DIY Frequently Asked Questions / Door Sweep')">

• Seals the bottom of an exterior door, preventing drafts, water, noise, light and insects.
• Usually made of aluminum extrusions with vinyl flaps.
• Screws into the lower part of the door.
• Some types lift automatically when the door is raised.
• Another type is an aluminum extrusion with a rain-drip flange to prevent the flow of water off a door from collecting on a threshold and flowing under a door.
• Another type is an adhesive-backed plastic door sweep.