FL Whole House Repiping Guide
Complete repiping cost estimates - Florida 2024.
Galvanized Steel - The Ticking Clock
Galvanized steel pipes installed before 1980 corrode from the inside out. FL's aggressive water chemistry (high chloramines, acidic pH zones) accelerates internal scale buildup, reducing pressure by 50-80% in 50-year-old homes. Red/brown water is stage 2 failure. At that point, spot repairs don't work - full repiping is the only fix.
Polybutylene - FL's Hidden Risk
Gray poly-B pipe (Quest, Qest, Shell Oil) was installed in ~6 million US homes 1978-1995. FL used it heavily in the building boom. Chlorine in municipal water causes micro-cracking that leads to catastrophic failure with no warning. Many FL insurance companies refuse to cover poly-B homes or charge surcharges. Replacement adds $10K-30K+ to resale value.
PEX - Florida's New Standard
Cross-linked polyethylene (PEX) is now the FL plumber's choice for repiping. Flexible = fewer fittings = fewer failure points. Resistant to FL hard water and chloramines. Lifespan 50+ years. FL Building Code allows PEX throughout. PEX-A (Uponor) or PEX-B (SharkBite) are common choices; PEX-A is recommended for FL hard water zones.
Hard Water Destroys Copper Faster in FL
FL water's high hardness (150-300 mg/L), combined with chloramines added by FL utilities, causes pitting corrosion in copper that can develop pinhole leaks within 10-15 years. This is 2-3x faster than the national average. If you have copper and pinhole leaks appearing, repiping to PEX is more cost-effective than ongoing patch repairs.
Insurance and Sale Implications
Many FL homeowner's insurers refuse coverage or charge premium surcharges for poly-B and galvanized homes. FL real estate agents are required to disclose known plumbing material. A fresh repipe with permit documentation can increase your home's value by 3-8% in FL markets and can make an otherwise-uninsurable home insurable again.
Pipe Material Comparison - FL Homes
| Material | Lifespan FL | FL Rating | Repipe Cost |
|---|---|---|---|
| Galvanized steel | 40-60 yr | Replace | $3,500-$15K |
| Polybutylene | 10-30 yr | Critical | $3,000-$13K |
| Copper | 10-50 yr* | Varies | $4,000-$18K |
| CPVC | 20-40 yr | Monitor | $3,000-$12K |
| PEX (new) | 50+ yr | Best | N/A (new) |
*Copper in high-chloramine zones (most FL metro areas) pits in 10-15 years.
Warning Signs You Need Repiping
| Sign | Likely Cause | Urgency |
|---|---|---|
| Brown/rusty water | Galvanized internal corrosion | High |
| Multiple pinhole leaks | Copper pitting / chloramines | High |
| Gray plastic pipes | Polybutylene - time bomb | Urgent |
| Pressure drop throughout | Galvanized scale buildup | Monitor |
| Leaks under slab | Pipe material + FL soil shift | High |
Emergency Repiping Signs
Active flooding, water intrusion into walls/ceilings, sudden complete pressure loss, visible gray pipe at any fixture (poly-B), insurance non-renewal letter citing pipe material. Emergency repipe costs 25-40% more than scheduled work. Don't wait - a poly-B blowout can cause $50K-$200K in water damage.
FL Code - Permits Required
FL requires permits for all whole-house repiping. Licensed plumber required (FS 489). Permit includes inspection of all new pipe before drywall closes. Keep all documentation for insurance and next sale. Unpermitted repiping is a disclosure requirement and a title issue at closing.
Repiping Project Checklist
A 12-item repiping project checklist is provided (interactive checklist).