Did you know that insulating and weather-stripping your attic access hatch, like that pictured here, can be one of the most cost-effective strategies for significantly improving the thermal efficiency of your home? In fact, I understand that you can lose 30-40% of heated air through hatches that are neither insulated or weather-stripped. Think about that, 30-40%, it’s a HUGE number! For a small investment (less than $20), you can save hundreds of dollars annually. It’s a no brainer. This picture was taken at a recent home inspection in Burlington, Washington.