The company I used to work for moved into a brand new building about 18 months ago. About a month ago I was sitting in the lounge and noticed the corner, where one painted wall and the adjacent, differently-colored wall met, was perfectly aligned.
You know how when you mask over an area, then paint, trying to be careful, and then take the tape off, there’s still some minor jagged edges, especially on textured walls? This intersection didn’t have that.
On closer inspection, I saw why. There was some sort of tape or something running the entire length of the corner, that hid the spot where the two colors came together. The problem is, I have no idea what that stuff is. Some sort of tape? Caulk? Something else?
A search online didn’t turn up anything readily recognizable as the product in question, and an email to Sherwin-Williams came back with, “We don’t sell anything like that,” (without even telling me what it was; so I assume they didn’t know). So I’m turning to you guys to see if you know what it is.