When you have tall branches that are hanging over your house, then you are at a risk of having a limb falling and causing a lot of damage. At the same time, having a tree that is slowly climbing at the territory of your home brings along the possibility of mold growing on your siding. Trees that are damaged or are dead may cause a hazard in case there is a storm. It is for this reason that you need to find the best arborist Pittsburgh has available to help you out if you are living under such dangerous conditions.