The attic is usually where you can find some of the largest opportunities to save energy in your home. By air sealing in your attic, you can stop many major air leaks and help to maintain the desired temperature throughout your home. Combined with attic insulation, air sealing can help to alleviate the formation of dangerous ice dams in the winter. 

 

Commonly misunderstood are crawlspaces and lower base areas of most homes with a basement or crawlspace.  Areas along the base of your home are where your home is commonly pressurized. By air sealing along areas of exposed framing with sill plates and rim joists (whether it be a basement or crawlspace), you are controlling air filtration along these lines which is important to your home's performance.