Does anyone could suggest a way to completely soundproof a bedroom sliding door? I am investigating on car door system, when door is almost close at the end, it will push against door frame to ensure no space would appear so that it could become waterproof and soundproof, but deploy this kind of method is very time consuming and high risk of failure rate as there is no commercial available for this kind of door system. Perhaps someone who have such experience could give me some example?
Sound or Water "Proofing" is very difficult. Cheap & simple peel & stick Weather Stripping will greatly reduce air (the majority of sound transfer) & water intrusion. But, to get anything close to "Proofing" you need to have precision full contact around the entire door perimeter.
Sorry but, Star Trek was only a TV show. I'd suggest that you check with companies like this who are the masters of what you're asking & yes you can buy their stuff off the shelf.