Are you an architect, engineer, or contractor considering the adoption of a double roofing system for your projects? The innovation and advantages of double roofing are gaining significant traction in the construction industry. This guide explores the applicability of double roofing and provides a meticulous, step-by-step process for installing the Onduline Double Roof System. Preparation: Site Inspection and Assessment Before embarking on the installation, conducting a thorough site inspection and assessment is paramount. Here are the essential steps: Roof Surface Cleaning : Ensure the existing roof surface is clean and free from debris. Evaluate Roof Condition and Support Structure : Examine the condition of the roof and its support structure. For steel purlins, check for rust levels. For wooden purlins, assess for termite penetration. Material Estimation and Preparation : Use the Onduline Roofing Calculator available on the main page to accurately estimate the required products an...