Louisiana Residential Roofing (7-803) Practice Test

Wood shakes and shingles fit this statement because they are made from wood, which is naturally highly combustible. Without fire-resistant treatment, wood roofing materials burn more readily than nonwood options, making them the most susceptible to fire. Treating wood with fire-resistant coatings reduces that risk, but even with treatment they are still more fire-prone than noncombustible or inherently fire-resistant materials. In contrast, asphalt shingles, concrete tiles, and metal panels have built-in fire resistance or are noncombustible, so they do not fit the description of “most susceptible to fire unless treated.”