Deckboards

Deckboards are the visible planks that form the surface of outdoor decks. They are installed over a structural frame of joists and posts and are designed to withstand foot traffic, weather, and temperature fluctuations. Deckboards can be made from wood, composites, or other engineered materials.

Wood deckboards come from softwoods such as pressure-treated pine, cedar, or redwood, and from hardwoods including tropical species. Composite deckboards blend wood fiber with plastic, while solid plastic (PVC) boards are entirely plastic. Common widths range from about 3.5 inches to 6 inches, with thicknesses often around 1 inch ( marketed as 5/4 inch). Profiles include square-edge and grooved boards intended for use with hidden fasteners.

Installation involves attaching the deckboards to a substructure of joists, typically spaced 12 to 16 inches on center. Gaps between boards—usually around 1/8 inch to 3/16 inch—allow drainage and airflow. Boards may be face-fastened with screws or nails, or installed with hidden fastening systems that clip to the edges.

Wood deckboards require maintenance to protect against moisture, rot, and UV damage. This often involves sealing, staining, or painting and periodic cleaning. Composite and PVC boards generally require less maintenance but can fade, scratch, or warp and may be susceptible to staining from mold or mildew in shaded areas.

Environmental considerations include choosing sustainably harvested wood certified by bodies such as the Forest Stewardship Council (FSC) and selecting recycled-content composites. Lifespan varies by material and climate; wood may last 15 to 25 years with proper care, while composites often carry longer warranties but can be more expensive.

Care should be taken to ensure proper drainage, avoid overheating in direct sun, and follow manufacturer recommendations for fasteners and cleaning to extend deckboard life.