---
product_id: 375426866
title: "UPTTHOW Fiberglass for Cement Mortar Concrete Reinforcement Anti-Seepage and Anti-Cracking Cement Mix for Building Walls Garden Floor 3/4\"(19MM)-1lb"
brand: "uptthow"
price: "326 kr"
currency: DKK
in_stock: true
reviews_count: 13
category: "Uptthow"
url: https://www.desertcart.dk/products/375426866-uptthow-fiberglass-for-cement-mortar-concrete-reinforcement-anti-seepage-anti
store_origin: DK
region: Denmark
---

# Waterproof fiber network blocks seepage Boosts mortar toughness & impact resistance 19mm fiberglass strands for max reinforcement UPTTHOW Fiberglass for Cement Mortar Concrete Reinforcement Anti-Seepage and Anti-Cracking Cement Mix for Building Walls Garden Floor 3/4"(19MM)-1lb

**Brand:** uptthow
**Price:** 326 kr
**Availability:** ✅ In Stock

## Summary

> 🧱 Reinforce your build, resist the cracks, and waterproof like a pro!

## Quick Answers

- **What is this?** UPTTHOW Fiberglass for Cement Mortar Concrete Reinforcement Anti-Seepage and Anti-Cracking Cement Mix for Building Walls Garden Floor 3/4"(19MM)-1lb by uptthow
- **How much does it cost?** 326 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/375426866-uptthow-fiberglass-for-cement-mortar-concrete-reinforcement-anti-seepage-anti)

## 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 Pro Mix:** Simply blend with sand and cement; just add 30-60 seconds extra stirring for flawless integration.
- • **Crackproof Confidence:** Fiberglass fibers weave a resilient mesh that stops fine cracks before they start.
- • **Impact & Seismic Shield:** High-strength fibers form a tight net, enhancing shock absorption and durability under stress.
- • **Water-Resistant Wall Armor:** Densifies cement to create an impermeable barrier—perfect for basements and exterior walls.
- • **Precision Dosage for Peak Performance:** Use 1 lb per cubic yard, with extra for high-impact or freeze-thaw zones—engineered for exacting standards.

## Overview

UPTTHOW Fiberglass 19mm strands integrate seamlessly into cement mortar to enhance toughness, prevent cracking, and create a waterproof barrier. Ideal for building walls, garden floors, and wet environments, this 1 lb pack delivers professional-grade reinforcement that boosts impact resistance and durability, ensuring long-lasting, resilient concrete structures.

## Description

UPTTHOW Fiberglass for Cement Mortar Concrete Reinforcement Anti-Seepage and Anti-Cracking Cement Mix for Building Walls Garden Floor 3/4"(19MM)-1lb: desertcart.com: Tools & Home Improvement

Review: Perfect addition to Bondo or fiberglass resin. - Perfect for adding to Bondo for extra strength. As a taxidermist, I add it to Bondo to make thinner ears in the animals that I taxidermy. It does a great job.
Review: worked well - worked well; not to fluffy, be sure to add a little at a time, or it clumps up will buy again if required

## 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 | B099PBY82Y |
| Best Sellers Rank | #69,086 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #16 in Concrete |
| Date First Available | July 16, 2021 |
| Item Form | Fiber |
| Item Weight | 1 pounds |
| Item model number | Fiberglass 19mm-2lb |
| Manufacturer | UPTTHOW |
| Number of Items | 1 |
| Package Dimensions | 11.77 x 6.61 x 2.95 inches |

## Product Details

- **Brand:** UPTTHOW
- **Color:** White
- **Item Thickness:** 0.39 Inches
- **Material:** Fiberglass
- **Shape:** Irregular Shape

## Images

![UPTTHOW Fiberglass for Cement Mortar Concrete Reinforcement Anti-Seepage and Anti-Cracking Cement Mix for Building Walls Garden Floor 3/4"(19MM)-1lb - Image 1](https://m.media-amazon.com/images/I/41UqDnxNXWL.jpg)
![UPTTHOW Fiberglass for Cement Mortar Concrete Reinforcement Anti-Seepage and Anti-Cracking Cement Mix for Building Walls Garden Floor 3/4"(19MM)-1lb - Image 2](https://m.media-amazon.com/images/I/51Lmd1L27wL.jpg)
![UPTTHOW Fiberglass for Cement Mortar Concrete Reinforcement Anti-Seepage and Anti-Cracking Cement Mix for Building Walls Garden Floor 3/4"(19MM)-1lb - Image 3](https://m.media-amazon.com/images/I/51UM3XhncDL.jpg)
![UPTTHOW Fiberglass for Cement Mortar Concrete Reinforcement Anti-Seepage and Anti-Cracking Cement Mix for Building Walls Garden Floor 3/4"(19MM)-1lb - Image 4](https://m.media-amazon.com/images/I/51eHa5fh8ZL.jpg)
![UPTTHOW Fiberglass for Cement Mortar Concrete Reinforcement Anti-Seepage and Anti-Cracking Cement Mix for Building Walls Garden Floor 3/4"(19MM)-1lb - Image 5](https://m.media-amazon.com/images/I/51fwcMz3QZL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect addition to Bondo or fiberglass resin.
*by S***V on October 18, 2025*

Perfect for adding to Bondo for extra strength. As a taxidermist, I add it to Bondo to make thinner ears in the animals that I taxidermy. It does a great job.

### ⭐⭐⭐⭐⭐ worked well
*by J***Y on December 20, 2025*

worked well; not to fluffy, be sure to add a little at a time, or it clumps up will buy again if required

### ⭐⭐⭐⭐⭐ It works!
*by T***M on October 17, 2025*

If you want an easy way to make concrete stronger this is what you need!

## Frequently Bought Together

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-29*