I've just finished staining 4 rooms and a staircase in my house (about 650 SQFT). I was wondering how long I can wait to apply the finish and how long between each coat I can wait before sanding and applying another coat. The reason I'm asking is I'm unable to sit aside 2-3 consecutive days to do the entire house.
If I put the first coat of poly down on a Wednesday and then waited until Friday morning to sand and then applied the second coat on Saturday, would that cause any problems?
Also If I don't finish the first coat on Wednesday and I did half Wednesday and half Friday would that cause any issues with the section I did on Wednesday? How long is too long between coats of poly?
I'm using an oil-based poly. http://www.minwax.com/wood-products/interior-clear-protective-finishes/high-build-polyurethane.html