---
product_id: 47308618
title: "Bluestar FLEXIBLE Hairline Crack Filler, Gray, 16 fl. oz. – DIY Concrete Repair for Driveways and Patios"
brand: "blue star"
price: "$38.90"
currency: USD
in_stock: true
category: "Blue Star"
url: https://www.desertcart.us/products/47308618-bluestar-flexible-hairline-crack-filler-gray-16-fl-oz-diy
store_origin: US
region: United States of America
---

# Fast & easy DIY application Micron-sized precision filler Flexible in extreme temps Bluestar FLEXIBLE Hairline Crack Filler, Gray, 16 fl. oz. – DIY Concrete Repair for Driveways and Patios

**Brand:** blue star
**Price:** $38.90
**Availability:** ✅ In Stock

## Summary

> 🛠️ Fix cracks like a pro—because your concrete deserves the best!

## Quick Answers

- **What is this?** Bluestar FLEXIBLE Hairline Crack Filler, Gray, 16 fl. oz. – DIY Concrete Repair for Driveways and Patios by blue star
- **How much does it cost?** $38.90 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/47308618-bluestar-flexible-hairline-crack-filler-gray-16-fl-oz-diy)

## 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

- • **Waterproof Sealant:** Protect your driveway and patio from water damage and further deterioration.
- • **All-Weather Flexibility:** Stays flexible through scorching summers and freezing winters—no more crack expansion.
- • **Proudly Made in the USA:** Quality you can trust, supporting local manufacturing.
- • **DIY-Friendly Application:** No special tools needed—get professional-grade results with minimal effort.
- • **Precision Micron-Sized Formula:** Seamlessly fills even the tiniest hairline cracks for flawless concrete surfaces.

## Overview

Bluestar FLEXIBLE Hairline Crack Filler is a 16 fl. oz. gray liquid sealant designed for DIY concrete repair. Its micron-sized formula fills hairline cracks with precision and remains flexible in both hot and cold weather, preventing further damage. Waterproof and easy to apply without special tools, it’s ideal for driveways, patios, and other concrete surfaces. Made in the USA with durable acrylic and polyurethane materials.

## Description

Bluestar FLEXIBLE Concrete Hairline Crack Filler (Gray), DIY- No Special Tools Needed. Fill Small Cracks in Concrete Driveways, Patios and other Concrete Surfaces. 16 fl. oz. Bottle.

## Features

- MICRON SIZED TO FILL HAIRLINE CRACKS
- FORMULATED TO REMAIN FLEXIBLE IN HOT & COLD WEATHER
- DIY - Fast & Easy to Apply Seals Cracks to Prevent Further Damage
- 8 Fl. Oz. MADE IN THE U.S.A.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B073ZM4TWT |
| Best Sellers Rank | #114,490 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #356 in Wall Surface Repair Products |
| Brand Name | Blue Star |
| Color | Gray |
| Compatible Material | Concrete |
| Customer Reviews | 4.2 4.2 out of 5 stars (332) |
| Included Components | Sealant |
| Item Dimensions | 3 x 3 x 8 inches |
| Item Form | Liquid |
| Item Weight | 8 Ounces |
| Manufacturer | Bluestar |
| Material Type | Acrylic, Polyurethane |
| Model | HL90GR-1 |
| Number of Items | 1 |
| Part Number | MM-92-1 |
| Style Name | Compact |
| Surface Recommendation | Floor |
| UPC | 866019000147 |
| Unit Count | 16.0 Fluid Ounces |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Blue Star
- **Item Weight:** 8 Ounces
- **Item dimensions L x W x H:** 3 x 3 x 8 inches
- **Material:** Acrylic, Polyurethane
- **Style:** Compact

## Images

![Bluestar FLEXIBLE Hairline Crack Filler, Gray, 16 fl. oz. – DIY Concrete Repair for Driveways and Patios - Image 1](https://m.media-amazon.com/images/I/71lflyCRx2L.jpg)

## Questions & Answers

**Q: Will it work on small cracks on concrete garden statues?**
A: Not sure about statues. Tried it on concrete floor and it is a darker color and sets like a rubbery texture. Not impressed.

**Q: Would this work to repair a crack in an ‘egg’ bbq?**
A: I don't understand the question.  As far as I know, it designed to be used on horizontal cracks in cement and blacktop areas.  I used it on a cement slab in a condo before I installed carpet.  It worked great.

**Q: Can it be stained and sealed with the rest of concrete?**
A: Our crack filler products will not accept stain.  It will accept paint.  We recommend a latex based paint.

**Q: How to do you clean excess rubber on pavement?**
A: The easiest way to remove excess is to score a line between the good and the excess and use a wire brush to remove the filler outside of the crack.

## Frequently Bought Together

- Bluestar Flexible Concrete Hairline Crack Filler (Gray), DIY - No Special Tools Needed. Fill Cracks in Driveways - Patios - Sidewalks. 8 fl. oz. Bottle.
- Bluestar Flexible Concrete Hairline Crack Filler (Light Gray), DIY - No Special Tools Needed. Fill Small Cracks in Concrete Driveways, Sidewalks and Patios.
- Bluestar Flexible Concrete Crack Filler (Gray), DIY - No Special Tools Needed, Fill Cracks in Concrete Driveways, Sidewalks, Patios, Garage and Basement Floors. 16 fl. oz. Bottle.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-08*