what smoker are you trying to wrap?
I use silver bubble wrap from Home Depot on my drum(been using the same piece for 5 years) and it gives me a 30 degree bump in grate temp.
My Egg only gets an umbrella when it rains.
My stick smoker doesn't get nuffin cause its a sunny day, get the whole clan, buddy. And I like looking at it as much as cooking on it.