Foundation Leak Repair in Denver
Serving Denver Since 1962 – Slab Leak Detection Through Restoration
Water moving through or beneath a concrete foundation doesn’t announce itself. It shows up in your water bill, in a warm spot on your floor, or in the faint sound of running water with every faucet closed. Allen Service has been diagnosing and repairing foundation leaks for Denver homeowners and businesses since 1962, when Jeff and Mike Allen’s grandfather started the company. Third-generation ownership means the same family values still drive every service call.
Foundation leaks include any water intrusion through or beneath the concrete structure of your home, including slab leaks caused by pipe failures beneath the slab. Our plumbers arrive in uniform with fully stocked trucks, ready to diagnose the source and begin repairs on the first visit. Same-day service is available for foundation leak calls throughout Denver.
If you’re seeing signs of a foundation or slab leak, don’t wait for the damage to grow. Call Allen Service at (970) 431-6574 to schedule same-day service in Denver.Why Denver Homes Are Prone to Foundation Leaks
Denver’s geography and climate create a specific set of pressures on residential foundations. The expansive clay soils common throughout the metro swell with spring moisture and contract during dry stretches, placing persistent stress on concrete slabs and the pipes running through them. That ground movement doesn’t stop at the foundation wall.
Denver Water’s supply contains calcium and magnesium that causes scale to form inside pipes, gradually narrowing flow paths and increasing pressure on fittings. Older pipes often develop a thick scale layer that reduces flow but can shield pipe walls from direct corrosion. Add Denver’s freeze-thaw cycles. They stress pipes in unheated basements and crawl spaces, and older homes built with galvanized steel or early copper runs face a higher-than-average risk of under-slab pipe failure.
Warning Signs of a Foundation or Slab Leak
Most foundation leaks are invisible until the damage has already started. These are the signals Denver homeowners should watch for:
- Unexplained water bill increases with no change in household usage
- Warm or damp spots on floors, especially on concrete or tile, pointing to a hot water line leaking beneath the slab
- Running water sounds when all fixtures and appliances are off
- Mold, mildew, or persistent musty odors in lower-level areas of the home
- New cracks in walls, flooring, or the foundation caused by water eroding soil beneath the slab and triggering settling
- Reduced water pressure throughout the home
Why Denver Homeowners Call Allen Service
Foundation leak repair in Denver requires a plumber who shows up prepared. Our trucks are stocked to handle most under-slab repairs on the first visit, limiting disruption to your home and reducing callbacks. Every technician wears shoe coverings, protects work areas, and communicates clearly at each stage of the job.
Every job is backed by our customer-first guarantee. If our technician conduct standards aren’t met, you receive four years of our Service Membership at no charge. For ongoing plumbing maintenance after a repair, the Membership Rewards Plan provides priority scheduling, routine system checkups, and member perks. We also offer 24/7 emergency response for foundation and slab leak situations, and flexible financing options are available to make unexpected repairs manageable.
Hear From Our Happy Customers
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“Allen Service came out promptly and saved the day for me! My 50-year-old condo needed service immediately & they delivered! I recommend this company wholeheartedly. Ask for Brian and Michael!”Drew V.
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“The company was responsive and went above and beyond. They worked through my broken sink issue and were informative along the way. Extremely polite and efficient. I would absolutely ask Allen for service again!”Dorothy G.
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“Allen has been our preferred vendor for maintenance and repairs across our entire apartment community. Their team is consistently prompt, professional, & efficient. They respond quickly, diagnose the problem accurately, & complete repairs quickly.”Alison W.
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“Zach Workman did an excellent job fixing my AC capacitor. And even gave me a very well explained run down of how AC units work, especially capacitors. This was beneficial to me as I am a tradesman myself. Highly recommend Allen Service.”Chance I.
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“I had a great experience with Allen Service when our AC stopped working. Kevin, was extremely polite and knowledgeable. He was able to diagnose and resolve the issue quickly and even provided some informative advice for us moving forward.”Jenna A.
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“Awesome service and customer care. They were stupendous! I noticed immediately how positive and energetic they were, working together as a team to rectify our issues. These young men were personable, courteous, & very informative.”Nicholas S.
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“My technician today was professional, courteous, thorough, and made everything easy to understand. My AC had stopped working and Allen was able to get someone to my house within 4 hours which was exceptional and appreciated!”Shannon M.
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“A wonderful experience with both of the technicians today. They arrived early, were pleasant, very professional, and installed an amazing unit.”Mary F.
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“Exceptional customer service from the first phone call, to scheduling, to completion of service appointment, to diagnosing the A/C not cooling properly. Extremely impressed. I will gladly be telling everyone I know to call for any of your services!”Christie S.
is Just a Click Away Colorado’s Trusted Home Service Team
Tell us what you need, and we’ll take care of the rest.
Foundation Leak Repair Across the Denver Metro
Allen Service serves residential and commercial customers throughout Denver and the surrounding metro area. Whether you’re in an older neighborhood closer to the city core or a newer development on the metro’s edge, our plumbers can reach you the same day for foundation and slab leak service. Call our Denver Metro office directly at (970) 431-6574.
- Allenspark
- Ault
- Aurora
- Bellvue
- Berthoud
- Boulder
- Broomfield
- Castle Rock
- Centennial
- Commerce City
- Denver
- Eaton
- Firestone
- Fort Collins
- Fort Lupton
- Gilcrest
- Greeley
- Hudson
- Jamestown
- Johnstown
- Kersey
- La Salle
- Lafayette
- LaPorte
- Longmont
- Loveland
- Lyons
- Milliken
- Niwot
- Plattville
- Severance
- Timnath
- Wellington
- Windsor
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The Help You Need
is Just a Click Away Colorado’s Trusted Home Service TeamTell us what you need, and we’ll take care of the rest. -
Allen Services
Membership Rewards Your Home’s VIP PassEnjoy routine check-ups, priority scheduling, and member-only perks that keep your home running smoothly. -
Easy Financing for
Any Budget Affordable Payments. Exceptional Service.Our financing plans make it simple to invest in your home when it matters most.
From Detection to Restoration: How We Handle Foundation Leaks
Locating a foundation leak before touching concrete or flooring protects your home and limits repair costs. We use acoustic listening equipment and thermal imaging to pinpoint the leak source non-invasively, keeping the repair footprint as small as possible.
Repair Methods for Under-Slab Pipe Failures
Once the leak is located, the repair method depends on what we find. Common approaches include pipe patching for isolated failures, pipe rerouting through walls or above the slab when access beneath is limited, and full pipe replacement for more extensive damage. When a foundation leak involves sewer line damage beneath the slab, trenchless sewer repair is available through our sewer and drain division. Work that affects structural elements may require permits; our licensed plumbers handle those requirements as part of the job.
In-House Water Damage Restoration
Most plumbing companies hand you a referral once the pipe is fixed. Allen Service carries water damage restoration and mold inspection in-house, so the same team that repairs the leak handles cleanup and remediation. You don’t coordinate two contractors, manage two schedules, or explain the situation twice. Persistent moisture beneath a foundation slab creates conditions favorable to mold growth, particularly in lower-level spaces. Having restoration capability on the same team means that risk can be addressed before it compounds. Our commitment is to solve the problem on the first visit and leave your home in better condition than we found it.
