Carbon Fiber vs. Black Fiberglass

Carbon fiber compared to its inexpensive alternative.

Would you like to give your project a carbon fiber look for half the price? Black Fiberglass might be the product for you, but before you start, let’s uncover the similarities and differences between carbon fiber and Black Fiberglass.

Black Fiberglass is an E-Glass that is woven and dyed black to look like a 3K Twill Weave carbon fiber. This fabric is for cosmetic applications only and does not have the strength properties of a real carbon fiber.

Can you tell the difference?
IN THE IMAGE ON THE RIGHT:  (left) #2212 Black Fiberglass, (right) #1069 3K, 2×2 Twill Weave Carbon Fiber Fabric

The Look

You can see in the image that the Black Fiberglass and the Carbon Fiber look fairly similar. They both have a twill weave and the color is pretty close.  The black fiberglass has a slightly smaller weave. It is also apparent that the Black Fiberglass has more of a matte finish and is lacking some of the gloss/highlight attributes of a real carbon fiber.

The Feel

The Black Fiberglass seems to have a ‘tighter’ weave. When compared to a carbon fiber, the Black Fiberglass seems more rigid. It is harder to skew or warp the weave pattern when performing a hand lay-up.

Before you start your next project, there are a few questions to ask:

  • Do I want it to be more cosmetic than structural?
  • Do I care if some people can tell its dyed fiberglass and not real carbon fiber?
  • Do I want a carbon fiber look without spending a lot of money?

At Fibre Glast, we want to help you get the right products for your application. Do you have more questions about Black Fiberglass? Call 1.800.838.8984 or visit


1 mike { 10.06.12 at 3:48 am }

can i used regular fiberglass resin for black fiber glass to produce a part from a mold? thanks

2 Michael Onofrietti { 11.07.12 at 12:18 am }

I am updating a classic Alfa Romeo Spider Veloce.
What I need help with is deciding whether to use Kevlar, Carbon Fiber or a blend. What I would like to do is use the fabric on the front end of the car in lieu of a bra to protect it from chips etc. and what type of adhesive I should use, epoxy or an appropriate resin. I f you could offer some guidence I would be grateful.

Mike Onofrietti

3 Randy { 04.30.15 at 6:42 am }

Does black fiberglass have the same properties as regular E-Glass. Is S-Glass available dyed black?

4 { 05.12.15 at 12:41 pm }

Yes, the properties of Black Fiberglass are the same as regular e-glass. S-Glass can be produced, however it is not typically available and there would be a significant minimum order quantity.

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