This is a 2 year old post, but yeah man. I'm never "staining" a Therma-Tru again. In fact, I don't even like painting them anymore. It just looks like **** and makes me feel stupid. Never again."Staining" fiberglass sucks. You really aren't staining it like a wood door. You're just putting a layer of stain onto the fiberglass. I've seen faux finished steel doors that looked more like wood, than stained fiberglass doors.