Signs Your FL Home Needs a Repipe
Galvanized Steel Pipe (Pre-1960s) — Critical, Replace Now: Corrodes from inside, reducing flow and releasing iron rust. FL humidity accelerates exterior corrosion. Signs: rust-colored water, dramatically low flow (especially upper floors), orange/brown staining, metallic taste. FL galvanized life 40–70 years; any pipe over 50 should be replaced. Red flag for FL insurers — many won't write policies on galvanized homes.
Polybutylene (PB) Pipe — Gray Plastic — Critical, Replace Now (1978–1995): Brand names QuestPEX, PB-200. FL chloraminated water causes PB to oxidize and become brittle; pipe and fittings fail suddenly. Identified by gray color and plastic acetal fittings. No insurance coverage for PB failures; FL insurers routinely non-renew/refuse PB homes. Cox v. Shell Oil class action expired 2009. Not optional — a matter of when, not if.
Recurring Slab Leaks (2+ in 5 Years) — Strongly Recommended: Multiple copper failures under slab mean the whole system is aging. Most FL insurers consider 2+ slab leak claims in 3–5 years a trigger to non-renew. PEX-A repipe through walls (not slab) eliminates future slab penetration risk. Repipe cost typically less than 3 slab repairs combined.
Pinhole Copper Leaks in Walls — Strongly Recommended: Pitting corrosion from FL water chemistry causes pinhole failures in Type L copper that propagate. FL homes 1960–1990 with pinhole leaks should be evaluated system-wide. Partial repairs address symptom; repipe addresses systemic degradation.
Home Sale / Refinancing — Proactive: FL inspectors call out galvanized, PB, or aging copper as material defects. Repipe before listing removes negotiation leverage; lenders (FHA, VA, conventional) can require replacement as a loan condition.
FL Pipe Failure History Timeline
- 1940–1965: Galvanized steel standard. Replacements in 1970s–80s often used copper.
- 1965–1995: Type L copper became FL standard; still in millions of homes. FL water chemistry causes pitting — 35–50 year life before slab leaks begin.
- 1978–1995: Polybutylene (PB) used in many subdivisions; gray flexible pipe; universally recommended for replacement.
- 1987–2010: CPVC (FlowGuard Gold) used as copper alternative, permitted above-slab; still performs well. Known issue: brittle in UV if unprotected.
- 2000–Present: PEX dominant; PEX-A (Uponor, Rehau) current best-in-class: flexible, freeze-resistant, corrosion-immune, 25–50+ year life.
Detailed Material Comparison — FL Conditions
| Property | PEX-A | CPVC | Copper |
|---|---|---|---|
| FL Water Chemistry | Immune | Immune | Susceptible |
| Chloramine Resistance | Excellent | Excellent | Moderate |
| Flexibility / Freeze | Excellent | Moderate | Poor |
| Installation Speed | Fastest | Moderate | Slowest |
| Cost (material only) | Low | Low | High |
| UV Resistance | None* | Limited* | Good |
| Code Status FL | Approved | Approved | Approved |
| Pressure Rating | 160 PSI | 100 PSI | 200 PSI |
| Insurable (FL) | Yes | Yes | Yes |
| Resale Perception | Excellent | Good | Premium |
*PEX-A and CPVC exposed to UV must be protected (UV-resistant covers or paint in garage/exterior/unenclosed areas).
Quick comparison: PEX-A — $$, 50+ yrs, FL fit ⭐⭐⭐⭐⭐, corrosion immune. CPVC — $$, 40+ yrs, ⭐⭐⭐⭐, immune. Copper — $$$, 30–50 yrs, ⭐⭐⭐, corrosion possible.
PEX-A Deep Dive — Why It Dominates FL Repipes
- Manufacturing: Engel (peroxide) crosslinking — highest crosslink density (75%+). 'Shape memory': kinked PEX-A restored with heat gun (not possible with PEX-B/C).
- Expansion Fittings: ProPEX (Uponor) expansion ring — sleeve expands, pipe inserts, sleeve contracts; no solder/crimp/clamp. Full-bore fittings (same ID as pipe) vs. flow-reducing insert fittings.
- FL Climate Benefits: Flexibility navigates joists/cavities with fewer fittings (each fitting is a potential leak point). Thermal expansion absorbed by flexibility.
- Manifold System: Ideal for home-run manifold plumbing — each fixture has dedicated line and individual shutoff. Industry standard in new FL construction.
- Contractor Preference: 80%+ of FL repipe contractors install PEX-A as primary. Faster install (25–30% vs copper) lowers labor cost. Uponor/Rehau offer 25-year warranty.
CPVC Details — Still a Solid FL Choice
- Approved Brands: FlowGuard Gold (Charlotte Pipe) and BlazeMaster. FlowGuard Gold engineered for hot/cold potable. Use solvent cement rated for CPVC (not standard PVC cement).
- Cautions in FL: More rigid than PEX (more fittings, more labor). Exposure to certain chemicals (insecticides, cleaning products, fire suppressant foams) can craze/crack CPVC. Use compatible (PVC/CPVC) hangers, not metal.
- Long-Term Record: 50+ year track record; original 1975 installations still in service.
What's Included in a FL Repipe
- Permit Pulling: FL-licensed contractor pulls plumbing permit. Cost $150–$400. Some counties (Hillsborough, Orange, Miami-Dade) require rough-in inspection before walls close.
- Wall/Ceiling Access Cuts: Drywall cuts to access routing (typically attic for single-story or interior walls). 20–40 access cuts. Patching included; painting typically homeowner's responsibility.
- Old Pipe Removal & New Installation: Old pipe abandoned or removed. New supply lines to all fixtures, WH connection replaced. ~1 day for most homes under 3,000 sq ft.
- Manifold & Shutoff Installation: Main shutoff replaced; water hammer arrestors at washer; PRV installed/replaced if needed; central manifold for home-run PEX; fixture shutoffs replaced where accessible.
- Pressure Test & Inspection: Tested to 150 PSI for 2 hours before drywall closure; FL inspector verifies; water restored same day; post-inspection drywall patching by contractor.