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

Type M has a thinner wall and is the standard for residential water supply. Type L has a thicker wall and is required for underground installations, commercial buildings, and some local codes.

Is copper pipe better than PEX?

Copper is more durable, universally code-accepted, and recyclable. PEX is more affordable, easier to install, and freeze-resistant. Both are excellent choices for residential water supply.

Copper PipeGenerating image…

Plumbing

Pipe

$3-$20 per 10-foot stick

Copper Pipe (2026)

Prepared by Lumberama's Building Materials Team

|Last updated May 15, 2026|Sources & methodology

Copper pipe has been the gold standard for residential water supply for decades, known for its durability, reliability, and universal code acceptance. Available in Type M (thinner wall, residential standard) and Type L (thicker wall, commercial and underground). Copper naturally resists bacteria growth and provides decades of trouble-free service.

Key Features

Universal code acceptance
Natural antimicrobial properties
Type M and Type L wall thicknesses
Sweat-solder or press-fit connections
Fully recyclable material

Specifications

Diameters: 1/2

3/4

1-1/2 inches | Lengths: 10-foot sticks | Types: M (0.028 wall)

L (0.040 wall) | Temperature Rating: Up to 400F | Pressure Rating: 100+ PSI

Applications

Hot water supply
Cold water supply
Water service entrance
Refrigerant lines
Gas lines (Type L or K)

Installation Overview

Cut with a copper tubing cutter. Ream and clean the cut end. Apply flux to both surfaces. Assemble the joint and heat with a torch until solder flows into the joint by capillary action. Alternatively, use press-fit fittings.

Pros & Cons

Pros

✓ Most universally accepted by code
✓ Extremely durable and long-lasting
✓ Naturally antimicrobial
✓ Fully recyclable

Cons

✗ More expensive than PEX or CPVC
✗ Requires soldering skill
✗ Can corrode in acidic water
✗ Susceptible to freezing and bursting

Top Brands

Charlotte Pipe

Code Requirements

Must meet ASTM B88. Type M is standard for residential supply. Type L required for underground and some commercial applications. Lead-free solder required for potable water systems.

Buying Tips

Type M is sufficient for most residential projects and costs less than Type L. Learn to solder or invest in press-fit fittings for faster installation. Buy extra fittings as soldering takes practice.