King Plastic Lumber/Polymer

When you need lumber and polymer materials that combine wood-like workability with exceptional durability, King Plastic stands as a leading manufacturer of quality polymer sheets, giant slabs, and massive shapes since 1968. The company's lumber and polymer product lines deliver engineered solutions for demanding environments where traditional wood fails, offering the fabrication ease of lumber with the longevity of advanced polymers.

The K-Stran™ Manufacturing Advantage

King Plastic's proprietary K-Stran™ process represents the most advanced manufacturing process for superior flatness and consistency in polymer lumber production. This specialized technique ensures that every sheet maintains precise tolerances for thickness, color, and density—critical factors when working with polymer lumber on projects ranging from outdoor cabinetry to marine construction. The polymer sheets work like wood and are easy to fabricate with common woodworking tools and techniques, making them accessible to professionals and serious DIYers alike.

King StarBoard: The Industry Standard in Polymer Lumber

At the heart of King Plastic's lumber and polymer offerings sits the King StarBoard® family of products. King StarBoard® is the original marine-grade high-density polyethylene sheet and the leading brand in the marine industry, with the King name synonymous with quality to those who know plastics for more than thirty years. These HDPE sheets deliver where traditional lumber cannot: they will not rust, delaminate or rot when exposed to UV, humidity or water, making them ideal for coastal environments, outdoor kitchens, and marine applications.

The King StarBoard® product line extends beyond the original formulation to include specialized variants. King StarBoard® WG introduces a wood grain finish that offers wood-like style with marine-grade HDPE strength, great for outdoor cabinetry and furniture. For weight-sensitive applications, King StarBoard® XL provides a lightweight, marine-grade, cellular high-density polyethylene sheet that is up to 30% lighter than the original, while maintaining the durability standards the brand is known for.

Fabrication Freedom with Polymer Lumber

King Plastic's polymer lumber excels in versatility. The sheets are easy to fabricate using the same tools and techniques used in woodworking, handled like finished plywood with no finishing required. Whether you're cutting with standard saws, routing intricate patterns with CNC equipment, heat-forming complex angles, or creating welded assemblies, these polymer sheets respond to conventional woodworking methods. The material never needs painting or refinishing, dramatically reducing long-term maintenance compared to traditional lumber alternatives.

Applications Across Industries

King Plastic's lumber and polymer sheets serve diverse markets where durability matters. The company's polymers are sold worldwide to customers who fabricate products in the marine, signage, parks and recreation, retail, food processing, healthcare, industrial and other markets. From boat components and outdoor furniture to commercial cabinetry and playground equipment, these HDPE sheets provide lasting performance in high-abuse environments. The material meets stringent standards, with King StarBoard® made entirely from FDA and USDA approved material and meeting ASTM D4976 specifications.

For projects demanding alternatives to traditional lumber without sacrificing workability, King Plastic's polymer sheets deliver a proven solution backed by decades of manufacturing expertise and continuous innovation in HDPE technology.