---
product_id: 373253480
title: "Fiberglass for Cement Mortar Concrete Reinforcement (19MM)-1lb | 6/9/19mm length options, 1/2/4 lb weight options, for anti-seepage and anti-cracking cement mix for building walls garden"
brand: "uptthow"
price: "€ 57.32"
currency: EUR
in_stock: true
category: "Uptthow"
url: https://www.desertcart.hr/products/373253480-fiberglass-for-cement-mortar-concrete-reinforcement-19mm-1lb-6-9
store_origin: HR
region: Croatia
---

# Waterproof & anti-seepage cement mix 1 lb pack covers 1 cubic yard concrete 19mm fiber length for optimal reinforcement Fiberglass for Cement Mortar Concrete Reinforcement (19MM)-1lb | 6/9/19mm length options, 1/2/4 lb weight options, for anti-seepage and anti-cracking cement mix for building walls garden

**Brand:** uptthow
**Price:** € 57.32
**Availability:** ✅ In Stock

## Summary

> 🧱 Reinforce your build, resist the cracks—build smarter, last longer!

## Quick Answers

- **What is this?** Fiberglass for Cement Mortar Concrete Reinforcement (19MM)-1lb | 6/9/19mm length options, 1/2/4 lb weight options, for anti-seepage and anti-cracking cement mix for building walls garden by uptthow
- **How much does it cost?** € 57.32 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/373253480-fiberglass-for-cement-mortar-concrete-reinforcement-19mm-1lb-6-9)

## Best For

- uptthow enthusiasts

## Why This Product

- Trusted uptthow brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Easy Integration:** Simply mix with sand and cement; stir 30-60 seconds longer for superior bonding.
- • **Crackproof Confidence:** Fiberglass fibers disperse evenly to prevent fine cracks, boosting mortar toughness.
- • **Customizable Mix Ratios:** Choose from 6, 9, or 19mm lengths and 1/2/4 lb weights to tailor reinforcement to your project.
- • **Impact & Seismic Shield:** High-strength filaments form a resilient net, improving impact resistance and durability.
- • **Water-Resistant Wall Armor:** Dense fiber network enhances cement impermeability—perfect for basements and exterior walls.

## Overview

UPTTHOW Fiberglass Reinforcement (19mm, 1lb) is a commercial-grade additive designed to enhance cement mortar by preventing cracks, improving waterproofing, and boosting impact resistance. Available in multiple fiber lengths and weights, it integrates seamlessly into concrete mixes for durable walls and garden structures, ideal for wet or high-impact environments.

## Description

UPTTHOW Fiberglass for Cement Mortar Concrete Reinforcement (19MM)-1lb | 6/9/19mm length options, 1/2/4 lb weight options, for anti-seepage and anti-cracking cement mix for building walls garden: desertcart.com: Tools & Home Improvement

## Features

- Anti-cracking: Mixing fiberglass and mortar together, the irregular distribution of fiberglass in the mortar enhances the toughness of mortar, and inhibits the formation of fine cracks
- Waterproof and Impermeable: A large number of fiber filaments increase the density of cement, which can effectively solve the problem of penetration. It is very suitable for wet place such as basements, pond, Exterior wall
- Impact Resistance: High-strength fiber filaments are attached to each other as a dense net to hold the cement tightly. It can effectively enhance the impact and seismic performance of cement
- How to Use: Evenly mix sand, cement and fiberglass together, then add an appropriate amount of water, and finally stir (the stiring time is 30-60 seconds longer than without fiberglass)
- Dosage: Use 1 lb. (1 pkg) per cubic yard (27 cubic feet) of concrete. You can add a little more in the area with strong impact or severe freeze-thaw

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B099NDS6V2 |
| Best Sellers Rank | #28,574 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #977 in Building Materials |
| Brand Name | UPTTHOW |
| Color | White |
| Customer Reviews | 4.7 4.7 out of 5 stars (382) |
| Grade Rating | Commercial |
| Item Diameter | 0.75 inches |
| Item Form | Roll |
| Item Shape | Fluffy |
| Item Thickness | 0.75 inches |
| Item Weight | 16 ounces |
| Manufacturer | UPTTHOW |
| Material | Fiberglass |
| Model Number | Fiberglass 19mm-1lb |
| Number of Items | 1 |
| Part Number | Fiberglass 19mm-1lb |
| Unit Count | 16 Ounce |

## Product Details

- **Brand:** UPTTHOW
- **Color:** White
- **Item Diameter:** 0.75 inches
- **Material:** Fiberglass
- **Shape:** Fluffy

## Images

![Fiberglass for Cement Mortar Concrete Reinforcement (19MM)-1lb | 6/9/19mm length options, 1/2/4 lb weight options, for anti-seepage and anti-cracking cement mix for building walls garden - Image 1](https://m.media-amazon.com/images/I/715nRghGIDL.jpg)

## Available Options

This product comes in different **Size, Item Package Quantity** options.

## Questions & Answers

**Q: Are the fibers AR fiberglass (alkali resistant) ?**
A: I made hypertufa pots with the fibers in the mixture since they are glass fibersI believe they are alkali resistant

**Q: Will this work with self leveling cement?**
A: First if your using self leveling cement you most likely are and should be covering it with tile or some type flooring. It should not really need the fiberglass fibers for strength since it is getting covered up. It is possible it will work but don't use a heavy amount. I would try a small test spot on a piece of plywood or somewhere. See what other answers you get back also, or ask the seller too

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.hr/products/373253480-fiberglass-for-cement-mortar-concrete-reinforcement-19mm-1lb-6-9](https://www.desertcart.hr/products/373253480-fiberglass-for-cement-mortar-concrete-reinforcement-19mm-1lb-6-9)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-08-11*