6. Be careful not to kink the tubing. If you kink the tubing during the installing process, mark it with tape and repair after the tubing is installed.
7. Starting with the last joist space from the boiler, attach the tubing next to the outside joist, first.
8. Now pull the tubing loop too the end of the joist space, and staple the other side up.
9. Go to the next joist space and repeat step # 7.
10. Remember to attach tubing at the end of the loops.