To install aluminum sheets properly, follow these steps: 1. Prepare the surface by cleaning and leveling it. 2. Measure and cut the aluminum sheets to the required size using a metal saw or tin snips. 3. Apply a bead of construction adhesive along the edges of the surface where the sheets will be placed. 4. Position the aluminum sheet, ensuring it's aligned correctly. 5. Secure the sheet with screws or nails, using a washer to prevent tearing. 6. Seal the seams and edges with a weatherproof sealant to prevent water ingress. 7. Inspect the installation for any gaps or unevenness and make adjustments as needed. Always follow the manufacturer's guidelines and safety precautions while working with aluminum sheets.