I have a 20 year old flat wood entry door (without mouldings or embellishment). I was going to sand and paint it, but when I sanded, I realized that the wood must have been just a veneer (plywood, perhaps?) since I could pull off pieces, if I'd tried, that would be about 1/4" wide by different lengths.
Is there any way to repair this door, rather than going to the expense of replacing it? The door is perfect on the inside, and I'm sure it's problems on the outside are a result of sun exposure.