King StarBoard® Logo in White

The Original Marine-Grade Polymer Sheet

Applications

  • Bow Pulpits
  • Countertops
  • Frames and Trim
  • Furniture
  • Grab Rails and Handles
  • Hatches and Doors
  • Rod and Cup Holders
  • Steps and Dock Boxes
  • Tray Tables

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King StarBoard® is the original marine-grade high-density polyethylene sheet and the leading brand in the marine industry. The King name is synonymous with quality to those who know plastics, and the King StarBoard® brand has been helping pros build better boats for more than thirty-years. It is the product of a proprietary process called K-Stran™, the most advanced manufacturing process for superior flatness and consistency. King StarBoard® has a matte finish on both sides of the sheet. It is environmentally stabilized to withstand the harshest outdoor conditions. King StarBoard® will not rust, delaminate or rot when exposed to UV, humidity or water. It is ideal for a variety of marine applications from replacing wood, to building boat components and furniture. The polymer sheet never needs painting or refinishing, works like wood, and is easy to fabricate with common woodworking tools and techniques.

King StarBoard® is upgradable to King MicroShield® with an advanced antimicrobial technology for protecting the product surface against stain and odor causing bacteria, algae and fungi.*

King StarBoard® is upgradable with King FlameShield, for ASTM E-84 Class A Flame Compliance and CAN/ULC-S102 for Canadian Compliance.

For more information about King MicroShield® and King FlameShield, please visit those product pages.

Disclaimer: King MicroShield® may affect color. King FlameShield may affect finish and color.

*For bacteriostatic, fungistatic, & algistatic properties. This product is exempt from registration under 40 CFR 152.25(a). King MicroShield® effectiveness verified by ISO and ASTM standards. This product does not protect users or others from disease-causing bacteria. Always clean this product thoroughly after use.

Standard Sheet Sizes

in:48” x 96”54” x 96”
mm:1219mm x 2438mm1371.6mm x 2438mm
ColorsOnly in 1-1/2” gauge, all standard colors available
1/4″ up to 1″ gauges available in black or white
All standard colors available

Standard Gauges

in:1/4”3/8”1/2”3/4”1”1-1/2”
mm:6.4mm9.53mm12.7mm19mm25.4mm38mm

Approximate Weight 48 x 96 (only in 1-1/2″ gauge)

lbs:40 lbs60 lbs80 lbs120 lbs160 lbs240 lbs
kg:18.14 kg27.2 kg36.3 kg54.4 kg72.5 kg108.8 kg

Approximate Weight 54 x 96

lbs:45 lbs67.5 lbs90 lbs135 lbs180 lbs
kg:20.4 kg30.6 kg40.8 kg61.2 kg81.6 kg

Tolerance information:
Gauges 1/4″ up to 1-1/2” ± 5% | Length and width plus only at room temperature

Custom sheet sizes, gauges and colors available

PropertiesUnitsASTMNominal Values
Densityg/ccD15050.955
Tensile Strength @ YieldpsiD638>4,100
Tensile ModuluspsiD638255,000
Elongation @ Break%D638>600
Elongation @ Yield%D6389.8
Flexural ModuluspsiD790185,000
Flexural Stress @ 5% StrainpsiD7903,810
Compressive Properties 10% StrainpsiD6954,950
DurometerShore DD224068
Tensile Impactft.lbs./in.2D1822115
Izod Impact Resistanceft.lbs./in.2 D2561.1
Brittleness Temp.ºC (ºF)D746<-76ºC (<-105ºF)
Vicat Softening Temp.ºC (ºF) D1525 123ºC (253ºF)
Heat Deflection Temp. 66 psiºC (ºF) D648 75ºC (167ºF)
Screw and Nail WithdrawallbsD1761657 & 63
FlammabilityRatingUL94HB

All values are determined on specimens prepared according to ASTM standards.
Nominal values should not be interpreted as specifications.
King StarBoard® is made entirely from FDA and USDA approved material.
King StarBoard® meets ASTM D4976.
The raw material used to make King StarBoard® does not contain BPA’s or Phthalates.

  • Made of the finest polymers available, using our proprietary K-Stran™ process for superior flatness and consistency.
  • Environmentally stabilized for harsh sun and tough marine environments.
  • Will not rot, swell, splinter or delaminate when exposed to humidity or water.
  • Precise tolerances ensure consistent color, thickness and density, even for special thickness gauges and custom
    order colors.
  • Easy to fabricate with standard woodworking tools and requires little or no finishing.
  • Available in eight standard colors to match or accent any gelcoat.
  • Unlimited custom/proprietary colors.
  • Durable matte-textured surface on both sides.
  • Easy to clean and never needs refinishing.
  • Edges finish cleanly and easily.
  • Forms easily for smooth curves.
  • Has passed the Federal Motor Vehicle Standard 302 fire test required for use in motor vehicles, including motor homes.
  • Available in large sheets up to 54” x 96” or 48” x 96”.
  • Custom sheet sizes available.
  • Shipped with a protective masking on one side.
  • Proven on thousands of boats and yachts.
  • Experienced boat builders and boaters know the King StarBoard® brand and trust it more than any other.

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