I used aluminum flashing from Home depot and as I had figured, parts of it melted from the heat of the burner. It wasn't too expensive and it was easier to get then stainless. I didn't want to use galvanized since the fumes that come off when it heats up are toxic, and I didn't want mild steel since it would just rust. Even with my slightly melted heatshield it still works much better than nothing at all.
Brewing Soon: Oatmeal Raisin Cookie Amber Ale
Kegged: Scottish Pale Ale (Scottish 80/- with added Hop Tea.
Bottled:Pumpkin Ale & Mcquaker's Chocolate Oatmeal Stout
Drinking: Above & HUB IPA & Dechutes Black Butte Porter