Now you should have most of your framing in place and now need to install your electrical boxes and any pluming if necessary. For your electrical you can purchase boxes with brackets designed to zip screw to the metal studs, but there are numerous ways you can do this, if you wish you can cut wood braces and fasten them to your studs vertically or horizontally most of this is up to you make sure any electrical boxes in the outside walls have plastic protectors behind them.The same with your pluming cut and fasten wood braces wherever you need them. You can use standard household electrical wire by using plastic inserts for your metal studs that can be purchased at your building store. Make sure your electrical work is done to code and inspected for your own safety or hire a licensed electrician or plumber to perform this part for you.
Now back to your insulation start at your back wall against the concrete where the four studs are fasten in two at either end. Set up a table of some sort that you can work on to cut your insulation and of course you want to dress properly for this part with a mask, gloves and so on. Now your first run of insulation will be narrower then the bats of insulation because you are filling from the end of the wall to the first stud that is fasten where your other wall will meet, so measure the width you want and lay your bat of insulation on your table and take a 1x2 piece of wood or something you can use as a guide for cutting your insulation straight and cut it using a utility knife to the size you need and place the insulation between the studs firmly and neatly and avoid overlap of your bats,so now you have your first cavity filled, now do the same at the other end of this wall.
Now this next part you will see why you left you the studs loose, place full bats in the next run and move the next stud over and snug it up against the insulation level it and fasten it in with your self taping 1/2 screws.Using this method works well as you do not have to worry about buying specially sized insulation for your metal studs because of being hollow on one side, keep repeating this process until you have completed your back wall. now if you reach the end of your wall and the last space between your metal studs are too wide for the insulation bats simply add another steel stud to your wall, you can just notch it out with your metal snips if you have electrical wires to go over.
This procedure allows you to use much more of your insulation factory width without having to cut as much. Once you have done your back wall you will know the method behind this and will be able to repeat the procedure on the rest of your basement, now remember to not tie in your corners so when starting on the wall coming off the back wall just push your first stud up against the stud on your back wall and place your first bats of insulation in and move the next stud over against your insulation and fasten it in and finish the rest of your wall. Later when you drywall your back wall you will pull your corner stud back a bit for the drywall to slide behind and then slide the stud back in place and fasten it in, more on this when you start to install your drywall. I just keep mentioning this so you understand where your heading and the importance of patience and procedure.
It may at times seem like a lot when reading this but as you start you will see how sensible and easy this all is, not to mention the enjoyment of learning and working with steel studs and the satisfaction of your project being done well and done right. Well this should keep you busy for a while and next you will put up your vapor barrier and be at the drywall installation soon.
