Foundation Concrete Crack Repair Guide and DIY Solutions

foundation crack repair

Leaking cracks in poured or block foundation walls? Cracks in a concrete slab, basement floor, driveway, garage, patio, or sidwalk? Leaky floor-to-wall or control joints? Spalling, pitting, or flaking outdoor concrete? For over a decade, we have been offering professionals and homeowners the widest selection of the most advanced concrete crack repair products for permanent repairs of cracks, joints, and spalls in indoor or outdoor concrete.

Save Serious Money – Hiring a contractor to repair a foundation crack can be expensive (average $500) but surprisingly anyone can repair simple concrete foundation cracks. Whether repairing cracks that leak or merely for appearance, our comprehensive line of crack repair kits are designed for permanent concrete repairs! Professional-quality repairs for contractors but easy enough to use by homeowners!

The Wrong Way To Repair Concrete Cracksconcrete floor crack

Caulk Failure – The typical homeowner will attempt to fix concrete cracks with silicone caulk but this is only a superficial repair. Water will fill the inside of the crack and cause efflorescence, which will eventually loosen the caulk. In couple years, the caulk will lose its bond and start peeling.

Do Not Use Hydraulic Cement! – Disappointed, the homeowner will remove the caulk, chisel out the crack, and fill it with hydraulic cement. But hydraulic cement does not bond well to concrete – that's why it needs an inverted V-groove to hold it in. Additionally, hydraulic cement is very rigid. As concrete continuously moves, shrinks and expands, the rigid "rod" will loosen. Efflorescence ("white powder") will start purging around it, soon followed by drops of water. After a couple of years, water will start seeping in.

An alternative foundation repair method is to excavate and patch the crack on the exterior. This may not be permanent because all surface repairs will eventually get loose or crack.

How To Choose the Appropriate Concrete Crack Repair Kit

The chart and product information below will help you better understand how to select the proper concrete crack repair kit for your problematic crack.

Sealing Cracks is not always Cut-and-Dry – We offer a comprehensive line of concrete repair kits for waterproofing professionals and homeowners alike with no-fuss ease of use. Our expertise as application consultants, we will help you make the right product selections to meet your specific requirements. If you wish to discuss application or have any questions regarding your particular project feel free to contact us to speak with a service technician (call today, 1-800-472-0603 or email us your questions).

Our line of crack repair kits are not sold in stores but shipped factory-direct via UPS. Orders usually ship same day and delivery takes anywhere from 2-5 days.

Surface Area Type of Crack, Leak Your DIY Concrete Crack Repair Solution
POURED CONCRETE WALLS Cracks (<1/2"), Hairline Cracks Fill with DIY Crack Injection Kit or PRO Injection Toolkit
  Wide Cracks (>1/2") Fill with ElastiPoxy Joint & Crack Filler
  Gaps around pipes, Wire Ties
Waterproof using PipeTite Gap Filler Kit
  Voids, Holes, Honecombs Waterproof voids using ElastiPoxy Joint & Crack Filler
CONCRETE BLOCK WALLS Cracks, Holes, missing Mortar Fill crack with ElastiPoxy Joint & Crack Filler
  Deteriorated Concrete Blocks
Trowel on ElastiPoxy Joint & Crack Filler
  leaky Pipe Penetrations Fill void with ElastiPoxy Joint & Crack Filler
CONCRETE FLOOR, SLAB leaking Floor-To-Wall Joint Repair using ElastiPoxy Joint & Crack Filler
  Hairline Cracks Fill with CrackWeld Floor Repair Kit
  Cracks (<1/2") Fill with CrackWeld Floor Repair Kit
  leaks around Pipes Penetrations Waterproof using PipeTite Gap Filler Kit
  Expansion Control Joints Fill with ElastiPoxy Joint & Crack Filler
  Wide Gaps (>1/2") Fill with ElastiPoxy Joint & Crack Filler
DRIVEWAY, SIDEWALK, INDUSTRIAL Cracks (<1/2") Fill with CrackWeld Concrete Floor Repair Kit
  Wide Cracks (>1/2") Fill with ElastiPoxy Joint & Crack Filler
  Control Joints, Saw Cuts Fill expansion joint with ElastiPoxy Joint & Crack Filler
  Spalls, Pit Marks, Holes Repair concrete with ElastiPoxy Joint & Crack Filler

DIY Concrete Crack Repair Kits – (8-10 ft.)

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Common Use: hairline cracks, poured concrete walls, leaking foundation cracks, mortar cracks in stone foundations, radon preventionRadonSeal Concrete Crack Repair

The Ideal Repair Kit for Homeowners! Our DIY Concrete Crack Injection Kits are designed for use for cracks in poured concrete walls. They are not recommended for use on concrete block walls because of their hollow cores. Repair is usually made from the inside, which avoids excavating the outside of the foundation wall. The DIY crack repair kits are suitable for hairline cracks, as well as wide cracks (up to ½”). Low pressure concrete crack injection works by filling the entire length and depth of the crack. It permanently stops water leaks. It also protects the concrete. The entire cracks is filled which prevents groundwater from getting into the concrete.

Our standard injection kits use polyurethane, which forcefully expands to fill the entire crack (20x its volume). If structural strength is definitely required, use our epoxy crack injection kits, which is more exacting – the crack must be dry inside. Epoxy does not expand and if there is a void, will run out of the back of the crack.

Material(s) Needed: Standard/Single cartridge caulking gun

Coverage: 8-10 linear foot crack

PROFESSIONAL Concrete Crack Repair Kits – (30 & 60 ft.)Proffesional Concrete Crack Repair Kit

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Common Use: basements, multiple cracks, dams, commercial buildings, industrial structures, poured concrete, foundation cracks

The Complete Kit for Waterproofing Contractors! Like the DIY Kits, our professional toolkits use expandable polyurethane foam and/or a rigid injectable epoxy. The PRO Crack Repair Kits include a dual-caulking gun making injection easier and the epoxy surface seal cures much faster in comparison to the surface seal for our DIY Kits (less waiting). The expandable urethane foams adheres tenaciously to dry and wet surfaces, it is suitable for both dry or wet cracks. Its low-viscosity (100 cps) and forceful expansion on contact with water make it suitable for both hairline or wide cracks. Replacement kits, materials, and accessories are available, as well as special surface sealers and injection polymers needed by contractors.

Material(s) Needed: None, Complete Kit

Coverage: Available in 30 ft. and 60 ft. kits

CrackWeld DIY Concrete Floor Crack Repair KitBasement Floor Crack Repair Kit

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Common Use: hairline cracks, basement floor, concrete floors, garage floor, concrete driveway, sidewalks, commercial floors

No Routing or Drilling of the Cracks is Required – Our CrackWeld Concrete Floor Repair Kit was designed for flooring contractors but can be easily used by homeowners! The only tool required is a standard caulking gun. CrackWeld is able to fill the full depth of hairline and wider cracks in indoor or outdoor concrete slabs with a rigid, fast-curing, low-viscosity resin. It cures stronger and harder than concrete itself! Ready for overlays in half-hour.

Material(s) Needed: Standard/Single cartridge caulking gun

Coverage: 2-pack/up to 50 ft. of a 1/16” crack or 25 ft. of a 1/8" crack, also available in a 4-pack

 

CrackWeld Professional Concrete Floor Crack Repair KitBasement crack repair kit

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Common Use: hairline cracks, basement floor, concrete floors, garage floor, concrete driveway, sidewalks, commercial floors

Quick Curing Repair Kits for Flooring Contractors - The CrackWeld PRO Concrete Floor Repair Kits are for contractors or homeowners with extensive slab cracks. The two-component CrackWeld compound is packaged in dual-tube cartridges. Kits include a professional dual-cartridge gun, mixing nozzles, a bag of silica sand, and other accessories.

Material(s) Needed: None, Complete Kit

Coverage: 100 ft. of a 1/16” crack or 50 ft. of a 1/8" crack

ElastiPoxy Contral Joint & Crack Filler KitLeaky Floor-To-Wall Joint Repair Kit

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Common Use: floor-to-wall joint, cracks in concrete blocks, wide cracks, expansion control joints, spalling, warehouse floors, parking garage, cold joints

Ideal For Repairing Leaking Floor-To-Wall Joints! ElastiPoxy Joint & Crack Filler Kit protects floor-to-wall joints (cold joint) and control joints against heavy traffic while it allowing for the natural movement of concrete slabs. ElastiPoxy can also be used to fill cracks in concrete slabs and cracks in concrete blocks but they have to be routed out first if they are hairline in size. ElastiPoxy can be mixed with dry sand (play/construction sand) to provide a very strong and rigid repair. Bonds tenaciously and cures stronger than concrete itself!

Material(s) Needed: Play sand, or construction sand

Coverage: See detailed product information for coverage

PipeTite Gap Filler KitLeaking Foundation Pipe Repair Kit

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Common Use: voids around pipe penetrations through foundation walls, wire ties, short foundation cracks

Similar to our DIY Concrete Crack Injection Kits, PipeTite will permanently prevent water leaks by expanding and filling voids around pipe penetrations and/or through leaking wire ties. The PipeTite Kit reacts with moisture/water and fills the entire void with an expandable, strong-bonding, high-grade, polyurethane foam.

Material(s) Needed: Standard/Single cartridge caulking gun

Coverage: 5-7 wire ties, 3-5 pipe penetrations