How to Make Fiberglass Duct Board
- 1). Set up your work space by laying down newspaper and cardboard on a table or bench. Be sure to wear proper safety gear, including a particle respirator, protective eyewear and latex gloves. You may also want to wear a long-sleeve shirt to protect your arms from the fiberglass.
- 2). Lay the duct board on your work space. Ensure that the board is secure so it doesn't slide around. Use a permanent marker to outline the parts of the board you're going to cut. Double-check your measurements before moving on to the next step.
- 3). Cut the outlines with a duct board knife, shears or a handsaw. Use a swift, smooth cutting motion.