I'm planning to replace a door to our basement with a glass panes (french) door. Our current door is a simple builders' grade hollow core door. I'm planning to buy a cheap french door from a home improvement centre to replace it, to let some light into a basement stairwell.
My question is, how does sound blocking quality of a simple glass panes door compares to a one of hollow core door? I might scrap the whole project if glass is even worse than hollow core door...