An Attic is an area on the top level of a house that is not tall enough to be used as a living area and is often unfinished. As a great deal of heat can escape through the attic of a house, it is common for this area to be insulated.
A Crawlspace is the space underneath that house that usually holds most of the supplies to the house.When you have technicians work on those supplies make sure they close up the holes they have made, because if it is not properly sealed and the environment within the space is not properly maintained, it may become prone to mold and pests. If this happens, the insulation and items that are stored within it may become damaged.
For optimal energy efficiency, your home should be properly insulated from the roof down to its foundation.When pests invade those spaces that insulation won,t be able to do its job.