Plaskolite
1/2" x 2' x 4', Egg Crate, Open Grid, White, Drop-In Suspended Ceiling Lighting Panel, Styrene, Thickness Is 3/8".
Frost King Carpet Bars
Poly-Cover® Plastic Sheeting
Sashco Big Stretch Caulk & Sealant
Sashco Through The Roof
Gardner® Wet-R-Dri All Season Roof Patch