Back in the day, most window installations went something like this: Set, level, square, nail, spray foam, rinse, repeat. But ...

Add Yahoo as a preferred source to see more of our stories on Google. BanksPhotos/Getty Images Poorly sealed windows allow heat to enter your home during the summer and cool drafts during the winter.

There’s nothing worse than wrapping yourself in a blanket, turning the heater on, and still feeling a cold breeze sneaking in through your window. But the good news is that you don’t always need ...