A deck plank cover made from a plastic material, such as a vinyl or HDPE or Wood composite, wherein the deck plank cover is designed to be affixed to the top surface of a preexisting deck plank. The deck plank cover is useful for repairing or protecting mildly deteriorated or deteriorating wooden deck planks of typical wooden decks. The deck plank cover may be affixed directly to the top surface of the existing wooden deck planks, and serves to substantially protect the wooden deck planks from further exposure to the elements. The deck plank cover uses inwardly angled side portions and wood engaging fillets to adhere to the deck planks without the need for screws, nails, or adhesives.