Commercial plumbing isn’t a place to guess. When pipes need to go, the material you replace them with determines how long you go before you’re dealing with this again. Whether it’s a full repiping project or sewer repair in Glen Ellyn, IL, the right call starts with knowing what your options actually are.
Copper: Durable, But at a Price
Copper has been the industry standard for decades, and for good reason. It’s highly durable, resistant to bacteria growth, and can last 50 or more years according to the American Society of Home Inspectors. However, copper comes with significant upfront material costs and requires skilled labor to install. It’s also vulnerable to corrosion in acidic water conditions and is more susceptible to freeze damage.
PEX: The Flexible Front-Runner
Cross-linked polyethylene (PEX) tubing has grown in popularity across commercial applications because of its flexibility, freeze resistance, and lower installation cost. According to the Plastic Pipe and Fittings Association, PEX can handle both hot and cold water supply lines effectively and resists scale and chlorine better than metal alternatives. It’s also faster to install, which reduces labor time on large-scale repiping jobs. The trade-off: PEX cannot be used outdoors or in direct sunlight, and some municipalities have specific code restrictions.
CPVC: The Middle Ground
Chlorinated polyvinyl chloride (CPVC) sits between copper and PEX. It handles higher water temperatures than standard PVC, is more affordable than copper, and has been used reliably in commercial settings since the 1960s. One downside is brittleness over time, particularly in colder environments, and it requires solvent cementing rather than simple mechanical fittings.
Comparing the Three at a Glance
Each material brings different strengths to the table:
- Lifespan: Copper (50+ years), CPVC (50+ years), PEX (25-40 years)
- Cost: PEX is lowest, CPVC is mid-range, copper is highest
- Installation speed: PEX is fastest, followed by CPVC, then copper
- Best use cases: PEX for retrofits and large runs; copper for high-visibility or code-specific areas; CPVC for hot water distribution
When to Replace Sewer Line and Piping Together
When you’re already opening walls or accessing your building’s plumbing infrastructure, it’s worth assessing whether you need to replace sewer line components at the same time. Aging cast iron or clay sewer lines can deteriorate alongside supply lines, and bundling the work reduces disruption and total labor time significantly.
FAQ
Can I mix pipe materials in one building?
Yes, in many cases, but transitions between materials require the correct fittings and must comply with local codes.
Does pipe material affect water quality?
Copper can leach trace amounts of copper into water over time. PEX is generally considered safe but should be NSF-certified.
Will my building need to shut down during repiping?
Not necessarily. A phased approach can keep portions of the building operational throughout the process.
Get the Right Pipes. Get the Right Team.
At Keeley’s Plumbing, we’re a locally owned and operated company that handles both residential and commercial work, and we back every job with warrantied services and a satisfaction guarantee. Our plumbing professionals are available 24/7, and when you call, you’ll speak with someone who actually knows plumbing. We offer upfront flat rate pricing with discounts available, so there are no surprises on your invoice. If your commercial property is due for an assessment, give us a call.