Life Deck Specialty Coatings Fiberlath is a “fiberglass-lath” reinforced protective material that forms a protective anti-fracture membrane used in waterproofing systems and decorative concrete overlays. Fiberlath exhibits high-strength, flexible, alkaline and corrosion resistant, and is able to support and reinforce waterproof cementitious systems. Compared to other materials in the industry, Life Deck Fiberlath is known for being more flexible, strong and versatile when wrapping into drains, over stairs and incorporated into waterproof deck coatings.