Description
Product Overview
The UPTTHOW fiberglass reinforcement is a premium-grade fiber product engineered specifically for cement mortar and concrete applications. Each 1 lb package contains high‑tensile 19 mm glass fibers that are uniformly distributed to form a resilient mesh within the cement matrix. This mesh acts like a microscopic reinforcement grid, dramatically increasing the tensile strength of the mortar while simultaneously reducing the formation of fine surface cracks. The fibers are chemically inert, providing excellent resistance to alkaline environments typical of concrete, and they do not corrode over time. Packaged in a compact 11.77 × 6.61 × 2.95 inch box, the product is lightweight at 1 pound, making it easy to handle, store, and transport. The manufacturer, UPTTHOW, has a reputation for delivering consistent quality across its raw building material line, and this product is no exception. With a best‑seller rank of #18 in the Concrete category, it has earned strong customer confidence, reflected in a 4.6‑star rating from over 299 reviews. The product is suitable for both professional contractors and DIY enthusiasts who need a reliable solution for strengthening walls, floors, basements, and other structural elements that are exposed to moisture, impact, or freeze‑thaw cycles.
![[Product front view showing all components]](https://www.greatspots.store/wp-content/uploads/2026/08/7ff58bbb1ea34f538da6420d35a02615.jpg)
Usage
When mixed with standard sand and cement, the fiberglass fibers integrate seamlessly, requiring only a slight adjustment to mixing time—typically an additional 30 to 60 seconds of stirring to ensure even dispersion. The recommended dosage is one pound of fibers per cubic yard (27 cubic feet) of concrete, though areas subject to heavy impact or severe freeze‑thaw conditions may benefit from a modest increase in fiber content. This reinforcement is especially effective in wet environments such as basements, retaining walls, pond linings, and exterior floor slabs where water penetration can compromise structural integrity. It also excels in high‑traffic zones like garage floors, industrial workshops, and outdoor patios, where impact resistance and durability are paramount. The product’s waterproofing capability stems from the dense fiber network that fills micro‑pores in the cement, creating a barrier that significantly reduces water ingress. For optimal performance, combine the fibers with clean, well‑graded sand and a high‑quality Portland cement, add water gradually, and mix thoroughly until a uniform, homogenous paste is achieved.
Why Choose Us
Choosing UPTTHOW means selecting a partner that prioritizes material science, rigorous testing, and customer support. Each batch of fiberglass undergoes strict quality control procedures, including tensile strength testing and fiber length verification, to guarantee that the product meets or exceeds industry standards for concrete reinforcement. The brand’s commitment to sustainability is reflected in its manufacturing process, which utilizes recycled glass materials without compromising performance. In addition to product excellence, UPTTHOW offers responsive after‑sales service, providing technical guidance, mixing instructions, and troubleshooting assistance to ensure that every user achieves the desired results. The company’s extensive experience in raw building materials translates into a deep understanding of the challenges faced by contractors and homeowners alike, allowing them to deliver solutions that are both effective and easy to implement. With a proven track record of high customer satisfaction and a transparent supply chain, UPTTHOW stands out as a trustworthy source for high‑performance concrete additives.
Key Features
- Enhanced strength: Fiberglass fibers boost mortar tensile strength, reducing crack formation.
- Waterproof protection: Dense fiber network limits water penetration for dry, long‑lasting structures.
- Impact resistance: Reinforced concrete absorbs shocks, ideal for high‑traffic and heavy‑load areas.
- Easy application: Simple mix‑in process with only a slight increase in stirring time.
- Dedicated support: Access to expert advice and responsive customer service for any project.
FAQ
How much fiberglass should I add to a standard concrete mix?
The general guideline is one pound of 19 mm fiberglass per cubic yard (27 cubic feet) of concrete. For projects that will experience heavy impact, frequent freeze‑thaw cycles, or high moisture exposure, you may increase the dosage by up to 20 percent to further enhance durability.
Will the fiberglass affect the color or finish of my concrete?
The glass fibers are transparent and do not alter the color of the cement paste. When properly mixed, the fibers are evenly distributed and remain invisible on the surface, preserving the intended aesthetic of the concrete while providing internal reinforcement.
Can I use this product with pre‑mixed ready‑to‑use concrete?
Yes, the fiberglass can be added to ready‑mix concrete, but it is important to stir the mixture thoroughly for an additional 30‑60 seconds to ensure the fibers are fully integrated. This extra mixing time helps achieve a uniform distribution and maximizes the reinforcement benefits.
Is the product safe to handle and store?
The fibers are non‑hazardous and do not release harmful particles under normal handling conditions. Store the packages in a dry, cool place away from direct sunlight, and keep them out of reach of children. No special protective equipment is required for typical DIY use.
What warranty or guarantee does UPTTHOW provide?
UPTTHOW offers a limited warranty that guarantees the product will meet the stated specifications for tensile strength and fiber length for a period of 12 months from the date of purchase. If you encounter any issues related to product quality, the company’s customer service team will work with you to resolve the problem promptly.
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