The cheapest way would be to get some self adhesive weather stripping.
Soundproof wall between bathroom and bedroom.
Soundproofing the bathroom door just like any other place can either be cheap or expensive.
The bathroom shares a wall with my bedroom and my 3 yea old s bedroom.
First you have to learn the main principle to the soundproof bedroom as stated in our earlier article.
Seal the seams of the finished wall with acoustical caulk formulated for exposed surfaces.
The caulk between them absorbs vibrations.
This will mean that the gaps formed whenever the door is closed are sealed.
More dense wall easier sound absorption use the thickest drywall.
For maximum effect use soundproofing boards rather than drywall.
This combo requires more time and knowledge.
A 15 foot long roll of 1 8 inch thick mlv 60 sq.
The best way to soundproof a bathroom wall is to add an extra layer of drywall with a damping compound like green glue and a soundproofing material in between.
Softer material insulates the sound better.
Additionally it s definitely not the cheapest method too.
It s heavy so if you buy it online expect to pay another 40 50 for shipping.
Sandwich it between layers of drywall to greatly reduce sound transmission through walls.
The main problem is the sound of water running plus every bump on the counter and everything echos loud and clear through the wall into my sons room.
And to reduce bathroom noise.
It s made to hang on walls or install on floors to help deaden sounds.
This should be installed all around the door frame and works great in absorbing sounds.
For even greater soundproofing install two layers of drywall with a 3 8 inch bead of acoustical caulk applied around the back of the second layer.
I found sound deadening drywall and it seems like a good choice.