At 10,152 Feet, Your Pipes Can Freeze in Any Month of the Year.
Leadville is the highest incorporated city in the United States, with one of the longest freeze seasons in the country and a housing stock largely built in the 1880s. Frozen pipes here are not bad luck. They are the most common cause of serious property damage we see in Lake County — and almost all of it is preventable.
The Call Always Comes on a Saturday
Every winter we get the same call from Leadville, and it almost always comes on a weekend. Someone drives up, opens the door, and hears water running somewhere they cannot see. The pipe did not break that morning. It broke on Tuesday.
That gap — between the failure and the discovery — is what turns a repair into a renovation. It is also the one part of this that a property owner has real control over.
Why Leadville is a Harder Case Than the Rest of Colorado
Standard freeze-prevention advice is written for places that have a winter. Leadville has something closer to a long cold season with a short interruption. Freezing temperatures are possible in any month of the year at this elevation, which breaks the mental model most homeowners are working from — the one where you winterize in October and stop worrying in April.
The building stock compounds it. Victorian-era homes were framed before anyone insulated an exterior wall on purpose, and over the following century they were re-plumbed piecemeal, one owner at a time. The result is supply lines running through wall cavities that never had a chance of staying above freezing on their own. When these systems fail, they rarely fail cleanly at one spot — several weak points give way across the same cold night.
Then there is occupancy. Between seasonal residences, long-term rentals, and homes owned by people who work over the pass, a large share of Leadville properties are empty on any given weeknight in February. An empty house does not notice a leak.
What Actually Happens Between Tuesday and Saturday
The pattern is consistent enough that we can usually reconstruct it from what we find on arrival.
Water expands as it freezes. A line running through an uninsulated exterior wall ices up overnight and the pipe splits — but the ice plug seals the break. Nothing leaks yet. Nothing is audible. The house looks exactly as it did.
Daytime temperatures rise enough to melt the plug, and pressurized water begins moving through the split. In a wall cavity it goes straight down into the framing and the subfloor rather than out where anyone would see it.
Insulation holds the water like a sponge and moves it sideways along the sill plate. Original flooring begins absorbing from below. In a house with a crawlspace, standing water starts collecting underneath.
Lath-and-plaster softens. Century-old millwork and flooring swell and start to separate. Given the right temperature, mold can establish on damp organic material within a day or two — and behind a wall, nothing disturbs it.
Four days of water in a structure. What would have been a drying job on Tuesday is now a demolition-and-rebuild job, and the original material that gave the house its value is the part most likely to be lost.
"The difference between a drying job and a gut renovation is almost never the size of the break. It is how many days passed before somebody walked in the door."
The One Thing That Matters Most: Heat, Year-Round
Set your thermostat to a minimum of 55 degrees Fahrenheit and leave it there all year. Not seasonally. All year.
This is advice everyone has heard and a lot of people quietly ignore, usually to save on heating during a month that does not feel like winter. At 10,152 feet, September and May will both hand you a hard freeze without much warning, and the properties that get caught are almost always the ones where someone turned the heat down because the calendar said it was safe.
Fifty-five degrees is a floor, not a guarantee — every heating system can fail. So pair it with something that will tell you when it does.
Put a Sensor Where You Cannot See
A water detection device that alerts your phone costs less than a night's lodging and is the difference between a puddle and a gut renovation. Put sensors under sinks on exterior walls, behind the washing machine and dishwasher, at the water heater, in the crawlspace, and near the main shutoff.
Consider a Smart Shutoff Valve
If the property sits empty for stretches, a smart shutoff valve on the main closes automatically when it detects flow the system does not expect. For a house you are not standing in, it is the closest thing to having someone there.
- Open cabinet doors under sinks on exterior walls so household heat reaches the pipes
- Let a faucet drip on the run most exposed to an exterior wall — moving water is much harder to freeze, and an open tap gives expanding ice somewhere to push
- Disconnect and drain garden hoses, and shut off the interior valve to any outdoor spigot
- Keep the garage door closed if any plumbing runs through it
- Do not close vents in unused rooms — shutting off a spare bedroom on an exterior wall is a common and expensive mistake
- Confirm the heat is running before you leave, not just that the thermostat is set
- A week or two: keep the heat at 55, leave interior doors open so warm air circulates through the house
- Arrange for a neighbor or caretaker to check the property after any severe cold event — a person with a key is worth more than any device
- A month or a full season: shut off the water at the main and drain the system completely
- Open every tap, flush every toilet, and drain the water heater — a drained system cannot burst
- If you are not confident doing this, pay a plumber once rather than paying a restoration company later
- Check your insurance policy's vacancy language before you go, not after
The Insurance Detail Most Owners Miss
Sudden and accidental water damage, such as a burst pipe, is typically covered under a standard homeowners policy. But many policies also contain conditions about maintaining heat or shutting off the water supply in a property left vacant for an extended period. A claim that would be covered in an occupied home is not automatically covered in one that has been sitting empty.
Read your policy's vacancy provisions, or call your agent and ask them directly. It takes five minutes, and it is exactly the kind of detail that decides a claim after the fact.
Leadville Services
If a Pipe Has Already Frozen
A tap that produces nothing, or a thin trickle where it should run full, usually means ice in the line. The pipe has not necessarily burst yet, and what you do next matters.
- Shut off the water at the main first — if the line has already split, you will not find out until the ice melts and water starts moving
- Leave the tap open, so flowing water helps clear the remaining blockage as it thaws
- Apply gentle heat with a hair dryer, heating pad, or warm towels, working from the tap back toward the frozen section
- If the pipe runs inside a wall or you cannot locate the frozen section, stop and call a plumber — opening a wall in the wrong place costs more than the call
No torches, no propane heaters aimed into a wall cavity. In a timber-framed house with a century of dry wood behind the plaster, this is how a frozen pipe becomes a house fire. We restore both kinds of damage, and we would much rather you only ever needed one.
If It Has Already Burst
Shut off the water at the main immediately. Kill power to affected areas at the breaker if water is anywhere near outlets, fixtures, or the panel. Then start documenting — photograph everything before you move anything, because your insurance carrier will want to see the damage in place.
Then call someone. Water damage is a clock: what is a drying job in the first day becomes a demolition job in the first week. In a historic Leadville home, that window is what determines whether original flooring, millwork, and lath-and-plaster can be saved or has to come out.
Why Drying at 10,000 Feet is a Different Job
Refrigerant dehumidifiers lose effective capacity as altitude rises, which means a drying plan that works fine at 6,000 feet can stall out in Leadville. Equipment selection and timelines both have to be matched to the elevation, and moisture readings have to confirm the structure is actually dry rather than merely dry on the surface. If a contractor quotes you a standard timeline without asking about elevation, that is worth a follow-up question.
The Short Version
Set the heat at 55 and leave it there year-round. Put sensors where you cannot see. Drain the system if the house will be empty for a season. Check what your policy says about vacancy before you need to know. And if you do find water, shut off the main and start making calls — the first day is worth more than the next five.
Frozen or Burst Pipe in Leadville?
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