A bendable substrate with a hardboard face that can be formed first and laminated last.

Flexboard is a bendable product designed for use in all types of radius projects. It consists of a core of kerfed particleboard with an .080" thick hardboard face. Flexboard will produce a 10-inch radius that allows for quick and easily fabrication without the need for sanding, patching or multiple layers and requires no special installation methods. It helps reduce labor cost, provides a uniform surface with many face options and improves quality.

Flexboard is a superior alternative to bending plywood for radius fabrication. It is calibrated for uniform thickness throughout the manufacturing process. Consistent thickness helps achieve excellent quality results without the need for putty, bondo and sanding that increases labor requirements usually needed when using bending plywood. Flexboard's seaming abilities allow for easy splicing in both the vertical and horizontal direction. Its substrate allows for repeatable symmetrical bending.

Flexboard is an eco friendly product with a NAF face material and a particleboard core material made from 100% recovered and recycled fiber content. Flexboard can help qualify for LEED credits MR 4.1 and MR 4.2. It is also available as an FSC®. Flexboard is optionally available in a No Added Formaldehyde version called FlexGreen (see additional information under that product).

Photo Courtesy of: Ultrawood

Flexboard is a great product for architectural panels. Its stable hardboard face allows the flat attachment of face veneer materials, by use of hot or cold press application. Either single-ply or paper-backed veneer faces can be laminated using normal pressure, heat and time settings to the Flexboard. It can then be machined, sanded and then bent into the desired shape. It can be held in shape by gluing to a ribbed frame or applying a back to lock into shape.

Flexboard's hardboard surface is ideal for conventional fabrication and then applying veneer, HPL, metal and other similar materials. When laminating after fabrication, the use of contact adhesive with normal pressure is adequate. Firm hand pressure or moderate pressure with a J-roller works well. It is also very suitable for painting or application of graphic materials. When using a PVA glue, make sure the glue is transferred to both materials and that adequate uniform pressure can be applied for the required amount of time.

Flexboard is available in nominal 4' X 8', 8' X 4', 4' x 10', 10' x 4', 4' x 12' and 12' x 4' panel sizes with a particleboard core and an .080" thick hardboard face. Additional core materials are available based on sizes and availability.


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“We saved about four days worth of labor on a recent project by using TimberFlex (Over a 70% reduction). Not only did we produce a cleaner product, but we were able to move on to the next project ahead of schedule.

We used to kerf our own boards, something that takes time and requires very little skill. Interior Products allowed us to remove this step and focus our skills where they are really needed.

The Interior Product's line is great because it turns a tight radius and is quick and easy to use.

Less material, less thinking time, less labor = less overall cost.

Before, we would take small slats (wide ripped out of a 1 x), faces touching, backs out, build a form around it, then fill the gaps with Bondo, sand and smooth out. Now, we simply cut ribs to specified shape and apply the TimberFlex. It doesn't get much easier.

Labor is always one of our biggest concerns. We don't mind paying a little more up front, if the result is an overall reduction of labor in the end. The use of TimberFlex eliminates the trial and error that we previously experienced with old methods.”
Michael Phillips, Mid-American Precast Inc.