What to Do About Frozen, Cracked Pipes

Winter in Redmond, WA, can bring stretches of freezing temperatures, along with snow and ice. Preparing your home’s plumbing for cold weather is essential to avoid frozen pipes. When a pipe freezes and cracks, it can release large amounts of water into your home and cause costly damage. Here’s what you need to know about why pipes freeze, what happens when they burst, and how to prevent problems.

Why Do Pipes Freeze?

Understanding why pipes freeze makes it easier to prevent damage during cold weather.

Poor or Missing Pipe Insulation

The pipes most likely to freeze are those located in unheated or poorly insulated areas such as garages, crawl spaces, attics, and exterior walls. Even insulated pipes can become vulnerable if the insulation is damaged or deteriorated. Without proper thermal protection, cold air can quickly lower the temperature of the pipe and the water inside it.

Extremely Cold Outdoor Temperatures

Pipes are at greater risk when temperatures drop well below freezing, especially during prolonged cold snaps. While 20°F is often cited as a higher-risk threshold, pipes can freeze at 32°F or below if exposed long enough. As water inside the pipe freezes, it expands. That expansion increases internal pressure, which can cause the pipe to crack or split.

Lack of Water Flow Through Pipes

Moving water is less likely to freeze than standing water. When water sits still inside pipes during freezing weather, ice can form more easily. However, shutting off your water supply while leaving for vacation does not automatically increase freeze risk if the system is properly drained and winterized. If water remains in the lines, though, it can freeze and lead to damage.

What Happens When a Pipe Freezes and Bursts?

Frozen pipes do not always show immediate signs of damage. In many cases, homeowners only notice a problem once the pipe thaws and water begins escaping.

Severe Flooding Once the Pipe Thaws

The danger comes from the pressure created by expanding ice. The crack often forms while the pipe is frozen, but water may not leak until temperatures rise and the ice melts. Once thawed, water can rapidly flow through the damaged section and flood the surrounding area.

Damage to Walls, Ceilings, and Floors

Water from a burst pipe spreads quickly and follows the path of least resistance. It can soak drywall, flooring, ceilings, and structural framing. Warped flooring, stained ceilings, and damaged baseboards can develop within hours if the leak is not addressed.

Ruined Insulation

Insulation that becomes saturated loses its effectiveness and often must be replaced. Wet insulation can also trap moisture inside walls, increasing the risk of further damage.

Mold and Mildew Growth

Moisture from a burst pipe creates ideal conditions for mold growth, sometimes within 24 to 48 hours. Mold can cause structural damage and may create indoor air quality concerns, especially for individuals with allergies or respiratory conditions.

Electrical Hazards

Water can travel into electrical boxes, wiring, and fixtures. If you suspect water has reached electrical components, avoid contact and call professionals immediately. Mixing electricity and water creates a serious safety risk.

Increased Water Bills

A hidden crack can waste significant amounts of water. A sudden spike in your water bill may be one of the first indicators that a pipe has burst behind walls or under flooring.

What to Do When a Pipe Freezes

If you suspect a pipe is frozen, act quickly. First, shut off your home’s main water supply to minimize potential flooding. Next, avoid using plumbing fixtures in the affected area. If you can safely identify the frozen section, you may apply gentle heat using a hair dryer or warm towels; never use an open flame. If you see cracks, leaks, or water damage, contact a licensed plumber right away.

How to Prevent Frozen Pipes

Insulate Exposed Pipes

Identify pipes in unheated areas and insulate them using foam sleeves or approved pipe insulation materials. Proper insulation significantly reduces freeze risk.

Let Faucets Drip During Severe Cold

Allowing a slow drip during extreme cold can help keep water moving and relieve pressure buildup. Focus on fixtures connected to exterior walls.

Open Cabinet Doors

Opening cabinets under sinks allows warm indoor air to circulate around pipes, helping reduce the chance of freezing.

Keep the Heat On During Vacations

Never turn off your heat completely during winter. Keep the thermostat set to at least 55°F, even when you’re away. Smart thermostats allow remote temperature monitoring and adjustments if weather conditions change.

Get Expert Frozen Pipe Repair in Redmond Today

If you experience frozen or cracked pipes, Benjamin Franklin Plumbing® is ready to help. We provide professional frozen pipe repair and emergency plumbing services for homes and businesses in Redmond, WA. Our team uses advanced leak detection equipment to locate damage quickly and recommend the most effective repair solution.

Contact Benjamin Franklin Plumbing® today for expert assistance with frozen pipe repair and winter plumbing protection in Redmond.