Frozen Pipes in Trussville: Prevention and What to Do
Trussville Plumbing gets its busiest frozen-pipe calls on the few nights each winter when the temperature drops well below freezing. Trussville homes are built for heat, not cold, and that is exactly why a hard freeze catches them off guard.
Research from the University of Illinois found that uninsulated pipes in unheated spaces start to freeze when the outside temperature falls to about 20°F. North Alabama has reached single digits in recent winters, including January 2025.
A frozen pipe is an inconvenience. A burst pipe is a flooded kitchen, wet drywall and a repair bill. The difference usually comes down to a few simple steps taken before the cold arrives.
Here is what puts Trussville pipes at risk, how to protect them and what to do if one freezes anyway.
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Frozen Pipe Prevention in Trussville, AL
Why Pipes in Trussville Homes Freeze
Homes in the South often run water lines through crawlspaces, exterior walls, attics and garages, which are places that are fine most of the year but sit outside the heated envelope of the house. When a cold snap hits, those runs are the first to freeze. The University of Illinois Extension frozen pipe guide covers the same steps we recommend: insulate exposed lines, let faucets drip, and know your shutoff.
Pipes do not usually burst at the ice itself. Once ice blocks a pipe, pressure builds in the section between the ice and the closed faucet, and that pressure is what splits the pipe. That is why a burst can show up several feet away from where the freeze happened.
The Pipes Most at Risk
Crawlspace Lines
Many Trussville homes sit over a vented crawlspace. Cold air moves straight through the vents and across bare supply lines.
Exterior Walls and Outdoor Spigots
Kitchen and bathroom sinks on outside walls, along with hose bibs, are common failure points. A hose left connected to a spigot traps water and makes a freeze more likely.
Garages and Attics
Water heaters, laundry lines and attic runs in unheated spaces are exposed on every cold night.
How to Prevent Frozen Pipes
Before winter, insulate exposed pipes in the crawlspace, garage and attic with foam pipe sleeves, and close or cover crawlspace vents during hard freezes. Disconnect garden hoses and cover outdoor spigots.
When a freeze is forecast, let the faucets on exterior walls drip slowly, both hot and cold. Moving water is far less likely to freeze, and an open faucet relieves the pressure that causes bursts. Open the cabinet doors under sinks so warm room air reaches the pipes, and keep the thermostat at a steady temperature overnight, even if you are away.
If you are leaving town during a cold spell, set the heat no lower than about 55°F, or shut off the main water valve and drain the lines.
What to Do If a Pipe Freezes
If a faucet only trickles or produces nothing during a cold snap, a line is likely frozen. Leave that faucet open so water can flow once the ice melts.
Warm the pipe gently with a hair dryer, a space heater kept at a safe distance, or warm towels, working from the faucet back toward the frozen section. Never use an open flame or a propane torch. It can damage the pipe and it is a real fire risk inside walls and crawlspaces.
If you cannot reach the frozen section, or you are not sure where it is, call a plumber rather than guessing.
If a Pipe Bursts
Shut off the main water valve immediately. Everyone in the house should know where it is before winter starts. Then turn off the water heater, move valuables out of the way and call for help. Our burst pipe and water leak repair crews respond around the clock, and our 24/7 emergency plumbing line is staffed on the coldest nights of the year.
After the repair, check for hidden water damage in walls, floors and the crawlspace. Slow leaks from a cracked fitting can keep running out of sight for weeks. Our leak detection service can confirm the system is dry and tight.
When to Reroute or Repipe
If the same line freezes every winter, the long-term fix is to move it inside the heated space or replace it. Aging galvanized pipe that has been through several freezes is also a candidate for our pipe repair and repiping service.
Get Ahead of the Next Freeze
We can walk your crawlspace, garage and attic, point out the lines most likely to freeze and insulate or reroute them before the next cold front. Call Trussville Plumbing at 205 537 0689.