---
product_id: 47578533
title: "Bluestar Flexible Concrete Hairline Crack Filler (Light Gray), DIY - No Special Tools Needed. Fill Small Cracks in Concrete Driveways, Sidewalks and Patios."
brand: "blue star"
price: "94.48 DT"
currency: TND
in_stock: true
category: "Blue Star"
url: https://www.desertcart.tn/products/47578533-bluestar-flexible-concrete-hairline-crack-filler-light-gray-diy-no
store_origin: TN
region: Tunisia
---

# Micron-sized precision filler Flexible in hot & cold weather DIY, no special tools needed Bluestar Flexible Concrete Hairline Crack Filler (Light Gray), DIY - No Special Tools Needed. Fill Small Cracks in Concrete Driveways, Sidewalks and Patios.

**Brand:** blue star
**Price:** 94.48 DT
**Availability:** ✅ In Stock

## Summary

> 🧱 Seal cracks like a pro—because your concrete deserves the best!

## Quick Answers

- **What is this?** Bluestar Flexible Concrete Hairline Crack Filler (Light Gray), DIY - No Special Tools Needed. Fill Small Cracks in Concrete Driveways, Sidewalks and Patios. by blue star
- **How much does it cost?** 94.48 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/47578533-bluestar-flexible-concrete-hairline-crack-filler-light-gray-diy-no)

## Best For

- blue star enthusiasts

## Why This Product

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

## Key Features

- • **Made in the USA:** Quality you can trust, supporting local manufacturing
- • **Dual Gray Shades:** Choose the perfect light or standard gray to match your concrete
- • **Precision Micron Filler:** Seamlessly fills hairline cracks for a flawless finish
- • **Weather-Ready Flexibility:** Stays flexible through temperature swings, preventing re-cracks
- • **Effortless DIY Application:** No special tools required—get professional results at home

## Overview

Bluestar Flexible Concrete Hairline Crack Filler is a precision-engineered, synthetic rubber formula designed to fill small cracks in concrete surfaces. Available in two gray shades, it remains flexible in extreme temperatures and requires no special tools for easy DIY application. Perfect for driveways, sidewalks, and patios, this 7 fl. oz. product is water-resistant and proudly made in the USA.

## Description

Bluestar Flexible Concrete Hairline Crack Filler (Light Gray), DIY - No Special Tools Needed. Fill Small Cracks in Concrete Driveways, Sidewalks and Patios.

## Features

- MICRON SIZED TO FILL HAIRLINE CRACKS
- TWO SHADES OF GRAY TO CHOOSE FROM - GRAY & LIGHT GRAY
- FORMULATED TO REMAIN FLEXIBLE IN HOT & COLD WEATHER
- DIY - Fast & Easy to Apply
- 7 Fl. Oz. MADE IN THE U.S.A.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B073ZL6GXN |
| Best Sellers Rank | #81,196 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #279 in Wall Surface Repair Products |
| Brand Name | Blue Star |
| Color | Light Gray |
| Compatible Material | Concrete |
| Customer Reviews | 4.2 4.2 out of 5 stars (939) |
| Included Components | Sealant |
| Item Dimensions | 3 x 3 x 8 inches |
| Item Form | Liquid |
| Item Weight | 8 ounces |
| Manufacturer | Bluestar |
| Material Type | Synthetic Rubber |
| Model | HL90LG-1 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | MM-92-1 |
| Style Name | Compact |
| Surface Recommendation | Floor |
| UPC | 866019000154 |
| Unit Count | 16 Ounce |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** Blue Star
- **Item Weight:** 8 ounces
- **Item dimensions L x W x H:** 3 x 3 x 8 inches
- **Material:** Synthetic Rubber
- **Style:** Compact

## Images

![Bluestar Flexible Concrete Hairline Crack Filler (Light Gray), DIY - No Special Tools Needed. Fill Small Cracks in Concrete Driveways, Sidewalks and Patios. - Image 1](https://m.media-amazon.com/images/I/71zjbNoQ-TL.jpg)

## Questions & Answers

**Q: Approximately how many linear feet can i expect from one bottle?**
A: Sir, There is no easy way to calculate the lineal feet of crack coverage.  other than guesstimating the the volume.  It really depends on the depth and width of your crack and Length.  However,  proper preparation of the crack is essential.  I plan on sandblasting my cracks, cleaning them out by using high pressure air or water. and then filling the void with the sealant.  If you use a pressure washer you need to make sure it is allowed to dry thoroughly before putting the sealant with them.  Filling the cracks on a warm day is a must.  Timing helps. Good luck. Michael

**Q: Can this be cleaned up with water while using?  Like using a wet sponge**
A: Yes.  Water clean up can be used.

**Q: I have a 2 tiered water fountain and the second tiered has hairline crack, can this product prevent it from breaking apart?**
A: This product will seal the crack but it will not repair it.  However our Bluestar Concrete Resurfacer may repair it since it is a concrete with added polymer for strength.   Bluestar Concrete Resurfacer is sold on Amazon also.

**Q: Will this work on tile?**
A: Yes. I’ve found it works on concrete, tile, stone and even wood. Great product.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.tn/products/47578533-bluestar-flexible-concrete-hairline-crack-filler-light-gray-diy-no](https://www.desertcart.tn/products/47578533-bluestar-flexible-concrete-hairline-crack-filler-light-gray-diy-no)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-09-30*