Protect Your Pipes from Freezing

Frozen pipes are one of the most common and expensive winter problems homeowners face. When water freezes inside a pipe, it expands, increasing the risk of cracked or burst pipes and costly water damage. While many homeowners rely on foam pipe insulation for protection, insulation alone has limitations. In higher-risk situations, heat tape or pipe heat cable may be necessary to provide reliable pipe freeze protection.

Foam insulation works by slowing heat loss—but it does not generate heat. In unheated areas such as crawl spaces, garages, attics, or exterior walls, there may be little ambient warmth to retain. During prolonged cold spells, even insulated pipes can freeze because there is no heat source to keep water lines above freezing temperatures.

Insulation is also vulnerable to installation issues. Gaps at fittings, valves, and wall penetrations allow cold air to reach the pipe. Crushed or poorly fitted insulation loses effectiveness, and cold air infiltration from rim joists, foundation gaps, or vents can quickly strip heat away. In these situations, pipe insulation alone may provide a false sense of security.

Heat tape (pipe heat cable) provides active freeze protection by supplying controlled warmth directly to plumbing lines. Modern self-regulating heat cables adjust heat output based on surrounding temperatures, making them safer and more energy-efficient than older products. When installed properly and used according to manufacturer instructions, heat tape is an effective solution for preventing frozen pipes during extreme or extended cold weather.

Example of an Anti-freeze product called "PipeFreeze"

Anti-freeze (frost-free) spigots are another important freeze-prevention feature, particularly for outdoor plumbing. Unlike standard hose bibs, frost-free spigots are designed so the shut-off valve is located inside the heated portion of the home. When the spigot is turned off, water drains out of the exterior section, reducing the chance of freezing. However, these spigots only work properly if hoses are disconnected before winter—leaving a hose attached can trap water and cause freezing.

Cross-section of an anti-freeze spigot

Common Situations Where Pipes May Be Unprotected

Homeowners often find vulnerable pipes in:

• Crawl spaces or unheated basements

• Exterior walls

• Garages

• Near foundation walls or rim joists

• Under kitchen or bathroom cabinets on exterior walls

• Seasonal or infrequently occupied homes

The Bottom Line

Foam insulation is a good starting point, but it may not be enough in cold or exposed areas. Combining pipe insulation with heat tape offers stronger protection against frozen pipes, water damage, and emergency repairs—especially in colder climates.