Understanding the Differences Between Fibreglass Mat and Fibreglass Cloth

Posted by Michael Levero on 27th Apr 2023

As far as fiberglass reinforcement materials are concerned, fiberglass mat and fiberglass cloth are two commonly used alternatives. Although they may appear comparable at first glance, there are significant differences between them that make each more appropriate for specific applications. In this article, we'll take a deep dive into the contrasts between fiberglass mat and fiberglass cloth, their unique features, and their individual benefits.

What is a Fiberglass Mat?

Fiberglass mat is a non-woven substance that is made up of randomly oriented chopped strands of glass held together with a binder. This substance is designed to offer a high level of strength and rigidity to a surface, making it a perfect reinforcement material for flat or curved surfaces. Fiberglass mat is often utilized in applications where a smooth surface is required, such as boat building, automotive bodywork, or general repair work.

One of the benefits of   fiberglass mat is that it is relatively easy to handle. It can be effortlessly cut to size, and it conforms well to complex shapes. Furthermore, fiberglass mat can be applied in multiple layers to provide extra strength and thickness to a surface.

What is Fiberglass Cloth?

Fiberglass cloth, on the other hand, is a woven material made from glass fibers. It comes in various weights and weaves, with some varieties having a plain weave while others have a twill weave. The strength and flexibility of the cloth depend on the weave pattern and weight used.

Fiberglass cloth is frequently employed in applications where a high degree of strength is required, such as in aircraft construction, high-performance racing vehicles, and other industrial or commercial uses. It is also utilized for reinforcing seams and corners, where additional strength is required.

Easy to Shape: Fiberglass Cloth Roll is easy to drape over complex shapes, making it perfect for use in applications where a more intricate pattern is required.

Easy to Cut: Fiberglass Cloth Roll is simple to cut to size and can be applied in multiple layers to provide additional strength and thickness to a surface.

Differences between Fiberglass Mat and Fiberglass Cloth

Although both fiberglass mat and fiberglass fabric are made from glass fibers, there are several key differences between the two.

Manufacturing process:

Glass fibers are chopped, and then resin is used to glue the pieces together to create a fiberglass mat. Conversely, glass fibers are woven together to create fiberglass cloth.


In general, fiberglass fabric is more durable than fiberglass mat. The cloth's weave design offers greater tensile strength and longevity, which makes it a superior option for applications requiring a high level of strength.


Compared to fiberglass fabric, fiberglass mat is less flexible. Although it can adapt to complex shapes, fiberglass cloth is more rigid and less flexible.

Surface finish:

Fiberglass mat has a completed, smooth surface that makes it perfect for applications that call for a finished surface. On the other hand, fiberglass cloth can produce a more textured surface finish.


Fiberglass cloth is generally lighter than fiberglass mat, which can make it a better choice for applications where weight is a concern.


Q1. Is it possible to combine fiberglass mat and fiberglass cloth?

Ans: Yes, a surface can be strengthened and made thicker by combining fiberglass mat with fiberglass fabric.

Q2. Which is more effective for making boats: fiberglass cloth or fiberglass mat?

Ans: Fiberglass mat is typically preferable for boat construction because it offers a smooth surface finish perfect for maritime applications.

Q3. Can fiberglass mat be utilized for corner and seam reinforcement?

Ans: While fiberglass mat can be used to reinforce seams and corners, fiberglass cloth is typically a superior option because of its increased strength for these types of applications.

Q4. What are the uses of Fiberglass Cloth Roll?

Ans: Fiberglass Cloth Roll is used in aircraft construction, racing vehicles, and other industrial or commercial applications. It is also utilized for reinforcing seams and corners.