I am satisfied with the sound isolation from the MDF doors. If you can find heavy, solid wooden doors, I think they would offer even better sound isolation. I chose MDF because I didn’t like the quality and design of the wooden doors sold near me. It’s also important to have good installation and seals around the doors for soundproofing.

My doors are made of MDF with aluminium frames. They were more expensive than the low quality wood doors offered here, but they are sturdy and lasted well over the years.

Good luck with your renovations!