This will depend on the area you are planning to clad. It will also depend on the direction you want the cladding boards to run and whether you want a continuous line or if you are happy with visible joints. As our cladding boards fix together, the ‘visible surface area’ is smaller than the actual surface area of the board. Each cladding board has a visible surface area that is listed in the description on the product page. This is the figure that is needed for calculating your total cladding board order. We would recommend adding 5% for wastage. We have advised and supplied many projects and are happy to share this experience and knowledge with you. Please email sales@husqui.com with any questions you may have.