What is the difference between Type L and Type M copper?

Type L copper (marked with blue print) has significantly thicker walls than builder-grade Type M (marked with red print), offering greater burst strength and longer life under high municipal water pressure.

When is copper piping required over PEX in Denver?

Copper is often required for exposed mechanical connections within 18 inches of a water heater, boiler risers, outdoor high-UV exposure runs, and specific commercial or multifamily building codes.

Type L Rigid Copper Piping Systems

Thick-walled, commercial-grade copper plumbing installed with precision Master Plumber solder work.

For homeowners and commercial properties requiring rigid metal plumbing, we install premium Type L copper for maximum strength, UV resistance, and code compliance.

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Why Choose Type L Copper

Heavy-Duty Wall Thickness

We exclusively install Type L copper (blue stamp), which is 50% thicker than builder-grade Type M (red stamp) for maximum pressure tolerance.

Master Plumber Soldering

Clean, deburred pipe ends and precision lead-free soldering prevent interior turbulence and turbulent wear at joints.

100% Recyclable & Fireproof

Copper is an all-natural, biostatic material that will not melt or release toxic fumes in the event of a structural fire.

When is Copper Preferred in Colorado?

1. Water Heater & Boiler Transitions

Colorado plumbing codes require metallic piping within the first 18 inches of gas-fired water heaters and boilers to safely handle high thermal exhaust temperatures.

2. Outdoor & UV-Exposed Piping

PEX piping degrades under direct sunlight. For exterior hose bibbs, above-ground commercial risers, and rooftop lines, Type L rigid copper provides lifelong UV and physical impact resistance.

Is Your Copper Developing Pinhole Leaks?

If your current copper piping is experiencing pitting or recurring pinholes, read our Copper Pinhole Leaks Diagnostic Guide to see if a PEX-A conversion is recommended.

Consult with Denver's Repipe Master Plumber

Let Master Plumber Bill Clark determine whether Uponor PEX-A or Type L Copper is the best fit for your property.

Call (303) 472-0833 For a Free Consultation