9 Best Epoxy For Concrete Repair | Skip the Patch, Pick the Epoxy

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Same trusted paste, four times the quantity for bigger jobs.

If you need to fix multiple broken spots at once — like concrete planter corners, fieldstone pavers, or a brick staircase — this big-batch version gives you 32 ounces in two jars (four times the 8-ounce size of the standard PC-Masonry paste). It uses the same non-sag paste formula that sticks to wet surfaces and works in temperatures from 35°F to 115°F, so you can repair outdoors in cool or hot weather without the epoxy sliding off.

The working time is roughly 15 minutes, and users report it hardens into a “rock-like monolith” that does not crack or flake. The thing owners praise most is the adhesion — 43 buyers single it out — and the durability follows close behind at 30 mentions. The paste has a rough gritty texture, so a smooth finish requires extra effort. At about 16 ounces of actual material weight per kit (the jars hold 32 oz of epoxy), it gives you room to tackle a weekend’s worth of repairs.

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A low-odor, self-leveling compound that heals floors without the fumes.

If you are patching a concrete floor that needs to be smooth and level — not just filled — this kit is built for it. The Abocrete compound is a self-leveling liquid that you pour and trowel, and it finds its own flat surface. It is Greenguard certified, meaning it contains virtually no VOCs (volatile organic compounds — the harsh fumes you smell from standard epoxy), so you can use it indoors without gassing out the house. It also resists salt water, oil, and chemicals that would eat regular concrete.

This is a premium product at a premium price. The kit includes the epoxy and sand to mix yourself. One important note: the listed volume is mostly sand, with about 40 ounces of actual epoxy resin. If you use all the sand, the mix becomes thick and non-pourable — so reserve some sand if you want a thin, self-leveling layer. Buyers driving forklifts over the repaired area report it “still is holding strong” after continuous heavy traffic.

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The cartridge system that sets fast and holds a 9,000-pound lift.

This is a dual-cartridge system made for anchoring threaded rods, rebar, and heavy bolts into concrete. It is not a crack-filler in the paste sense — it is a fast-setting liquid epoxy that you inject into a drilled hole, then insert your anchor. The working time ranges from 3 to 20 minutes depending on temperature, giving you flexibility, and full cure takes between 3 and 24 hours. The bond is so strong that one owner anchored a 9,000-pound two-post car lift with 3/4-inch threaded rods and said “no way these are coming out.”

At 20.2 fluid ounces in a dual cartridge, it fits a standard caulking gun. It can also repair large cracks — one buyer sealed a big crack and reported the epoxy “worked great.” The trade-off is that the included caulking gun is poor quality, so plan on using your own. And because it sets fast in the mixing tube, you must use all the epoxy once you start dispensing.

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A professional-grade injection kit that permanently stops foundation leaks.

This is the full system for repairing structural cracks in foundations, basement walls, and slabs where water leaks through. It includes a two-part epoxy paste for adhering injection ports and covering the crack surface, plus two 10-ounce cartridges of liquid epoxy resin that you inject under pressure to fill the void from the inside. The kit is designed to repair an 8-foot crack between 1/16 and 1/8 inch wide, and it bonds to concrete, wood, fiberglass, and metal — so it works on more than just masonry.

The real strength here is stopping leaks permanently. The liquid epoxy flows deep into the crack and cures to a rock-hard seal that prevents further water penetration. Owners note it sealed a wall “great” and successfully slowed a basement leak. However, this is not a simple squeeze-and-go product — the process of seating and sealing injection ports, then applying the liquid at the right pressure, requires patience and careful prep.

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A self-mixing liquid that penetrates deep and bonds broken pieces with incredible strength.

This is a high-strength liquid epoxy from DRICORE that uses a self-mixing cartridge — you just attach the nozzle and squeeze. It is designed to work with carbon fiber reinforcement for structural repair, but it also performs as a standalone adhesive for bonding broken concrete, attaching threaded rods, or filling cracks. The 16-ounce cartridge (8.5 fluid ounces of actual epoxy) is enough for several medium repairs.

What stands out is the penetration. The liquid formula is thin enough to seep into deep, narrow cracks — one owner reported it “penetrated deep enough to hold it nicely” when used on a cement crack. It also bonded a concrete statue head back onto the body “like magic.” At 4.2 stars across 47 ratings, the crowd finds it effective, but the smaller review pool means a few bad experiences carry more weight. It is water-resistant after curing, so it handles outdoor use well.

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The thinnest epoxy here, designed to flow into hairline cracks and set clear.

When you have a hairline crack in stamped concrete, a foundation wall, or a brick joint, you need an epoxy thin enough to flow into that gap — not a paste that sits on the surface. This Akona repair is a low-viscosity liquid that comes in a tube with a fluid mixing nozzle, designed for cracks up to a 1/4-inch wide and 6 inches deep. It cures clear, so it blends into the surface visually.

You get a fast cure time of 3.5 hours, which is shorter than most epoxies in this guide. Buyers who used it on garage floor cracks report the seal held up “through winter summer and spring.” The trade-off is that this epoxy is very runny. On vertical cracks, it can drip out before it sets, and some owners say puddles on the ground took “weeks to harden.” So this epoxy works best on horizontal or near-horizontal cracks where gravity helps the flow, not fights it. it’s not for you if you need to repair a vertical wall or overhead surface.

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The big-bucket paste for anchoring and crack repair with a forgiving work window.

If you need to anchor threaded rods or bolts into concrete, grout-filled block, or masonry, this is the larger cousin of the PC Masonry paste — 102 ounces in a pail. It meets ASTM C881-99 (a standard for epoxy repair materials), so it is designed for structural bonding. You get a 20-minute working time and a 4-hour cure at 75°F, which gives you much more time to position bolts than the 5-minute window of the smaller PC-Masonry paste.

The high-tack formula resists moisture, so it works in damp environments. Owners have used it to stop active water seepage in foundation cracks — after widening the crack with a diamond grinder and applying this paste, two rain events later there were no leaks. Another buyer repaired concrete pool settling cracks and the pool held water all summer. The downside is the paste can sink and leave low spots in repairs, so you may need a second pass.

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A zero-VOC epoxy mortar that patches warehouse floors and outdoor walkways with 6700 psi of tensile strength.

This is a 100% solids epoxy mortar — meaning it contains no VOCs, no solvents, and no water, which makes it safe for indoor use without strong fumes. It is designed specifically for floors that need patching or resurfacing but do not require extreme chemical resistance. The mortar consistency goes on like playdough and dries brick-hard in about an hour. Full cure for heavy traffic takes 2 to 7 days depending on temperature and thickness.

You get a smooth working time of 20-30 minutes at 70°F, and you can recoat it in 6-7 hours for thicker builds. One buyer used it to patch a warehouse floor and said it “holds up well with heavy use.” The biggest issue reported is inconsistent epoxy-to-hardener ratios between units — one out of four kits had 50% less epoxy, and the manufacturer was unreachable for support. That is a real risk for a product at this price, so check the contents before you start.