Composite railing, a blend of recycled plastic and wood fibers, is known for its exceptional strength, durability and beauty. More and more homeowners these days are choosing composite over traditional wood railing for its low- maintenance benefits. Composite railing doesn't rot, warp, twist or crack. There are several reasons why a composite decking handrail is an excellent idea: More finished appearance, stain resistant, no splitting, no mold and fade resistant.