Bluestar Flexible Concrete Hairline Crack Filler (Light Gray), DIY - No Special Tools Needed. Fill Small Cracks in Concrete Driveways, Sidewalks and Patios.
Details
- MaterialSynthetic
- BrandBlue Star
- StyleCompact
- Item Weight8 Ounces
- Item dimensions L x W x H3 x 3 x 8
Description
🧱 Seal the cracks, not your style—stay flawless, stay flexible!
- DUAL GRAY SHADES - Choose the perfect light or standard gray to blend invisibly with your concrete surfaces.
- COMPACT PORTABLE - 8 oz. lightweight design fits easily in your toolkit for quick touch-ups anytime.
- ALL WEATHER FLEXIBILITY - Remains durable and flexible in both scorching heat and freezing cold—no cracking, no peeling.
- EFFORTLESS DIY APPLICATION - No special tools or expertise needed—get professional results in minutes.
- PRECISION MICRON SIZED FORMULA - Seamlessly fills even the tiniest hairline cracks for a flawless finish.
Bluestar Flexible Concrete Hairline Crack Filler is a 7-8 oz. synthetic rubber sealant designed for precise, micron-sized filling of small cracks in concrete driveways, sidewalks, and patios. It offers water resistance and remains flexible across temperature extremes, making it ideal for DIY users seeking a fast, tool-free solution in light or standard gray shades.
Specifications
| Material | Synthetic Rubber |
| Brand | Blue Star |
| Style | Compact |
| Item Weight | 8 Ounces |
| Item dimensions L x W x H | 3 x 3 x 8 inches |
| Compatible Material | Concrete |
| Water Resistance Level | Water Resistant |
| Item Form | Liquid |
| UPC | 866019000154 |
| Unit Count | 16.0 Ounce |
| Number of Items | 1 |
| Color | Light Gray |
| Surface Recommendation | Floor |
| Manufacturer | Bluestar |
| Part Number | MM-92-1 |
| Item Weight | 8 ounces |
| Product Dimensions | 3 x 3 x 8 inches |
| Item model number | HL90LG-1 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Capacity Description | 8 |
| Usage | Concrete/Masonry |
| Included Components | Sealant |
| Batteries Included? | No |
| Batteries Required? | No |
Have a Question? See What Others Asked
Reviews
L**T
Good for cracks and even pitted areas
Great product no mixing required! Just squeeze into the crack and level with putty knife as needed. Dries pretty quick so you can paint over the crack as I did. I wanted to paint my cement porch which is rather large black and it was perfect for this project.
A**R
Easy to use, and works great!
I used this to close up some openings on my screened porch, to keep insects out. It is very easy to use, and very effective. Once applied, it retains some flexibility, so no cracking when the temperature changes. Highly recommend.
D**A
Good to fill narrow concrete cracks
A good product, I needed to fill ~1/16 inch crack in New concrete floor. Performed as advertized but required 2 applications to fill crack.
A**R
Not quickcrete
This is not quickcrete, so you should not expect it to act like it.Overall, this is a very good product for what it says it was designed for. NO PRODUCT is going to do a great job across the board for patching concrete cracks, and while it has its pros and cons, I place it above other products I have tried. This pours very well and is easy to use. I wish it was not quite as thick, it beads a little more than I want. As a tip, when you cut the nozzle I would start very small, so you can keep the size of the nozzle hole really small.
P**N
Pay attention to the size.Only 8 ounces.
You can buy a quart of a different product for about a dollar more.This is only 8 ounces.The product is great.
B**B
Best product
Their are occasions where you encounter a product where you feel compelled to provide a product review, good or bad. This is one of those products. This product is perfect as described. Those that have provided negative comments either do not understand the product or have an application not suited for this product.It is easy to apply, does just as the description says and is very easy to use. The description says for small cracks. Understand that —small cracks.I highly recommend this product if your need fits the provided description.
K**.
Works very good for me
Does a very good job on the cracks on the sidewalk and driveway I used the product on
S**Y
Really works
I used this to fill hairline cracks on my front and back porches. I applied this in the summer of 2024 and it's still holding up. It's not the same color as the rest of the porch, but the crack is filled.
Common Questions
Trustpilot
2 months ago
5 days ago
