Sashco Big Stretch Redwood Elastomeric Door, Siding & Window Caulk, 10.5 oz, 6-Pack, Packaging May Vary. Houses move. Window frames pull away from the siding or doors shift against the brick. They move when the temperature changes, rain falls, the wind blows, or the ground shakes. Most caulks can't take it, dry hard, and crack. That's why you need Big Stretch High-Performance Water-Based Caulk. Its powerful adhesion and extreme elasticity stick, flex, compress, and stretch—over 500% of its original size!—to handle most movements your house can dish out, all without cracking. Keep the weather out. Thanks to its extreme elasticity, Big Stretch can twist, flex, compress, and stretch with the movements of your home to create a permanently watertight seal. It handles even the widest joints without depression. Apply once, enjoy for years. You'll love Big Stretch. You can spread it as easily as mayonnaise on a BLT. It's low-odor and easy to clean up with water. It comes in a variety of colors, including clear, or it's easily painted. What's not to like? Indoor and outdoor use. Big Stretch adheres to a wide variety of building materials, including vinyl siding and windows. It has incredible UV resistance and is perfect for sealing out the elements for years. Or seal gaps around things like crown molding to add an attractive aesthetic touch to finish your home project.