I thought this was common knowledge that you removed the masking tape immediately after painting or caulking; otherwise, the coating will dry and stick to the masking tape. A friend at work told me he tried caulking once using masking tape to make clean edges. He let things dry and then found the masking tape pulled up most of the caulking. Another used masking tape to protect the moulding while he painted the walls. Again, he let things dry and then ruined the edge of his paint job. I thought I must share this tip.