Hello,

I am an amateur and hope that someone skilled can help me with some answers to a few questions.

I will be expanding my small gym in the garage, enlarging it and also making sure it stays reasonably warm during winter. The space will be a total of 5x5m, so I will move and build a new inner wall as you can see on the left. An insulated one up to the peak with 70x45 studs.

In the ceiling, I plan to just put Fibrotech panels directly on the ceiling boards. The ceiling is already insulated.

The exterior walls are currently insulated, so I would like to just remove the old drywall (if I have to?) and put up new OSB and drywall so that I can hang weights, etc., on the walls.

What should I use for the floor? It’s a concrete floor directly underneath, and I probably want to insulate it? What is the easiest way?

Is it enough to just plaster the lecablock or do I need to do something more to retain the heat during the winter, do you think?

I am thinking of an oil-filled electric radiator as a heat source on the new wall. It doesn’t need to be 22 degrees in here, but I don’t want it to get too cold either.

Thank you so much in advance for the responses!
 
  • Garage gym under construction with bordered concrete walls, rubber flooring, a weight bench, dumbbells, and exposed wooden ceiling panels.
Glue and screw (into the studs) wood panels or ultraboard (for fire rating) onto existing drywall. If possible, screw the holders for the weight plates into the studs or have weight racks on the floor. Weight racks in particular are subjected to a lot of stress. There are home builds with 45x45 studs where weights are rolled in from floor level. Great for benching and bending over the spots. If you lay fall protection mats and wear protection plywood under the rack, the rack ends up roughly level and the weights stick up well around 40 cm.

I'll leave the insulation to someone else; I know the gym part.
 
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