As far as i know my walls and roof of my room are made from plasterboard.These wont be strong enough to support a bag will they?tah
Plasterboard definitely won't hold the weight of a punch bag! Not if it's a decent expensive punch bag anyway! x
You need to drill your floor and purchase some kind of a screw hook and screw it on the floor.then tie you bottom on that hook..
No way, it wont even be strong enough if you screwed to the timber joists in the ceiling. A free standing one is the only other option.