The definition of rainscreen cladding is the latest technology for building envelope that protects the building structure from moisture infiltration. This type of building envelope has two layers including the outer layer called cladding and the inner wall that have an open air space between them. The main benefit of this type of building envelope is that it provides ventilation and drainage preventing accumulation of water and thus preventing mold and rotting of the building structure. Rainscreen cladding works based on air pressure equalization and water diversion through weep holes or channels. Materials used to create rainscreen cladding may include such material as wood, metal, fiber cement and composite panels. Advantages of rainscreen cladding besides protecting buildings include improving thermal performance and enhancing architectural appearance. Installation of rainscreen cladding requires special attention because of the need to fulfill its basic function and also to meet building codes and regulations. Building owners and architects tend to install rainscreen cladding because of its sustainability and low maintenance. What is rainscreen cladding? Building energy efficiency performance will be improved after installing rainscreen cladding.