HENRY BAKOR 990-06 Yellow Jacket Fiberglass Roofing Repair FabricDescription This product features open weave glass fiber yarn fully saturated with synthetic resins. Its bright yellow color allows easy visual confirmation when the fabric is fully embedded in the coating, while ensuring resistance to rot, mildew, and water penetration. Ideal For: Designed to be used as a reinforcing membrane, it can be incorporated into a variety of coatings to provide enhanced strength and durability where toughness is essential.