Aloha leaves were especially designed to be laid directly on a roofing frame with a patented railing system. This leaf type offers two distinct technical advantages: full and effective exterior coverage in any weather, plus an exposed underside providing a more traditional aesthetic from the inside that proves popular in many countries. A built with fire-retardant material option is also available for this product. For roofing with a 30º minimum slope. Specs : High density polyethylene (HDPE) Thermo-formed UV-protection treated structure Highly resistant 100% recyclable Color: tobacco Dimensions: 39’’ x 24’’ one leaf Thickness: 0.029’’ Weight: 1 lb per leaf including the rail