Aluminum

Once all the pieces of tubing have been pulled through the joist bays I needed to fasten the tubing to the ceiling. This is done with pieces of aluminum that have been precut and shaped specifically for this task.

These are the pieces of aluminum that I purchased from www.radiantec.com

This is a shot of the aluminum stapled to the first run of tubing.Each piece of aluminum has about 12 staples.

I like this shot - between the joists looking down one of the runs.

And here is a shot of the very necessary staple gun. I bought this one at home depot, but it turned out to not be powerfull enough. I brought it back and got the next size up. I don't think that going through aluminum is tough, but that plywood is tough stuff!