What is the purpose of fiberglass mesh?

Fiberglass mesh is a neatly woven, crisscross pattern of fiberglass thread that is used to create new products such as tape and filters. When it is used as a filter, it is not uncommon for the manufacturer to spray a PVC coating to make it stronger and last longer. The most common place to find fiberglass mesh is in tape products.

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Drywall finishers use the mesh frequently. In fact, it is common to replace the paper tape used to float the joint between two pieces of drywall. The mesh that drywall finishers use comes on a roll just like paper drywall tape. The added benefit for the drywall finisher is to roll out the mesh over a great distance before having to apply the first coat of joint compound. Not only does it help them in this manner, but it also causes a stronger bond between the joint compound, the tape and the wall.

Drywall finishers also use this tape to patch holes. The most common hole in the drywall generally occurs where a doorknob has hit a wall too many times. If it is only slightly damaged, a couple of short pieces of the tape will be formed into a square and placed over the hole. A joint compound will then be applied directly to it. If the hole is too large to patch with fiberglass mesh alone, a piece of metal flashing can be added behind the tape before applying joint compound. Construction work is not the only use for fiberglass mesh.

As a filtering system, alkali resistant fiberglass mesh works really well. As the water flows through it, the mesh catches even the smallest impurities. In addition to this use, it can also be used as a mosquito net.

Fiberglass Mesh Details

As a key ingredient in GFRC, an alternative material now used in numerous construction and restoration projects due to its lightweight, durability, and flexibility, fiberglass mesh has an important role to play in helping GFRC deliver all these advantages.

What is Fiberglass Mesh?

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Fiberglass mesh consists of alkali-resistant glass fibers. The glass fibers used in the mesh have three to four times the tensile strength of steel. It does not stretch like that of polypropylene. Known as being high modulus, this means that it can be more effective at stopping cracks from appearing whereas concrete does not have the same ability and tends to crack.

The fiberglass mesh offers many other advantages:

• It will never rust so it does not have to be protected from the elements.
• It is inorganic so it does not pose any health risks.
• It is non combustible so it will not burn, giving it superior fire retardant properties that natural stone cannot match.
• It is weather resistant, giving it an unmatched durability for projects that require a material that will regularly face water, wind, and temperature changes.
• It helps the GFRC to be flexible enough to form into different shapes and be used for a wide array of applications. The final material can even replicate cast stone, granite, limestone, terra cotta and even wood, which is why it is often used for historical restorations and renovations.
• It is lightweight, offering many cost and time benefits for construction or restoration projects. Its lighter weight also means that it imposes less of a load on the structure.
• It provides for easier installation.

Many who have used GFRC also find it to be a more attractive material for their projects, opening up more design and application opportunities for the construction company, architect, and building owner.

How does Fiberglass Mesh Work?

The fiberglass mesh provides reinforcement through tensile and flexural strength, holding together the other ingredients, including concrete, aggregates, water, additives and polymers. The amount of fiberglass mesh in a mix depends on the requirements of the construction project for which it is being used.

The fiberglass mesh works as a central part of the GFRC manufacturing process, which is usually developed by using one of two methods. The hand lay-up method introduces the fiberglass mesh as a mat that is layered with the other materials through a manual process. The chopped-strand-spray method introduces the fiberglass mesh into the concrete mix as it is being sprayed into the custom mold. Either manufacturing process uses the fiberglass mesh to create high-quality, custom products.

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