Preparing your pipes for a New Braunfels freeze

Preparing pipes for a freeze in New Braunfels TX comes down to four things: insulate every exposed line, seal the openings where cold air reaches them, drip the faucets farthest from the meter, and know where your main shutoff is before you need it. Do those four things and your plumbing rides out a 20-degree night without a burst. Skip them and you join the hundreds of homeowners who call us the morning after a hard freeze with water running down a wall.

New Braunfels sits in a freeze pocket. Cold air drains off the Hill Country into the Comal and Guadalupe river valleys and settles overnight, so a forecast of 28 degrees in San Antonio can mean 22 at your house off Loop 337. This guide covers what to do before the first freeze, what to do during one, and how to handle the aftermath if a pipe splits anyway.

Why New Braunfels pipes freeze so fast

New Braunfels homes freeze faster than most Texas homeowners expect because our plumbing was built for heat, not cold. Water expands about 9 percent when it turns to ice, and that expansion is what splits copper, PEX, and CPVC alike. A half-inch copper line at 22 degrees with no insulation can freeze solid in under four hours.

Three local factors make it worse. First, slab-on-grade construction is everywhere in Comal County, and slab homes run supply lines through the attic and exterior walls where cold air moves freely. Second, many homes built before 2000 have hose bibs and irrigation stubs that were never wrapped. Third, the clay soil here shifts with moisture, and shifting soil is what turns a hairline crack into a full pipe repair New Braunfels TX call after the thaw.

If you have ever had a line freeze and thaw without bursting, you are not in the clear. That pipe is now fatigued. We see repeat failures on the same run two and three winters in a row.

How do I prepare my pipes for a freeze in New Braunfels?

You prepare your pipes for a freeze in New Braunfels by working from the outside in: disconnect hoses, wrap exposed lines, seal crawlspace and attic vents, then set the indoor drip. Do it in the afternoon while it is still warm, not at 9 p.m. when the temperature is already dropping.

Here is the order we walk homeowners through each November and December:

1. Disconnect every garden hose and drain the hose bib. A hose left connected traps water in the bib and the bib splits first.
2. Shut off and drain the irrigation system. If you have a backflow preventer, that brass assembly is the single most freeze-prone piece of plumbing on the property.
3. Wrap exposed pipe in the attic, garage, and along exterior walls with foam pipe insulation or heat cable.
4. Seal foundation vents and attic soffit vents with foam board or vent covers. Cold air under a pier-and-beam house is what freezes the lines running to your kitchen.
5. Open cabinet doors under kitchen and bathroom sinks so warm indoor air reaches the supply lines.
6. Locate your main shutoff. Find it now, tag it, and make sure it actually turns. A shutoff that has not moved in ten years will not move at 6 a.m. in an emergency.

If you are on a pier-and-beam foundation, add step 7: close the skirting and check for gaps. We handle this as part of our residential plumbing New Braunfels TX winter check for homeowners who would rather not crawl under the house themselves.

What temperature should I worry about frozen pipes in Texas?

Start worrying at 28 degrees Fahrenheit, and treat anything below 20 degrees as a hard freeze that requires full preparation. Exposed pipes begin freezing at 28 degrees; pipes inside an unheated attic or crawlspace freeze when the outdoor air hits the low 20s. The National Weather Service issues a hard freeze warning for our area at 28 degrees or lower for two or more hours.

Wind matters as much as the number. A 25-degree night with 20 mph wind pulls heat out of an exposed pipe roughly twice as fast as a still 25-degree night. That is why the 2021 freeze caused so much damage here even though the official low was not record-setting for very long.

Duration is the third variable. A two-hour dip to 26 degrees is survivable for most insulated lines. Eight hours below freezing is not. Check the hourly forecast, not just the overnight low.

Insulating pipes in New Braunfels: what actually works

Insulating pipes in New Braunfels works when you match the material to the location. Foam tube insulation handles most attic and garage runs. Heat cable is for the lines you cannot reach or that have frozen before. Fiberglass wrap is a last resort and only helps when it stays dry.

What we install most often:

• Closed-cell foam tube sleeves (the gray or black split tubes) on all accessible supply lines. Cheap, effective down to about 20 degrees.
• Self-regulating heat cable on the main line from the meter and on any run that has frozen before. It draws about 5 watts per foot and only runs when it needs to.
• Faucet covers on every exterior hose bib. The hard foam domes cost a few dollars and stop the most common freeze failure we see.
• Pipe insulation on the water heater's cold inlet and outlet in the garage. Ten minutes of work, real difference on a cold morning.

Skip the newspaper-and-tape method. It gets wet, loses all insulating value, and hides the leak when the pipe finally splits. If you want a professional to spec the job, our leak detection New Braunfels TX team can also map which lines are most exposed before the first freeze.

Should I drip my faucets during a freeze near me?

Yes, drip your faucets during a freeze. A pencil-lead-thin stream on the faucet farthest from your water meter keeps water moving through the line and relieves pressure if ice forms. Moving water freezes much more slowly than standing water, and the open faucet gives expanding ice somewhere to go instead of splitting the pipe.

Which faucets to drip, in order of priority:

• The faucet on the exterior wall farthest from where the main line enters the house.
• Any fixture over a slab or in a bathroom above the garage.
• Both hot and cold sides of a single faucet - the hot line freezes first in most homes.

Set the thermostat to 68 degrees or higher and leave it there overnight, even if you normally sleep cold. The extra few dollars on the gas bill is nothing next to a $1,200 water damage repair. If you leave town during a freeze, do not just drip - shut the main off and drain the lines.

What to watch out for

The most expensive freeze mistakes are the ones that happen after the thaw, not during it. Water does not always show up where the pipe broke - it follows the framing and shows up ten feet away.

Watch for these:

• Thawing a frozen line with an open flame. A propane torch will melt PEX and ignite attic insulation. Use a hair dryer, heat gun on low, or warm towels.
• Assuming no water means no break. A frozen line often splits at a joint you cannot see. When it thaws, that joint weeps into the wall.
• Leaving the irrigation backflow exposed. It is the number one freeze failure in Comal County, and it is also the easiest to prevent.
• Ignoring a dripping sound in the wall. If you hear water running when nothing is on, shut the main off and call us.
• Running the water heater hard on a cold morning. A cold inlet line plus a cold tank is when we see the most water heater repair New Braunfels TX calls.

When to call a professional

Call a professional when water is already where it should not be. If you see a bulge in drywall, water staining on a ceiling, or a wet spot on the slab that grows, the line has already failed and the clock is running.

We handle frozen pipe repair in New Braunfels with same-day service during freeze events. Our technicians find the break, isolate the line, repair or replace the section, and pressure-test before we leave. If the break is on a main line or under the slab, we bring the equipment to do it without tearing up your whole floor.

If you are not sure whether a line is frozen or broken, call us anyway. A two-minute phone diagnosis is cheaper than a weekend of guessing. We also handle the follow-up work - plumbing repairs New Braunfels TX after a freeze often include replacing a section of line that was already near the end of its life.

Frequently Asked Questions

How do I prepare my pipes for a freeze in New Braunfels?

Disconnect hoses, drain the irrigation system, wrap exposed pipe in the attic and garage, seal foundation and soffit vents, open cabinet doors, and drip the faucet farthest from the meter. Set the thermostat to 68 degrees or higher. Do the outdoor work in the afternoon before the temperature drops.

What temperature should I worry about frozen pipes in Texas?

Start preparing at 28 degrees and treat anything below 20 degrees as a hard freeze. Exposed pipes begin freezing at 28 degrees, and pipes in unheated attics or crawlspaces freeze in the low 20s. Wind and duration matter as much as the raw temperature.

Who repairs frozen pipes in New Braunfels TX?

Comal Crest Plumbing repairs frozen and burst pipes across New Braunfels and Comal County. We handle same-day emergency calls during freeze events, find the break, repair or replace the section, and pressure-test the line before we leave. Call (737) 707-1110.

Should I drip my faucets during a freeze near me?

Yes. A pencil-lead-thin stream on the faucet farthest from your water meter keeps water moving and relieves pressure if ice forms. Drip both hot and cold sides. If you leave town, shut the main off and drain the lines instead of just dripping.

How much does frozen pipe repair cost in New Braunfels?

Typical 2026 pricing for a single accessible frozen pipe repair in this area runs $250 to $600, depending on access and pipe material. Slab or in-wall repairs run higher. We quote the job before we start, and we do not charge a diagnostic fee on the first visit during a freeze event.

Get help with plumbing in New Braunfels

If a pipe has already split, or you want a professional to winterize your plumbing before the next hard freeze, call Comal Crest Plumbing at (737) 707-1110. We serve New Braunfels and the surrounding Comal County area with same-day emergency response during freeze events.