The Gruen 90° Outside Corners are preformed, seamless waterproofing corners designed to create a watertight seal at external junctions in tile installations. Made from durable waterproof fabric, these outside corners prevent leaks, moisture buildup, and mold growth in bathrooms, showers, wet rooms, and outdoor tiled areas. With a 4-mil thick construction, they provide long-lasting waterproofing performance, making them essential for both residential and commercial projects.

Each package contains two outside corners, eliminating the need for custom cutting or shaping. Their flexible, pre-molded design allows for quick and easy installation, ensuring a secure fit with waterproofing membranes, tile adhesives, and thin-set mortars. Whether you're a professional tile contractor or a DIYer, the Gruen 90° Outside Corners provide an efficient, reliable solution for sealing exterior tile edges and transitions.

Gruen Systems, a construction product leader, has been crafting innovative solutions since 1967. Our journey began with stainless molds, and over the past fifteen years, we have expanded our expertise to include shower channels, drains, corner-finish profiles, and more. Our skilled production team ensures superior craftsmanship. We are committed to delivering the highest quality products, using only certified, first-class grade V2A stainless steel, ensuring durability and excellence. Trust Gruen Systems for reliable and advanced construction solutions.