Palight Trimboard
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Here's a Basic Installation Overview

The information presented below provides a basic overview of how to work with Palight Trimboard.

For complete details, download the detailed Palight Trimboard Installation Guide.
  Download Palight Trimboard Installation Guide


Storage and Handling

  • Store Palight Trimboard on a flat and level surface. Because Palight Trimboard products are more flexible than wood, they may conform to uneven surfaces.
  • Palight Trimboard has a density comparable to pine and should be handled as pine would be handled to avoid damage.
  • Palight Trimboard pallets are shipped from the manufacturer with a protective vinyl cover. If the pallet cover has been removed, take additional care to keep product free of dirt and debris at job site.

Palight Trimboard can be cut with the same tools used to cut lumber. Carbide-tipped blades that are designed to cut wood perform well. Avoid using fine-tooth metal cutting blades. Rough edges from cutting may be caused by excessive friction, inadequate board support, worn blades, or incorrect tools.

Palight can be drilled with carbide-tipped bits using twist drills recommended for metals. The minimum distance from the edge should be 2 times the hole diameter. In an effort to reduce heat build up during drilling of thicker Palight Trimboard or sheets, it may be necessary to periodically remove the drill bit from the Palight material.

Milling & Routing
Palight can be milled by using standard milling machines. Palight material can be easily routed using multi-fluted carbide tools on standard woodworking routers. Standard tools and machines can be utilized with no need to alter equipment. Adjust feed and speed rates as needed to achieve the best edge finish on the Palight parts.

Thermal Expansion and Contraction
As with most plastics, Palight Trimboard will expand and contract with an increase or reduction in temperature. This material property is known as the coefficient of linear thermal expansion (CLTE). By comparison, wood expands and contracts due to changes in moisture content.

Because Palight Trimboard can be used in a wide variety of indoor and outdoor applications, linear thermal expansion and contraction should be considered during the fabrication and installation of the material. That means it is important to take in to account the temperature of both the product and the environment when determining gapping during installation.

When properly fastened, allow 1/8 inch per 18 foot of Palight Trimboard for expansion and contraction. Joints between pieces of Palight should be glued to eliminate joint separation. When gaps are glued on a long run of Palight, allow space for expansion and contraction at each end of the run.

Palight Trimboard should not be used in applications or climatic conditions that exceed 140° F (60° C) ambient or surface temperature. At this temperature, Palight Trimboard will soften and permanently deform.

For this reason, paint color selection must also be considered, because darker colors absorb heat more than lighter colors and can easily exceed the maximum allowable temperature of 140° F (60° C).


  • For best results, use Cortex® fasteners and plugs.
  • Standard nail guns also work with Palight Trimboard products. Use a highly durable fastener such as hot dipped galvanized or stainless steel.
  • Staples, small brads and wire nails must not be used.
  • Fasteners should be long enough to penetrate the solid wood substrate a minimum of 1-1/2".
  • Palight should be fastened to a flat, solid substrate. Fastening Palight into hollow or uneven areas must be avoided.
  • Pre-drilling is not required when using Cortex fasteners or nails, unless the product is installed in low temperatures – typically 40°F (5° C) or lower.
  • 3/8" and 1/2" sheet products are not intended to be ripped into trim pieces.These profiles must be glued to a substrate and mechanically fastened.

Palight products must not be used in load bearing applications, but may be used in spanned applications such as soffits and ceilings. 

Gluing and Bonding of Palight Trimboard
Palight material can readily be bonded to itself or other materials. Commercially available adhesives that are suitable for bonding rigid PVC materials can be used for this purpose.

Palight Trimboard does not require paint for protection, but may be painted to achieve a desired color. Painting Palight is extremely similar to painting wood, however, there are some important and distinct differences that must be accounted for when painting Palight.

For the most up-to-date, detailed usage and installation information, download our detailed installation guide for Palight Trimboard. (Download)