The Lightweight Marine-Grade Cellular Sheet
Applications
- Cockpit Covers
- Deck Component and Equipment Mounts
- Doorstops and Thresholds
- Electronic Mountings
- Ladder Steps
- Recess Hatches and Bait Well Covers
- Tackle Centers
Photo Gallery
King StarBoard® XL is a lightweight, marine-grade, cellular high-density polyethylene sheet that is up to 30% lighter than the original King StarBoard®. It is the product of a proprietary process called K-Stran™, the most advanced manufacturing process for superior flatness and consistency. King StarBoard® XL has a matte finish on both sides of the sheet. It is environmentally stabilized to withstand the harshest outdoor conditions. King StarBoard® XL will not rust, delaminate or rot when exposed to UV, humidity or water. It is ideal for a variety of marine applications from boat components to equipment mounts, and looks good enough to use in high-visibility applications where structural strength and a finished edge are not important. For maximum versatility, standard colors are made to coordinate with the original King StarBoard®. The polymer sheet never needs painting or refinishing, works like wood, and is easy to fabricate with common woodworking tools and techniques.
King StarBoard XL is upgradable to King MicroShield® with an advanced antimicrobial technology for protecting the product surface against stain and odor causing bacteria, algae and fungi.*
For more information about King MicroShield®, please visit product page.
Disclaimer: King MicroShield® may affect color.
Standard Sheet Size
| in: | 60″ x 96″ |
| mm: | 1524″ x 2438″ |
Standard Gauges
| in: | 1/4″ | 3/8″ | 1/2″ | 3/4″ |
| mm: | 6.4mm | 9.53mm | 12.7mm | 19mm |
Approximate Weight
| lbs: | 40 lbs | 61.5 lbs | 80 lbs | 120 lbs |
| kg: | 18.14kg | 27.89kg | 36.28kg | 54.43kg |
Tolerance information:
Gauges 1/4″ up to 3/4” ± 5% | Length and width plus only at room temperature
Custom sheet sizes, gauges and colors available
| Properties | Units | ASTM | Nominal Values |
| Density | g/cc | D792 | 0.77 |
| Tensile Strength @ Yield | psi | D638 | >3,300 |
| Tensile Modulus | psi | D638 | 165,000 |
| Elongation @ Yield | % | D638 | 9.6 |
| Flexural Modulus | psi | D790 | 130,000 |
| Flexural Stress @ 5% Strain | psi | D790 | 2,990 |
| Compressive Properties 10% Strain | psi | D695 | 2,910 |
| Durometer | Shore D | D2240 | 64.9 |
| Izod Impact Resistance | ft.lbs./in.2 | D256 | 1.4 |
| Heat Deflection Temp. 66 psi | ºC (ºF) | D648 | 87ºC (188ºF) |
| Screw Holding Strength | lbs | D1761 | 325 |
| Flammability | Rating | UL94 | HB |
All values are determined on specimens prepared according to ASTM.
Nominal values should not be interpreted as specifications.
King StarBoard® XL is made entirely from FDA and USDA approved material.
- Unique (closed-cell) cellular marine-grade sheet.
- Weighs up to 30% less with the same surface finish as King StarBoard®.
- Ideal for fabricating any boat part where high structural strength or a finished edge is not required.
- Precise tolerances ensure consistent color, thickness and density–even for thicker gauges.
- Holds staples and screws securely.
- Environmentally stabilized for harsh sun and tough marine environments.
- Will not rot, swell, splinter or delaminate when exposed to humidity or water.
- Resists odor, even in wet environments.
- Easy to clean and never needs refinishing.
- Matte-textured finish on both sides.
- Easy to fabricate using standard woodworking tools.
- Available in eight standard King StarBoard® colors to match or accent any gelcoat.
- Unlimited custom/proprietary colors.
- Forms easily for smooth curves.
- Available in large sheets up to 60” 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.
- Has passed the Federal Motor Vehicle Standard 302 fire test required for use in motor vehicles, including motor homes.
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