Preprufe Preformed Corners utilize a preformed core covered with the proven Preprufe Advanced Bond Technology ensuring continuity of the Preprufe System. Preprufe Preformed Corners are prefabricated corners specially designed to maintain the waterproofing integrity at the inside and outside corners of a building.

The Preprufe Preformed Corners are available in two configurations to accommodate most common installation needs and building designs. With the Preprufe Advanced Bond Technology on both sides of the core, each preformed corner can be used in two different details. The Preprufe Preformed Inside Corner is designed to also be used as an outside cap. The Preprufe Preformed Outside Corner is designed to also be used as an inside cap.