About a year and a half ago we knocked out a kitchen wall and put in a support beam to build an island in our kitchen. In the last few months I have noticed loud noises coming from the roof, I think. Sometimes I hear something falling. My husband heard it for the first time this weekend it sounds sort of like the sound glass makes when you pour something hot into a cold bowl. I have noticed cracks developing in different spots all over the house. The guy who put in the support for the kitchen was a structural engineer and he worked with an architect. The house was built in 1908. I just looked around in the attic and noticed several board have split and some have fallen down. What is going on? And this may or may not be related but the front door seems to be pulling away from the house. Help!