As cold weather sets in, have you noticed cold seeping through your closed windows or a draft sneaking under the door? If so, you may be just a few easy steps away from a warmer, more comfortable home and a lower heating bill. Some home weatherization techniques take just a few materials and simple instructions, as well as a little investigating to discover what needs to be sealed and insulated. “Both the attic and basement are key focus areas,” said Andy Meyer, a residential program manager for Efficiency Maine, the independent administrator for energy efficiency programs in Maine.