First thing first I put into use my new vac and spent a good couple of hours cleaning dust that had collected over the last few months. I know that I'm going to create a whole load more dust in the next few days but I felt better after giving the room a clean up. The vac works really well and has excellent suction - definitely a worthwhile addition to the workshop.
Once all cleaned up it was time to start filling the walls with mineral wool. There are a few spaces that I still need to do some jobs on still so I couldn't fill them just yet - you'll notice some gaps in the photos. Anyway generally I made good progress with this but I did ensure that I used most off-cuts as I went along. I didn't want to be left with loads of pieces at the end that I'd need to fit in and store while working. Instead after cutting each slab out of a pack of four I went out of my way to use as much of the off-cuts as I could. I takes a little longer to use the small bits but worth it in the long run. I won't be starting on the ceiling void just yet as there are a couple of jobs I need to finish.
One thing that's immediately obvious is the change of acoustics in the room now and also that the space is now starting to feel a bit more like a studio now. Another thing, it's nice to be doing a job that doesn't involve making any noise for once.