Concrete Sealing & Crack Repair in Fort Collins, CO and Surrounding Areas
Serving Berthoud, Johnstown, Fort Collins, Loveland, Windsor, or surrounding Northern Colorado areas
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Colorado's freeze-thaw cycle is hard on concrete. Water gets into hairline cracks, freezes, expands, and turns a small crack into a bigger one by spring. J. Allen Construction Company has handled concrete sealing and crack repair for driveways, patios, walkways, and garage floors across Fort Collins, Loveland, Windsor, Johnstown, Berthoud, and the rest of Northern Colorado and Southern Wyoming since 1998. We're licensed and insured, and Jerry Allen stays hands-on with the maintenance work we take on, concrete included. Concrete is one of those parts of a home nobody thinks about until it's cracked, heaved, or stained, and by then the fix usually costs more than it would have a year earlier.
Why Concrete Sealing & Crack Repair Matters in Fort Collins
Crack assessment and repair for driveways, patios, walkways, and garage floors. Joint cleaning and resealing where old sealant has failed or worn away. Surface sealing to protect against moisture, freeze-thaw damage, and de-icing salt. Spot repair for isolated cracks or spalling, without the cost of a full replacement.
Our Concrete Sealing & Crack Repair Services
Crack assessment and repair for driveways, patios, walkways, and garage floors. Joint cleaning and resealing where old sealant has failed or worn away. Surface sealing to protect against moisture, freeze-thaw damage, and de-icing salt. Spot repair for isolated cracks or spalling, without the cost of a full replacement.
Our Process
  1. Assessment. We inspect cracks, joints, and overall surface condition before recommending a scope of work. 
  2. Crack Prep and Fill. We clean out and fill cracks so they stop spreading under the next freeze-thaw cycle. 
  3. Surface Cleaning. We prep the concrete thoroughly so sealant actually bonds instead of peeling within a season. 
  4. Sealant Application. We apply a sealer suited to the surface and how much sun and traffic it sees. 
  5. Final Walkthrough. We point out any spots worth watching and talk through timing for the next reseal.
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Why Choose Us: Local Know How, No Shortcuts
We've poured and maintained concrete as part of custom homes and additions across Northern Colorado since 1998, so we know exactly how our winters and our altitude treat a slab differently than a milder climate would. We'll also tell you when a crack is cosmetic and when it's worth watching more closely. Not every hairline crack is an emergency, and not every homeowner needs the most aggressive repair option on the list. New concrete often comes up as part of a home addition or a custom home build, and keeping it sealed afterward is what protects that investment for the long run instead of letting it crack within a few winters.
Service Area & Coverage
If your concrete work is standalone, it's also something we handle as part of our home maintenance program. We seal and repair concrete for homeowners throughout Fort Collins, Loveland, Windsor, Johnstown, Berthoud, and the surrounding Northern Colorado and Southern Wyoming area. Request a concrete repair estimate for Fort Collins, before the next freeze-thaw cycle does more damage. Want to see similar work we've completed? Browse finished driveways and patios in our project gallery.

Take the Next Step

Ready to update your home? Call us for an estimate and let’s talk about your goals.


Contact us:

  • Call us today at (970) 568-7351 for an on-site assessment.
  • Or send us a quick note through our online form, and we’ll be in touch soon.


We stand behind our work with the kind of quality you can count on for the long haul.

What Folks Around Here Are Saying

Marvin J

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We used J Allen for a complete kitchen and master bath remodel and was extremely pleased with the finished products. Jerry and his team provided innovative suggestions in the design and the attention to detail and workmanship was outstanding. We are now using J Allen to build our new home!

Richard S

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Great people working for you!!!

tj v

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I was working in Germany when we contracted J. Allen Construction to build our retirement home in Colorado. We selected J. Allen Construction due to their exceptional reputation for quality construction, professional integrity and commitment to maintain schedule. We knew that even though we weren't present to inspect construction, that Jerry Allen would build the house as if it was his own. Over the last 20 years J. Allen Construction has contacted us every year to inspect the house for necessary repairs or upgrades and used his quality construction crew and subs to perform any needed work. We highly recommend J. Allen Construction. Quality, Integrity, and Service are the fundamentals of this company.