Why Carpenters Gothic?

I believe that the novel is titled Carpenters Gothic because it adds a darkness affect to the story as well as describes Liz's life. Liz's life is so dark, Gaddis portrays that. Liz is modern but yet has that gothic dark feel to her. She is a very complex character in this very complex story. Liz is almost like an out of place character, she's very different from the other characters in this novel. Liz is unstable, just like the way these gothic houses were made. These houses were made with human error, very experimental to these carpenters.
Maybe this is what this novel was. An experiment for Gaddis, maybe this was written in random. The way his conversations in the story are written, not proper. Very scattered, making it super easy to lose yourself while reading. Maybe thats the reason it was given this title.