I have an older home that was built around 1912. It is a great home with 10 1/2' ceilings. We have a chimney that goes up through the middle of the home, and it is not visible. (Meaning there is plaster over the brick.) We also have a fuel oil furnace. We have noticed that the plaster is bubbling on the ceiling around the chimney on 2 sides. I have been up in the attic and the air flow is not good. The roof was replaced and there were no whirly birds, which I have since added. Also there are not vents on the soffits, which I will be adding. In the winter months, the attic is very cold and gets frost. Then it heats up and the frost melts. Up in the attic, I pulled the insulation away from the chimney and there isn't actually a hole in the plaster, but the paint on the ceiling has basically "let go" from the plaster. I have a few questions on what to do with this:
1: I know I need to add insulation in the attic, but I would like to figure out if I need to do anything with the chimney first. (Line it????)
2: How can I fix the plaster around the chimney? (Big willy's plaster repair?) One spot is bubbled up.
3: Where do I start with air flow in the attic? I have whirly birds, will add soffit vents. Anything else?
I appreciate the help.
-First time homeowner!