How Extreme Cold Impacts Your Plumbing System

Wisconsin winters are legendary for their beauty, but they are equally notorious for the havoc they wreak on residential and commercial plumbing. At H.J. Pertzborn Plumbing & Fire Protection, we have seen firsthand how plummeting temperatures can turn a quiet night into a plumbing emergency. Understanding how cold affects your pipes is the first step in protecting your property.

What Freezing Temperatures Do to Pipes

When water freezes, it undergoes a physical expansion of approximately 9%. Inside the confined space of a copper or plastic pipe, this expansion creates pressure that can damage the pipe. Contrary to popular belief, pipes usually do not burst at the exact point where ice forms. Instead, the ice creates a blockage, and the resulting pressure buildup between that blockage and a closed faucet causes the pipe to rupture. In Wisconsin, pipes located along exterior walls, in unheated basements, or in crawl spaces are most vulnerable to these freezing cycles.

The Risks of Frozen and Burst Pipes During Wisconsin Winters

The consequences of a burst pipe can be catastrophic for homeowners and businessowners. Beyond the initial flood, property owners face long-term issues like mold growth, extensive water damage to structural elements, and costly system downtime. During prolonged sub-zero snaps and extreme wind chills, a pipe can freeze in a matter of hours. The real danger often arises during the thaw; as the ice melts, water rushes through the new fracture, causing rapid property damage.

How to Prevent Frozen Pipes in Extreme Cold

Preparation is your best defense against the Wisconsin chill. The most important winter plumbing rule is simple: keep consistent heat throughout your home and eliminate cold air leaks wherever possible. Cold, drafty areas and existing leaks dramatically increase the risk of frozen or burst pipes. We recommend these actionable steps:

  • Insulate and Seal: Use foam sleeves on exposed pipes and seal air leaks in basements or crawl spaces.
  • Drip Your Faucets: Allowing a tiny trickle of water to flow relieves the internal pressure that leads to bursts.
  • Consistent Heat: Maintain a steady indoor temperature, even at night or when away.
  • Fix Existing Issues: Address slow drains or minor leaks now, as these can exacerbate freezing.

When to Call H.J. Pertzborn Plumbing & Fire Protection

If you turn on a tap and nothing comes out, see visible frost on a pipe, or hear unusual clanging, you need professional help immediately. Since 1928, H.J. Pertzborn Plumbing & Fire Protection has been the trusted local expert for Madison families and businesses. We offer same-day service to ensure your system is safe and functional. Contact us today!

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