Why Galvanized Pipes Fail
Galvanized pipes are steel coated with zinc to prevent rust. Over decades, the zinc layer wears away and the steel corrodes from the inside. The rust buildup progressively narrows the pipe — a 3/4-inch pipe can be reduced to 1/4-inch effective diameter. This is why older homes experience low water pressure, discolored water, and frequent leaks.
Signs Your Galvanized Pipes Need Replacement
If your home was built before 1960 in Boise's North End, the Bench, or downtown, you likely have galvanized pipes.
- ✓ Low water pressure, especially upstairs or at multiple fixtures
- ✓ Brown or rusty water, particularly after sitting overnight
- ✓ Visible rust or corrosion on exposed pipes in crawl space
- ✓ Frequent leaks at threaded joints
- ✓ Metallic taste in water
- ✓ White mineral deposits on the outside of pipes
Replacement Options
PEX (cross-linked polyethylene) is the standard replacement for galvanized supply lines. It's flexible (follows existing pipe paths through walls), resistant to corrosion and freeze damage, and costs 30-50% less than copper. Copper remains an option for homeowners who prefer metal pipes. For drain lines, galvanized is replaced with PVC or ABS.
Free galvanized pipe assessment — we'll inspect your system and provide repipe options.
Call (208) 555-0199 — Free EstimateWhat to Expect During Repiping
A whole-house repipe takes 2-4 days for a typical Boise home. We work room by room, cutting small access holes in drywall to route new pipes. Water service is maintained to some fixtures throughout the process. We include drywall patching and coordinate full repair. Permits and inspection are included.
Frequently Asked Questions
How do I know if I have galvanized pipes?
Check exposed pipes in your crawl space or basement. Galvanized pipes are silver-gray when new but develop a rough, mottled gray-brown surface over time. Use a magnet — it sticks to galvanized steel but not to copper or PVC.
How much does galvanized repiping cost in Boise?
PEX repiping for a typical North End bungalow (1-2 bathroom): $4,000-$8,000. Larger homes or copper repiping: $8,000-$15,000. The cost depends on home size, access difficulty, and material choice.
Can I replace galvanized pipes one section at a time?
You can, but it's not recommended. Partial replacement creates galvanic corrosion where dissimilar metals connect, accelerating corrosion at the junction points. Whole-house repiping is more cost-effective long-term.
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