Soundproof door seals reduce the air and sound transferred through entrances by lining the perimeter of doors with aluminum and silicone. Door seals are DIY soundproof materials with which you install using household hand tools. All you need to do is a little pre-drilling for attaching soundproof door seals, and then follow the easy instructions included in the package. Soundproof door sweeps also use aluminum and silicone, but are installed at the bottom of doors to block sound and air from escaping through the threshold. Enhanced by a long-lasting silicone seal that remains pliable even in cold temperatures, soundproofing door sweeps are great for use in hotels, apartment buildings, recording studios and homes with multiple bedrooms. Door sweeps, like acoustic door seals, help keep interior noise in and exterior noise out. Door sweep installation is simple, yet it makes a cow-sized difference when it comes to noise control.