Description

King StarBoard® is the original marine-grade high-density polyethylene sheet and the industry standard. It is the product of a proprietary process called K-Stran™, the most advanced manufacturing process for superior flatness and consistency. King StarBoard® is environmentally stabilized to withstand the harshest marine conditions. It will not warp, rot, or delaminate when exposed to humidity or water. King StarBoard® is easy to fabricate with standard woodworking tools and requires little or no finishing.

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 or B Flame/Smoke 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.

Where to Buy

Specifications

Standard Sheet Sizes

in: 48” x 96” 54” x 96”
mm: 1219mm x 2438mm 1371.6mm x 2438mm
Colors Only in 1-1/2” gauge, all standard colors available All standard colors available

Standard Gauges

in: 1/4” 3/8” 1/2” 3/4” 1” 1-1/2”
mm: 6.4mm 9.53mm 12.7mm 19mm 25.4mm 38mm

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

lbs: 240 lbs
kg: 108.6kg

Approximate Weight 54 x 96

lbs: 45 lbs 67.5 lbs 90 lbs 135 lbs 180 lbs
kg: 20kg 31kg 41kg 61kg 81kg

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

Physical Properties
Properties Units ASTM Nominal Values
Density g/cc D1505 0.955
Tensile Strength @ Yield psi D638 >4,100
Tensile Modulus psi D638 255,000
Elongation @ Break % D638 >600
Elongation @ Yield % D638 9.8
Flexural Modulus psi D790 185,000
Flexural Stress @ 5% Strain psi D790 3,810
Compressive Properties 10% Strain psi D695 4,950
Durometer Shore D D2240 68
Tensile Impact ft.lbs./in.2 D1822 115
Izod Impact Resistance ft.lbs./in.2  D256 1.1
Brittleness Temp. ºC (ºF) D746 <-76ºC (<-105ºF)
Vicat Softening Temp. ºC (ºF)  D1525  123ºC (253ºF)
Heat Deflection Temp. 66 psi ºC (ºF)  D648  75ºC (167ºF)
Screw and Nail Withdrawal lbs D1761 657 & 63
Flammability Rating UL94 HB

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.

Colors

Additional Information
  • 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.