What are the types of Fibreglass?
Rachel Newton
Updated on May 17, 2026
What are the types of Fibreglass?
Table of some common fiberglass types
| Material | Specific gravity | Tensile strength MPa (ksi) |
|---|---|---|
| Polyester and Satin Weave Cloth Laminate 55% E-glass | 1.7 | 300 (43.5) |
| Polyester and Continuous Rovings Laminate 70% E-glass | 1.9 | 800 (116) |
| E-Glass Epoxy composite | 1.99 | 1,770 (257) |
| S-Glass Epoxy composite | 1.95 | 2,358 (342) |
What is the most common type of fiberglass material?
E-glass
Owens-Corning is still the major glass-fiber producer in the market today. The most common types of glass fiber used in fiberglass is E-glass, which is alumino-borosilicate glass with less than 1% w/w alkali oxides, mainly used for glass-reinforced plastics.
What type of fiberglass is strongest?
S-Glass (aluminosilicate), is a stronger type of glass with a tensile strength of 709 ksi, and compressive strength of 232 ksi. While it is stronger, it is also more expensive costing $24-40/lb. E-glass is affordable, but has relatively weak impact resistance when compared with the more expensive S-glass.
What are the two types of fiberglass?
Types and forms of fiberglass:
- A-glass: A glass is also called as alkali glass and is resistant to chemicals.
- C-glass: C-glass offers very good resistance to chemical impact and is also called as chemical glass.
- E-glass: It is also called as electrical glass and is a very good insulator of electricity.
How do you identify fiberglass?
Glass fiber can only be accurately identified using a polarized light microscope and by being aware of the possible interferences. The images below provide examples demonstrating the importance of polarized light and natural substances that can be confused with man-made mineral fiber.
How thick should fiberglass be?
How many layers of fiberglass cloth will it take to build up 1/4 inch of solid glass?
| Fiberglass Cloth Type / Weight | Thickness of a Single Layer** |
|---|---|
| Woven, 4 oz. | .008″ |
| Woven, 6 oz. | .010″ |
| Woven, 10 oz. | .016″ |
| Biaxial, 17 oz. | .035″ |
What type of fiberglass is used for boats?
E-Glass: This is the most commonly used fiberglass cloth in boatbuilding today. You can buy E-glass at a marine supply store, and bond it with polyester resin. It is made from molten plastic spun into fine fibers that are then either woven into cloth or loosely gathered into roving.
How can you tell if fiberglass is in the air?
Fiberglass can vary in smell or not smell at all. The smell coming from fiberglass is from the binder glue and the formaldehyde it releases into the air. Some of it has an almost unbearable burnt smell, to a sweet burnt smell, while other types remind me of urine.
How do you know if you inhaled fiberglass?
Short-term Exposure Direct contact with fiberglass or breathing airborne dust containing fiberglass may irritate the skin, eyes, nose, and throat. The symptoms of irritation are often nonspecific, temporary, and may include itching, coughing, or wheezing.
How many layers of fiberglass cloth do I need?
To build up 1/4″ of biaxial fiberglass cloth, you would need approximately 8 layers.
