Aluminum patio cover kits, although a little expensive that other materials, has an edge. Aluminum is light weight, easy to install, durable, won’t rust and gives a neat and glossy look. It does not need repainting or varnishing, as other wood materials would. It is almost maintenance free and a simple cleaning with a garden hose would suffice. Aluminum is not affected by wind, sunlight, snow or rain. IN a patio cover made of aluminum, the rain water runs off very fast so it will not collect and damage the patio.