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Fiberglass Flat Sheet | FRP Pultrusion Sheets | Liberty Pultrusions

Structural Pultruded FRP Flat Sheets

Pultruded fiberglass flat sheets come in several sizes, ranging from 24 x 1/8 to 48 x 1

Liberty Pultrusions is a leading manufacturer of high quality, durable, lightweight structural FRP Flat Sheets, which are used in many types of applications. Pultruded Fiberglass Flat Sheets come in various thicknesses and dimensions.

FRP Pultruded Flat Sheets are manufactured to be corrosion resistant, non-conductive, non-magnetic, among other features. They can also be made to be fire retardant.

Our FRP Flat Sheets are produced using the pultrusion process, which allows us to customize the flat sheet according to your specifications. The resin system and glass content properties mixture makes pultrusion material easier to work with, longer lasting and a safer product for the end user than other materials.


Because pultrusion material is lightweight and strong, it is often much more efficient than steel, aluminum or structural timber. Pultrusion is up to 75% lighter than steel but just as strong.

Flat Sheets Sizes

24 x 1/8
24 x 3/16
24 x 1/4
24 x 3/8
24 x 1/2
24 x 5/8
24 x 3/4
24 x 1
48 x 3/16
48 x 1/4
48 x 3/8
48 x 1/2
48 x 5/8
48 x 3/4
48 x 1
*Additional widths available

Here are some other key features of Pultruded Flat Sheets:

  • Corrosion resistant
  • Non-conductive (thermally & electrically)
  • Lightweight
  • High-strenth
  • Non-magnetic electromagnetic transparency
  • Dimensional stability
  • Long life cycle
  • Lower long-term cost
  • Low maintenance

Polyglas structural flat sheets are offered in three standard systems:

Polyglas ‘F’ — Fire retardant, polyester, dark slate gray color. General purpose composite manufactured in a fire retardant isophthalic polyester resin system. Standard colors are gray and hazard yellow.

Polyglas ‘C’ — Fire retardant, vinyl ester, beige color. A superior grade composite manufactured in a fire retardant and highly corrosion resistant vinyl ester resin system. Standard color is beige.

Polyglas ‘M’ — Non-fire retardant, polyester, olive color. General purpose composite manufactured with a non-fire retardant isophthalic polyester resin system. Standard color is olive green.


Liberty Pultrusion also manufactures Pultruded Electrical Shapes.


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