- HEP Plumbing
- Type L Copper

Type L Copper
Type L Copper | Pipe Upgrades | Plumbing | Jamestown
Jamestown homeowners, renovators, and pros alike trust HEP for Type L copper that lasts. Thicker walls fight corrosion, handle higher pressures, and meet every local code—so whether you’re fixing a single pinhole or repiping an entire Victorian, you get rock-solid performance backed by our in-house plumbing experts and massive on-hand inventory. Pop into our store and you’ll find precision-cut lengths, sweat fittings, flux, solder, and every tool you need, all in one stop.
Ready for worry-free pipe upgrades that raise property value and slash future repair bills? Let our team size your runs, cut to spec, and even schedule delivery right to the jobsite, usually the same day in Jamestown. Get the copper that outlasts plastic, keeps water pure, and installs fast—only at HEP.
FAQs
What is Type L copper pipe and why is it recommended for plumbing upgrades?
Type L copper has medium-thick walls (thicker than Type M and thinner than Type K). The added wall thickness gives it a pressure rating of 100–150 psi at 180 °F, making it suitable for domestic water lines, hydronic heating, and underground service. Its strength, corrosion resistance, and 50-plus-year life expectancy make it a smart long-term investment when you upgrade aging galvanized, polybutylene, or CPVC lines in Jamestown homes.
How does Type L copper perform in Jamestown’s climate compared with Type M or PEX?
Jamestown’s winter freeze–thaw cycles, hard-water minerals, and occasional municipal chlorine spikes can shorten the life of lighter Type M copper and some plastics. Type L’s thicker wall better resists pin-hole corrosion caused by minerals and chemical disinfectants. Copper also withstands UV light and high temperatures that can soften PEX. While PEX is flexible and cheaper, Type L copper offers superior longevity, fire resistance, and proven safety for drinking-water taste.
Do I need a permit to replace my piping with Type L copper in Jamestown?
Yes. The City of Jamestown follows the North Carolina State Plumbing Code, which requires a residential plumbing permit for any pipe replacement that goes beyond minor repairs. A licensed plumbing contractor will submit the permit application, schedule rough-in and final inspections, and ensure the new Type L copper system meets code for support spacing, dielectric unions, and pressure testing.
What is the lifespan of Type L copper piping and how do I maintain it?
Properly installed Type L copper typically lasts 50–70 years. Maintenance is minimal: keep water pH between 6.5 and 8.5, avoid mixing copper directly to galvanized steel without a dielectric union, and cushion pipes with plastic hangers to prevent abrasion. Annual water-heater flushes limit corrosive sediment that could reach the copper lines.
How disruptive is a whole-house pipe upgrade and how long will it take?
Most Jamestown single-family homes can be repiped with Type L copper in 3–5 working days. Plumbers map the existing layout, cut wall or ceiling access points, remove old piping, install new Type L lines, pressure-test, and patch drywall. Water is usually off for only 4–8 hours per day, and crews protect floors and furnishings with drop cloths and HEPA vacuums to keep dust down.
What factors affect the cost of a Type L copper plumbing upgrade in Jamestown?
Key cost drivers include: (1) square footage and number of fixtures; (2) accessibility—single-story crawl-space homes are cheaper than multi-story slab foundations; (3) copper market pricing, which fluctuates; (4) code-required upgrades such as new shut-off valves or pressure-reducing valves; (5) drywall or tile repair after the repipe; and (6) permit and inspection fees. On average, Jamestown homeowners spend $5–9 per linear foot for labor and materials, or $8,000–$16,000 for a 2-bath, 1,800 sq ft home.