Yes, you can use aluminum strips for decking or fencing projects. Aluminum is a popular choice due to its durability, resistance to corrosion, and low maintenance requirements. It is lightweight, easy to install, and can withstand various weather conditions. Aluminum strips can be used to create modern and sleek designs, and they are also recyclable, making them an environmentally friendly option. However, it's important to ensure that the aluminum strips are of suitable thickness and quality to bear the weight and stress expected in your specific project.