Introduction

Ever seen hairline cracks in your own driveway, which seem to multiply like spider webs the week after a rainy spell? Cracks in concrete are not just unsightly; they can lead to other problems if not remedied. But what if you could solve them yourself in a matter of minutes, without calling a contractor?

That’s just what the Concrete Crack Filler by Dongxw (2-pack, rapid drying sealant) promises. This product is increasingly being noticed by homeowners as it boasts speedy curing, waterproofing once cured, and self-leveling functionality.

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But does it really work? Let’s take a closer look.

Product Overview

Featuring in repairing cracks on any surface, The Concrete Crack Filler (2Pcs, Gray, Dongxw) – it is a gray solid that blends with all surfaces. It comes in a ready-to-use caulking tube and is intended to provide homeowners with an affordable, weather-tight repair for cracked surfaces requiring no consultation from a professional.

It’s made for anyone who:

• Wants to “keep the water damage from getting into the cracks.”
  
• Prefers a quick-drying, DIY solution.
  
• Requires a multipurpose sealant that can be used over surfaces other than concrete.
  

Features & Details

Here’s what I like about this product:

Rapid Cure & Waterproof

• The filler can be opened to traffic in as little as 2 hours!
  
• As it dries, it creates a barrier that helps stop leaks and fills hairline cracks in the roof’s surface so rain and snow can’t get in.
  

High Elasticity

• Unlike hard fillers that crack from pressure, this one bends through ground movements, thermal changes, and expansion or contraction.
  
• This translates to less secondary cracking down the line.
  

Weather Resistance

• Sealant compound is constructed with high performance UV-resistant polymer resin.
  
• Resists aging, sunshine, chemical corrosion, and cold-hot alternate snowflake defrost weather.
  

Self-Leveling Formula

• No extra buffing devices required.
  
• Just brush it on, and it flattens out perfectly for a neat, professional finish.
  

Works on Multiple Surfaces

• Not just on concrete, but also on brick, tile, wood and metal.
  

Specifications:

• Brand: Dongxw
  
• Material: Silicone-based polymer resin
  
• Style: 2 pieces, 2.21 lb total
  
• Form: Gel, applied with a nozzle
  
• Colour: Grey (works for most driveways)
  

Pros & Cons

✅ Pros

• Quick-drying formula saves time.
  
• Self-leveling for a neat finish.
  
• Strong waterproofing prevents long-term damage.
  
• Applicable to several surfaces, not only concrete.
  
• UV and weather resistant for all-season use.
  
• Flexible—reduces the risk of new cracks.
  
• Cheaper than getting it fixed professionally.
  

❌ Cons

• For single knots in horizontal cracks (not for use on vertical).
  
• Gray shade won’t go with all concrete colors.
  
• Prep cracks appropriately prior to use.
  
• Tubes may not be enough for big repairs (works best on small-mid size cracks).
  

User Testimonials

According to Amazon customers:

• The majority of reviewers (almost 80%) say that it holds water so well, sealing all cracks against rain.
  
• Homeowners appreciated that it was easy to use, particularly the function that self-levels automatically.
  
• Pros receiving a round of applause for its waterproof strength and perfect results.
  
• A handful of reviewers noted that the gray color contrast may be a little jarring against light concrete.
  
• Others mentioned they needed more than one tube for large driveways.
  

The overall sentiment is positive as far as customers are concerned—particularly for DIY-fixers that need a cost-effective solution.

Personal Experience

I haven’t tried this product myself, but from what I’ve read and heard from experts, crack fillers made of polymers like this one are often recommended by contractors for small to medium horizontal cracks.

Why? Because they:

• Keep water from infiltrating (by far the most common reason cracks spread).
  
• Stay flexible with temperature changes.
  
• Provide a more permanent alternative to the typical short-lived & ineffective means of removing rust.
  

It’s more flexible and offers better resistance to weather compared to traditional patching compounds, which makes this filler an ideal option for most homeowners.

Comparison Section

How does the Dongxw concrete crack filler stack up against some other products?

• Versus Latex-ite Crack Filler: Dongxw dries quickly and is more pliant, while the latter comes in a larger volume per container.
  
• Versus Red Devil Masonry Repair: Dongxw is self-leveling (easier for novices) while Red Devil requires manual smoothing.
  
• Versus Sikaflex Concrete Sealant: Both are weather-resistant, but Sikaflex is usually more expensive and designed for larger structural cracks.
  

👉 The bottom line: If you’re in search of fast, DIY-friendly crack repair with flexibility, the Dongxw filler is worth considering. For big jobs, you might be looking for a professional-grade pick.

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Conclusion & Recommendation

A great option for homeowners in search of a quick, weatherproof, and simple-to-apply solution to driveway and patio cracks is Dongxw Concrete Crack Filler.

Best for: DIYers and homeowners with small-to-medium cracks who prefer a wallet-friendly repair.

Not for: Very large structural cracks or vertical repairs.

If you need a quick, budget-friendly fix that won’t break down on the side of the road, this product is worth checking out.

Call to Action

👉 Ready to fix your driveway today?
Check today’s price on Amazon here.

Disclosure: This article contains affiliate links. As an Amazon Associate, I earn from qualifying purchases. This is how I can continue producing research and good reviews for you!

FAQs Section

Q1. What is the drying time for the filler?
It cures fast, with dry strength kicking in 2–3 hours and is fully set up in 24. The lowest recommended temperature for applying Quick Setting Cement is 50°F.

Q2. Can it be applied to vertical cracks?
No, it is for horizontal cracks only.

Q3. Does it mix well with concrete?
It is available in gray, which will complement most driveways but may contrast a bit with very pale or dark concrete.

Q4. How many tubes for driveway?
That depends on how big the cracks are. A single tube may be all you need for tiny hairline cracks. Opt for several packs for bigger jobs.

Q5. Is it safe for pool decks?
Yes, it is waterproof and chlorine-resistant, making it great for poolside fixes.