Harry Bitner

We have a bubble which originally was around 12 inches long. We contacted our painter and he came out and put sprakle on it and waited a few days. He came out today and low and behold it is starting to bubble up again. My husband went up to the attic and everything seems to be OK and we haven’t had any rain and there is no water marks but this just remains a mystery to our painter and ourselves. Do you have any ideas? If you do e-mail us at dab@msn.com Thanks!