Common Causes of Leaks in Denver Homes
Denver's climate and housing stock create specific leak risks. Hard water is common along the Front Range, leading to mineral buildup that can corrode pipes and fittings over time. In older homes, original galvanized steel pipes are especially prone to this.
Freeze-thaw cycles are a major culprit. A sudden cold snap can cause pipes in uninsulated crawl spaces or exterior walls to freeze and crack. When the ice thaws, a major leak can develop. Settling due to expansive clay soils common in the area can also stress plumbing joints and connections.
What You Can Safely Check Before Calling
- Check under sinks for moisture in the cabinet or a loose drain connection.
- Inspect toilet bases for water and listen for a constant hissing sound from the tank.
- Look at your water heater for pooling water or corrosion around the pressure relief valve.
- Expose any accessible pipes in basements or crawl spaces for obvious drips or spray.
- Note if the leak coincides with using a specific fixture, like a shower or washing machine.
- Turn off the water supply to the leaking fixture or appliance using its local shutoff valve.
- If you cannot isolate the leak, locate and turn off your home's main water valve.
How a Plumber Diagnoses and Fixes Your Leak
The plumber we connect you with will start by asking about the leak's history and checking the areas you've already inspected. They often use specialized tools like electronic listening devices to pinpoint leaks behind walls or under slabs without unnecessary demolition.
For slab leaks common in Denver's concrete foundations, they may use a pipe locator and then perform a small, targeted excavation. Repair methods depend on the pipe material and location. It could involve soldering a copper joint, replacing a section of PEX, or using a compression fitting. The goal is a permanent fix that accounts for local water pressure and conditions.
Timing, Cost, and When It's an Emergency
A simple fix like a worn washer or valve might take an hour. Locating and repairing a leak inside a wall or under a slab can take half a day or more. Costs vary with the job's complexity and parts needed, but repairs typically range from a couple hundred to over a thousand dollars.
A leak is an emergency if you cannot stop the water flow, if there is significant flooding, if water is near electrical systems, or if you suspect a sewer line issue. In these cases, shut off the main water and call for service immediately to prevent structural damage or mold.
Questions homeowners ask
Why do I hear water running when nothing is on?
This often signals a leak. In Denver, a running toilet is a frequent cause due to worn flappers. It could also be a leak in a pipe behind a wall or under the slab, especially after ground shifts from our clay soil. A plumber can use sound detection to find it.
Can a leak wait until morning?
If you've shut off the water to the specific fixture and the leak has stopped, it can often wait. If water is actively spraying, pooling, or threatening ceilings or electrical, do not wait. A nighttime freeze in Boulder or Golden could also turn a small drip into a burst pipe by morning.
How do pros find a leak without tearing up my floor?
Plumbers use non-invasive methods first. They might pressurize the lines and monitor pressure loss, use acoustic listening devices to hear the leak's sound, or employ thermal imaging cameras to spot temperature differences from water in walls or floors.
Are leaks more common in older Denver homes?
Yes. Homes in Capitol Hill or Highlands built before the 1970s often have galvanized steel pipes that corrode from the inside out due to our hard water. These pipes have a limited lifespan and are a common source of leaks and reduced water pressure.
What should I do if I suspect a slab leak?
Signs include warm spots on concrete floors, a sound of running water underfoot, or unexplained increases in your water bill. Turn off the water if possible and call a plumber. They will confirm the leak's location before planning a repair, which may involve accessing the pipe through a small section of the slab.