Think about what it might be like if you turned up the heat and then opened all of the windows in your home. All of that warm air would rush right out, and you would be left with a cold home and a hefty heating bill.
A home that is full of drafts is inefficient and expensive. And drafty homes are not just a problem when the weather is cold, as air that seeps in when you're trying to keep the home cool can be an inefficient nuisance as well. Higher energy bills and wasted resources do not have to be tolerated if you simply scour your home for drafts, sealing them to cut energy costs and make the home more comfortable.
Drafts are often small cracks around windows and doors, but there are many other places where drafts can form. Knowing some of the less visible spots where drafts come from may help you to seal out unwanted cold air more effectively.
Homes that feature attics with pull-down stairs tend to be drafty. In such homes, a large hole is cut out of the ceiling so residents can access the attic. So instead of thick insulation, these homes may only have a sheet of plywood blocking your interior space from the outdoors, as many attics are directly vented to the roof. To determine if there is a leak, turn on the attic light, close the attic door, and check to see if you can see the light on from below. If you can, then there is a gap letting both the light and air escape. In addition to using flexible rubber around the opening of the attic to better seal the door when it is closed, you can think about adding a thicker, more insulated door.