Installing Ultra Touch (recycled cotton denim) insulation

Step 4 Cutting insulation

I would just roll out the insulation until it filled up a bay. Where I got to something like braces between joists, the insulation would have to be cut. Cutting was a bit tricky. I tried to saw all the way through with a bread knife. This worked well but took some time. I later used a utility knife to score the top layer and then rip the rest. In fact some of the rolls had a lengthwise factory cut about halfway through the roll. This could allow you to rip the insulation to about 9" wide strips to fit in areas that were not 16."

The best way was to just rip the insulation by hand. This was faster. It did result in a bit more uneven tears, but you could pull off chunks like pulling bread apart and stuff in the areas you missed.