This is no doubt an original BUT if it has occurred previously somewhere in the United States it is possible someone watching this forum may have had it occur. They may not know why as this is the nature of refinishing wood floors. Frankly, and sand and refinish MAY fix the problem BUT no one may know why or if it will. Such a small area would be more simply fixed by replacing that small area. It appears experts have done on site evaluations to no avail or I would suggest an NWFA inspector. The plain fact is many times it cannot be definitively proven what causes such strange things to happen many times.
↧