Jasper Plastics

Manufacturing Behind The Scenes For Leading Brands

Design Board

Providing The Best HDU Solution



The Features and Benefits of Design Board®

Tough, weather resistant HDU Design Board® is a lightweight, high density polyurethane board (HDU). It’s closed cell structure makes it completely waterproof, allowing for the application of almost any finish. Design Board® can withstand all weather conditions and is idea for the sign industry.

-Can be routed, carved, and sandblasted more efficiently than wood substrates and other high density urethane products on the market.

-Moisture and insect resistant

-Extremely durable for exterior use

-Resistant to cracking, warp, decay and rot

-Easy to prime and finish-saving valuable time and money during sign construction

-Great Cell Structure

-Saves Redwood Forests


Design Board® comes in convenient densities – 10, 15 and 18 pcf (pounds per cubic foot) Your choice of density is determined by the desired surface quality and strength. While all Design Board has fine, consistent cell structure, the 18 pcf has the best surface for smoothness and is the strongest of the densities.

Design Board® has a very high strength to weight ratio and is an excellent substitute for wood, aluminum, wax or steel. Design Board® machines easily with conventional woodworking and carving chisels. It is non-corrosive, non-abrasive and lox dust generating when machined. HDU is water-resistant and is not affected by mold or mildew.

Design Board® can be painted. Depending on the desired result, some surface filling may be retired. Spackling pastes are ideal for filling and sanding to achieve extra smooth finish.  Design Board® is compatible with most water-based and solvent-based paints. While polyurethane foam is resistant to most solvents, it is not resistant to chlorinated solvents.


Superior Manufacturing Process…Dependability You Can Trust

  • making design boardFor over thirty years craftsmen at Jasper Plastics Solutions have served the industry with quality HUD manufacturing. Most HDU boards are made in a “bun process”. Design Board® is made each board at a time insuring less chance for air voids, inconsistent thickness or variation in density. In fact each Design Board® has a serial number that can be tracked back to the beginning raw material specs. Design Board® offers quality that gives a sign maker confidence you will have a good board from start to finish.



  Density PCF
  10 15 18
Flexural Strength (ASTM D790 Method 1) psi 370 680 980
Flexural Modulous (ASTM D790 Method) psi 11,700 20,100 28,900
Compressive Strength (ASTM D1621)psi 250 530 790
Shore D Hardness (ASTM D 2240) D20 D32 D40
Shore A Hardness (ASTM D 2240) A70
Thermal Expansion in/in/deg.  F(ASTM D696 modified) 0.00003 0.000029 0.000031


Available Sizes

-.5” – .75” – 1.5” – 2” thickness

-10lb – 15lb – 18lb densities

-4’x8’ – 4’x10’ – 5’x8’ – 5’x10’ sheet sizes

-Custom product available too.



-Typically in stock and ready for immediate shipment – all standard sizes and densities (Contact your local distributor)

-The #1HDU product offering excellent performance at a competitive price

-Each board is oversized for safety in handling and to ensure full dimensional working surface

– Over 30 years of experience in HDU industry specializing in sheet and component products

Design Cap Finials

Sizes – Finials are standard in the following sizes:

-4” Acorn – 4 13/16 Tall and 3 ¼ Wide x3 Base – Part# 1680978f

-6” Acorn – 7 3/16” x 4 7/8 Wide x 4 9/16 Base – Part# 1680979F

-4” Oval – 5 11/16 Tall x 2 9/16 Wide x 3 1/8 Base – Part# 1672784F

-6” Oval – 8 5/16 Tall x 4 1/16 Wide x 4 13/16 Base – Part# 1680980F

-4” Ball – 4 3/8 Tall x 3 5/16 Wide x 3 3/16 Base – Part# 1680989F

-6” Ball 6 15/16 Tall x 5 1/8 Wide x 5 1/8 Base – Part# 1680977F

Custom volume finials available.

Design Caps from Jasper Plastic Solutions are molded to perfection (not machined) giving them a smooth surface like no other final in the sign industry.

Design Caps are primed sanded and ready for painting. Made of solid, high density urethane, Jasper Plastic Solutions finials have the same qualities as Design Board® sheet product. They will not rot, decay or crack. All caps come with a 3/16” lag screw. Sized to fit nominal 4×4 (actual 3.5 x 3.5) and 6×6 (actual sized 5.5 x 5.5) posts.



-Jasper Plastics Solutions warrants against defects in the materials in Design Board® for a period of five years from the date of original purchase.

-The warranties in the agreement are in lieu of all other warranties and conditions, express or implied. The warranties or conditions of merchantability or fitness for a particular use are expressly disclaimed.


hand crafted signsMolded Signage

-Jasper Plastic Solutions has the unique ability to “tool up” your special sign project in HDU. When you have a project that requires multiple signs of the same design, you or we can build a pattern and provide you sign blanks with a base primer, ready for you to finish in your paint of choice.

-The tooling charge is relatively inexpensive compared to the cost of sandblasting and or routing your design over and over again.

-Contact us with your project for a custom quote on tooling and piece price. We can provide timely quotes from hand drawings, CAD files and even napkin sketches. Product lead times are normally 4-6 weeks.



We would be happy to provide more details. Call us at 574.457.2062 or email us today!


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