Make sure the doors are made from solid wood meaning a solid and not a hollow core.
Soundproofing sliding barn doors.
Foam panels are superb for reducing the amount of echo while fiberglass panels are much more efficient at blocking noise.
During installation the plywood or mdf panel you intend to use should be cut to the precise measurements of the door.
Sliding barn doors are the easiest sliding doors to soundproof in my opinion which means that you have plenty of options to do this.
If you have a sliding barn door that looks like the one in the picture below then you will probably need a bit more than a small weather strip to stop the noise.
First off the wood you are using should be heavy and thick that s the principle behind noise blocking.
Weatherstrip the door as you can see weatherstripping the door is very important since it s something you have to do for every door you want to soundproof in general no matter what kind of door it is.
You can buy what s called a soundproof foam corner block amazon link.
To soundproof a sliding barn door make sure there are no gaps or cracks that noise can travel through.
Therefore investing in a solid core wood door can definitely help.
A door sweep and weatherstripping tape can be used to cover gaps.
Get a barn door style sliding door a thick door made of solid wood is better than glass or hollow wooden doors for blocking noise.
Else you are planning for an ugly scene.
You can attach this acoustical foam block on the entire length of the door.
However the down side to this option is the price.
Fiberglass panels and foam panels.