How to Use Fiberglass Casting Tape

In the realm of orthopedic bracing and casting, fiberglass casting tape stands out as a versatile and essential tool. This blog post will explore the intricacies of fiberglass casting tape, addressing common questions and highlighting its various applications.

What is Fiberglass Casting Tape?

Fiberglass casting tape is a robust, lightweight, and durable material used in the medical field to create casts and braces for orthopedic injuries. It comprises a knitted fiberglass fabric impregnated with a water-activated resin. When activated, this resin hardens, forming a solid, supportive structure around the injured area.

Uses of Fiberglass Casting Tape

Fiberglass casting tape is employed in a wide array of orthopedic situations, including:

  • Fracture Management: It is widely used to immobilize and support broken bones, facilitating proper healing.
  • Post-Surgery Support: Following certain orthopedic surgeries, casting tape provides stability and protection to the surgical site.
  • Sprains and Strains: It is also utilized to treat and support sprains, strains, and other soft tissue injuries.

How Does Fiberglass Casting Tape Work?

The functionality of fiberglass casting tape is straightforward yet effective. Soaking the tape in water activates the resin, making it pliable for a brief period. During this time, a medical professional can mold and shape the tape around the injured area. As it dries, the tape hardens, creating a rigid and protective cast or brace.

Applying a Fiberglass Orthopedic Cast

The application of a fiberglass orthopedic cast should be performed by a trained medical professional and typically involves the following steps:

  1. Prepare the Materials: Gather necessary items, including fiberglass casting tape, scissors, water, and gloves.
  2. Protect the Skin: Apply a stockinette or padding to the skin to prevent irritation.
  3. Activate the Tape: Submerge the casting tape in water to activate the resin.
  4. Mold the Cast: Carefully wrap and mold the activated tape around the injured area, ensuring it is snug but not overly tight.
  5. Allow to Dry: Let the cast dry and harden completely before use.

Waterproofing Fiberglass Casting Tape

While fiberglass casting tape itself is not waterproof, there are waterproof cast liners and covers available. These accessories are designed to keep the cast dry during activities such as swimming or showering, enhancing comfort and hygiene for the wearer.


Fiberglass casting tape is an invaluable asset in orthopedics, offering support and protection for various injuries. When applied properly and paired with waterproof options, it can significantly aid patients in their recovery journey.

Always consult with a medical professional for accurate diagnosis and treatment of orthopedic conditions.

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