[brucepick]

Nice looking job on the upper grill.

I used foam pipe insulation on the upper and lower grills. I use either the non-split insulation, or I glue the split seam back together.

For the lower grill, I cut 3 lengths of foam, and squish them flat, one stacked on top of the other. Then wrap duct tape around the bundle. Sometimes it needs one more layer of foam to give it enough beef. It's just right for the lowest row of grill slots. For the one above that, I stack 4 lengths of insulation, squish flat and wrap. It ain't pretty, but it lets me remove and add chunks as the outdoor temperature demands.