Types of Concrete Cracks
Every concrete crack has a cause. Identifying the failure mode is the first step toward the right repair — or knowing that no repair is needed. Select a crack type below for a detailed identification guide with severity ratings, repair options, and cost estimates.
Alkali-Silica Reaction (ASR) in Concrete
ASR causes progressive map cracking with white gel deposits. Learn to identify ASR, understand severity 3–5, and explore treatment and mitigation options.
Read guide →Corrosion-Induced Cracking in Concrete
Corroding rebar causes concrete to crack and spall from inside out. Identify rust staining, assess severity 3–5, and learn professional repair methods.
Read guide →Crazing in Concrete (Spider Cracks)
Spider cracks (crazing) are hairline surface cracks under 1/8 in deep in 1/2-1 1/2 in cells. Causes, why they're not structural, and 5 fixes ($0-$2,000).
Read guide →Foundation Cracks in Concrete
Vertical, horizontal, and diagonal foundation cracks mean different things. Orientation-based guide to assess severity and determine the right repair.
Read guide →Freeze-Thaw Spalling in Concrete
Freeze-thaw cycles cause concrete to flake, pit, and spall. Learn why it happens, how to assess severity 2–4, and when to repair vs. replace.
Read guide →Garage Floor Cracks
Why garage floors crack, how to identify shrinkage vs. settlement vs. heave, DIY repair steps, epoxy coating options, and when to call a professional.
Read guide →Plastic Shrinkage Cracking in Concrete
Plastic shrinkage cracks form within hours when evaporation exceeds bleeding. Learn the ACI 305R threshold, prevention strategies, and repair options.
Read guide →Settlement Cracking in Concrete
Settlement cracks form when soil shifts beneath a concrete slab. Identify sunken sections, assess severity 2–4, and explore mudjacking vs. foam lifting options.
Read guide →Shrinkage Cracking in Concrete
Shrinkage cracks in concrete are normal: hairline to 1/8 in wide, no offset, formed in the first 28 days. How to tell them from settlement cracks + $15-$60 fixes.
Read guide →Structural Cracking in Concrete
Structural cracks indicate overload or foundation failure. Identify warning signs, assess severity 3–5, and learn when to call a structural engineer.
Read guide →Related Resources
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