Leak Detection & Repair in Fairfax, VA
Residential Leak Detection Services Across Fairfax County & Northern Virginia
Water is patient.
A small leak inside a wall or beneath a slab can go undetected for months or even years, steadily saturating insulation, rotting wood framing, and creating conditions for mold. By the time a stain appears on a ceiling or a floor starts to feel soft, the damage has typically been building for a long time.
Because these hidden issues require a specialized approach, Long's Corporation has focused on helping homeowners in Fairfax County and Northern Virginia find and fix leaks since 1936. As a third-generation, women-owned company, we can use modern detection methods to locate the source accurately without tearing out walls unnecessarily.
We can fix your leak in no time. Call (571) 470-5898 or contact us online to schedule leak detection service in Fairfax, VA.
Your home deserves reliable comfort and dependable plumbing. Our financing options help make repairs, replacements, and installations easier to manage. Apply today and take the next step toward a more comfortable home.
How Modern Leak Detection Works
Locating a leak that isn't visible used to mean cutting into walls until the source was found. Modern detection methods have changed that significantly.
Acoustic listening devices can identify the sound signature of escaping water through concrete and drywall. Thermal imaging cameras detect temperature differentials caused by moisture movement behind surfaces, and pressure testing isolates which section of a line is losing water.
Used together, these tools allow our team to pinpoint the issue's location before a single wall is opened. That accuracy matters for limiting disruption to your home and for giving us the information we need to make the right repair.
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"Honest Company"
We switched to Long's Corporation from another company after a family member recommended Long's, and I'm so glad we did. They provided quick, caring, thorough, and honest service at fair and affordable prices.
Whitney H. -
"Great Communication"
Their booking process and communication was excellent. When I asked to change the brand of water heater they were very agreeable and promptly made the switch. The technician was efficient, tidy and knowledgeable.
Doreen B.
Why Choose Us?
Benefits of Working With an Expert Team
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Immediate, Same-Day Service
Some things can't wait. We can come see you today!
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100% Satisfaction GuaranteeWe never leave you unhappy! We guarantee it.
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Hablamos EspañolOur team is proud to help with Spanish services.
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Women-Owned Company
Three generations of woman-owned leadership.
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Affordable Financing Options
We make services affordable with financing options.
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24/7 Call Support Available
We're here to help you whenever you need us.
When a Leak Is a Symptom, Not the Problem
A pipe does not typically develop a leak in isolation. Corrosion often progresses uniformly through a material, meaning a pinhole leak in one section of copper frequently signals that adjacent sections are in a similar condition. Repairing only the visible failure point while leaving the surrounding pipe in place often leads to another leak in the same area within a short period.
This is especially relevant in older Northern Virginia neighborhoods, where the original copper or galvanized steel plumbing has been in service for 50 or more years. A thorough assessment by Long's Corporation can examine the condition of the surrounding system, not just the spot currently leaking. We have been making those calls for nearly 90 years, and we won't recommend more than what is actually needed.
Don’t let a small leak become a big problem. Call (571) 470-5898 or contact us online to schedule leak detection and repair in Fairfax, VA.
