The window frame moves away from the siding or the door shifts against the brick. They move when the temperature changes, the wind blows, or the ground swells. Sometimes they move a little and sometimes they move a lot.

Most caulks can't take it. They dry hard and crack out. That's why you'll love Big Stretch.

It has powerful adhesion but stays elastic and rubbery. Big Stretch will twist, bend, stretch over gaps up to 2" wide, or compress to absorb just about any movement a home can dish out.