Painter’s Tape Mystery

As I was crawling around on the floor in the dining room (something I’ve been doing a lot of lately), I found some paint along the baseboard. I used my 5-in-1 to scrape it off. I did find it strange that the back of paint was pale blue.

I kept scraping and discovered that at some point someone put painter’s tape on the floor. Then they painted, hitting the tape. OK.

And then they put baseboard over the painted tape. Except parts of the painted tape extend past the baseboards. I pulled out complete chunks, so this isn’t a case of the very edge of the tape being put under the baseboard. The baseboard was put over the tape.

I can’t figure out why anyone would go through the hassle of putting painter’s tape down, but not the relatively quick work of taking it up.