Why Carpenter's Gothic?

Based on what we learned in class on the meaning of "Gothic", the title "Carpenter's Gothic" is supposed to represent what is dark and devious in the story. In the story, Liz and Paul are nearly always in an argument and it seems like everyone is isolated in their own way without any happiness or comfort in the story.. Some examples of novelistic moments would be when Gaddis purposely misspells "stayed" and "belie" in order to give a different meaning  to the dialogue. Sometimes it is hard to follow but that is because of another novelistic moment which speeds the dialogue up and is the reason why the story can be complicated.