Fireproofing is typically cementitious material, sprayed onto the underside of metal fluted decks and structural beams. Trained contractors typically install fireproofing products. Through wall (a.k.a. thru-wall) firestopping is used where wall penetrations create a breach in the hourly rating of the wall system. Firestopping products return the wall to its correct fire rating. Materials that can penetrate a wall include: plastic pipe, conduit or HVAC systems. Product Category: Fire Protection