---
product_id: 374744050
title: "Fiberglass for Cement Mortar Concrete Reinforcement Anti-seepage and Anti-ing Cement Mix for Building Walls Garden Floor 3/4\"(19MM)-1lb"
brand: "uptthow"
price: "€ 47.85"
currency: EUR
in_stock: true
reviews_count: 5
category: "Uptthow"
url: https://www.desertcart.ie/products/374744050-fiberglass-for-cement-mortar-concrete-reinforcement-anti-seepage-and-anti
store_origin: IE
region: Ireland
---

# Waterproof & impermeable fiber network 19mm fiber length for optimal reinforcement 1 lb per cubic yard dosage for precision mix Fiberglass for Cement Mortar Concrete Reinforcement Anti-seepage and Anti-ing Cement Mix for Building Walls Garden Floor 3/4"(19MM)-1lb

**Brand:** uptthow
**Price:** € 47.85
**Availability:** ✅ In Stock

## Summary

> 🧱 Reinforce your build with the fiber power pros trust!

## Quick Answers

- **What is this?** Fiberglass for Cement Mortar Concrete Reinforcement Anti-seepage and Anti-ing Cement Mix for Building Walls Garden Floor 3/4"(19MM)-1lb by uptthow
- **How much does it cost?** € 47.85 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/374744050-fiberglass-for-cement-mortar-concrete-reinforcement-anti-seepage-and-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

- • **Versatile Application:** Ideal for garden floors, building walls, and wet environments—engineered for professional-grade durability.
- • **Superior Waterproofing:** Fiber filaments increase cement density, sealing out moisture—perfect for basements and exterior walls.
- • **Impact & Seismic Shield:** High-strength fibers absorb shocks and vibrations, reinforcing your build against impact and seismic stress.
- • **Precision Mixing Formula:** Use 1 lb per cubic yard with extended stirring for a flawless, uniform blend every time.
- • **Unmatched Toughness Boost:** Fiberglass fibers weave a dense net, dramatically enhancing mortar toughness and crack resistance.

## Overview

This 19mm fiberglass additive (1 lb per pack) integrates seamlessly into cement mortar to enhance toughness, waterproofing, and impact resistance. Designed for professional-grade construction, it prevents cracking and seepage, making it ideal for wet areas like basements and exterior walls. Simply mix with sand and cement, stir longer, and enjoy a stronger, more durable finish.

## Description

Please note that 2lb are packed in one bag

Review: 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: Strands too long, does not mix well with cement

## Features

- 【Anti-ing】- Mixing fiberglass and mortar together, the irregular distribution of fiberglass in the mortar enhances the toughness of mortar, and inhibits the formation of fine s.
- 【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 |
| ASIN  | B099PBY82Y |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #63,902 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #56 in Contact Cements |
| Color | White |
| Customer Reviews | 4.6 4.6 out of 5 stars (344) |
| Customer reviews | 4.6 4.6 out of 5 stars (344) |
| Cutting Diameter | 19 Millimeters |
| Date First Available | 20 October 2021 |
| Date First Available  | 20 October 2021 |
| Item Package Quantity | 2 |
| Item Weight | 454 g |
| Item form | Bag |
| Item model number | Fiberglass 19mm-2lb |
| Item model number  | Fiberglass 19mm-2lb |
| Item thickness | 0.75 Inches |
| Item weight | 454 g |
| Manufacturer | UPTTHOW |
| Manufacturer  | UPTTHOW |
| Number of Items | 2 |
| Package Dimensions | 29.9 x 16.8 x 7.5 cm; 453.59 g |
| Package Dimensions  | 29.9 x 16.8 x 7.5 cm; 453.59 g |
| Part number | Fiberglass 19mm-2lb |
| Size | 19mm |

## Product Details

- **Brand:** UPTTHOW
- **Colour:** White
- **Item diameter:** 19 Millimeters
- **Material:** Fiberglass
- **Shape:** Irregular Shape

## Images

![Fiberglass for Cement Mortar Concrete Reinforcement Anti-seepage and Anti-ing Cement Mix for Building Walls Garden Floor 3/4"(19MM)-1lb - Image 1](https://m.media-amazon.com/images/I/715nRghGIDL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by S***V on 18 October 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.

### ⭐⭐ Review
*by B***S on 14 June 2023*

Strands too long, does not mix well with cement

### ⭐⭐⭐⭐⭐ Review
*by M***G on 9 February 2024*

Absolutely what it says. I ordered what I got. I made a mistake thinking it was 5lb but it was actually 4lb. I am so sorry. The cut is good and the weight is correct. I will be ordering more in the future.

## Frequently Bought Together

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-19*