Seal a Small Concrete Crack
Learn what the project involves, which supplies to identify before shopping, and when professional help is safer. No registration or credit card.
Safety first
Confirm the exact product, existing conditions, applicable codes and manufacturer directions before starting. If the work reveals hidden damage, stop and reassess.
Tools & materials checklist
Compare the tools and materials for this repair, then check Home Depot, Lowe’s or Amazon. Product photos will be added from approved catalog sources.
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Project-specific work plan
- Determine whether crack is active
Check the product instructions and site conditions at this stage. Stop if the installation differs from what you expected.
- Clean loose material
Check the product instructions and site conditions at this stage. Stop if the installation differs from what you expected.
- Dry per product requirements
Check the product instructions and site conditions at this stage. Stop if the installation differs from what you expected.
- Apply approved filler
Check the product instructions and site conditions at this stage. Stop if the installation differs from what you expected.
- Allow full cure
Check the product instructions and site conditions at this stage. Stop if the installation differs from what you expected.
Pro tip: save time and money
Wide or moving cracks may need assessment rather than caulk.
Compare total cost, including preparation, replacement materials, extra trips to the store and your time—not just the shelf price.
Before you call it finished
- Check that the product operates normally.
- Inspect for leaks, movement, gaps or other signs of failure relevant to this project.
- Save packaging, model details and warranty documents.
- Recheck the work after regular use.
Helpful video tutorials
Watch a relevant demonstration before starting. Check the model, safety steps and local code requirements for your project.
Video tutorials for this repair are being reviewed. No unverified video links are displayed.
MrFixItDIY — YouTube candidate; playback and content not independently reviewed.
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Everyday Home Repairs — YouTube candidate; playback and content not independently reviewed.
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Hammers Home Reno — YouTube candidate; playback and content not independently reviewed.
Watch video ↗Direct links are identified as such. Search cards are not reviewed videos. Videos are hosted by their respective creators.
DIY or hire a professional?
If the work needs permits, involves hazardous utilities, hidden damage, unsafe access or exceeds your experience, hire an appropriately qualified professional. Compare written quotes for the same scope.
Check a quote →Quote-checker numbers are currently illustrative, not verified ZIP-code estimates.