How do I strengthen soundproofing in the basement ceiling?

[octomore]

I have a basement where my workshop is located directly under our living room on the ground floor, and I'm thinking of soon taking some action to enhance the soundproofing of the basement ceiling since the workshop isn't fully set up and in use yet.

As it stands now, from the living room downwards:
- Click flooring
- Underfloor chipboard (~35mm or whatever it is)
- Joists with glass wool (I added extra glass wool when replacing the underfloor on the ground floor)
- Ceiling panel in the basement

In other words, the basement ceiling is just a layer of old wooden paneling without tongue and groove, so there are gaps and some holes here and there. My loose idea has been to put up OSB + plasterboard or equivalent on top of the ceiling panel in the basement to seal the transmission of sound upwards. Maybe OSB + Plasterboard + acoustic panel, i.e., those with wooden slats (or another type of panel designed to acoustically dampen).

In addition to the measure in the basement ceiling, I'm thinking of trying to find a suitable rubber mat to lay on the concrete floor in the basement, which would probably generally dampen the bouncing of sound in the workshop, so less of it finds its way up to the living room.

Does anyone else have any thoughts, tips, or advice on this?

 

[Nissegandhi]

When trying to soundproof, you should choose materials with high density. My suggestion is to space out the ceiling with Gyproc acoustic profile AP 25 covered with 2 layers of gypsum. Leave a gap of about 3mm against the surrounding walls. Seal each layer with acoustic sealant. In the joist, it would have been better with a mineral wool with high density instead of glass beads.

 

[octomore]

When trying to soundproof, you should choose materials with high density. My suggestion is to space up the ceiling with Gyproc acoustic profile AP 25 covered with 2 layers of drywall. Leave a gap of about 3mm against the surrounding walls. Seal each layer with acoustic sealant. In the joists, it would have been better with a mineral wool with high density instead of glass bead.

Good tip with the acoustic profile from Gyproc, I'll look into it further to see if it would work, I have some decorative beams in the basement ceiling that run across in several places, so it will be necessary to fit something extra between them and in that case probably leave 3mm and acoustically seal against the beams. Regarding glass wool vs mineral wool, my impression has been that they are very similar in terms of soundproofing, not that it matters in this case, I am not going to tear up the floor or ceiling again to change the material in the joists.

 

[Nissegandhi]

I didn't think you would redo the insulation, but one should preferably choose mineral wool for soundproofing since it has a higher density than glass wool.