well, I wanted to get some ideas from the pros.
Second, The wood has "cupped" in places. There is plenty of good wood there, so sanding it flat will be no problem. However, because of the age of the wood (shrinkage) when these cupped boards are sanded, it will leave a small space between some of the boards. Is there a special type of filler used for this purpose?
Third, It appears that the oak flooring has a slight seperation from the sub-flooring, causing there to be a "crackling" sound when walked on. Does this have to be corrected before the floor is refinished? I know that I could hammer some finishing nails through the flooring, into the sub-floor, but this would take literally thousands and thousands of nails. The house is about 2300 sq. ft.
Any ideas, or advice would be greatly appreciated.