Choosing a full re-pipe for an aging commercial structure over a repair can be daunting. Here are a few cases where using PEX made it easier.


As buildings continue to age, and renovations continue to expand, it is becoming apparent to many in the commercial building world that PEX is a good material of choice for re-pipes. Not only is it a durable, reliable and high-performing product, but also it is highly flexible — making it extremely viable in tight, constrained spaces that are typical in re-piping projects.

Here are three examples of large commercial renovations that were aided by the use of PEX.

Fast Install Minimizes Inconvenience for Apartment Residents
The Arts at Broussard Crossing is a 184-unit apartment complex in Lafayette, Louisiana. The building’s plumbing system had suffered from leaky pipes and mold issues for a while when the owners decided to replace the outdated polybutylene piping with PEX.

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For the extensive re-pipe project, which required the installation to take place while the building was occupied, the building owners hired SageWater, a Virginia-based company specializing in pipe replacements. The company had installed more than 30 million feet of new pipe in more than 80,000 apartments and condominiums over the past few decades.

The original pipes were run through the first-floor slab of the two-story building, but the replacement pipes were installed through the first-floor ceiling.

“It’s common to use a different path than the existing pipe runs to avoid obstacles such as electrical, joist and concrete barriers,” says Chris Nelson, senior project manager for SageWater. 

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The installers were able to run 300-foot coils of PEX in continuous lengths with no fittings, ensuring faster installation times while also reducing the opportunity for mistakes.

“It’s a balancing act to work around tenants’ essential comforts and the need to install the new pipe [cutting into ceilings and drywall for access], and then to repair and paint after the work is completed,” says Nelson. “But we do a lot of re-pipe jobs, so we are comfortable balancing all the elements involved, so the job is done quickly, correctly, on time and within budget.”

Converting Historic Building to Modern Hotel Has Added Challenges
The Aloft Tulsa Downtown Hotel in Tulsa, Oklahoma, involved not just a re-piping, but also a total renovation. And here’s the catch: The project came with an historical preservation status as the hotel was being built out of the former city hall, originally constructed in 1969, which meant added restrictions and requirements.

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The developer, Brickhugger LLC, wanted to keep the original marble walls and terrazzo floors, mixing them with Aloft’s signature light fixtures and ceiling designs. The structure needed a complete overhaul, including a new plumbing and hydronic piping system.

“In a redesign job, there is usually limited workspace, and this job was no exception,” says Todd Ringgold, project manager at that time for Palmer Mechanical, the company hired to do the plumbing and hydronic piping installation. (Ringgold now owns Ringgold Plumbing in Broken Arrow, Oklahoma.)  “We worked with a very tight ceiling space. The hallways were dropped only 2 feet, and we needed to accommodate fire sprinklers, fresh air, sanitary sewer, exhaust air, heating, cooling, domestic hot and cold water, and lighting.”

Palmer Mechanical had been involved with other historical renovations in Tulsa, such as the venerable Mayo Hotel. As a result, says Ringgold, local engineers have built a high level of trust in Palmer’s recommendations.

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“When we work directly with developers in our own design-builds, we almost exclusively specify PEX because of the savings we are able to bring to the projects,” he says. “PEX allows us to run our lines in such a way that we can avoid conflicts with other trades and keep up with our deadlines without interrupting other installers and without compromising the integrity and quality of our installation.”

According to Ringgold, PEX offers significant labor savings due to the speed of installation with the flexible piping. With rigid CPVC, the installer has to glue and wait for the joints to set up. There is also excess material waste with CPVC because the installer has to be careful not to mix up adapters. And with copper, there is always the concern about construction site thefts, increasing costs and installation times.

PEX Significantly Reduces Fitting Installation for College Dorm Re-Pipe
Aging educational facilities are also seeing benefits with PEX for re-piping. For the George Fox University dormitory renovation in Newberg, Oregon, school officials decided to prioritize energy savings by adding new piping to their outdated radiators. Hydro-Temp Mechanical of Wilsonville, Oregon, was the contracting firm chosen for the project, and the company worked closely with Uponor’s area sales agent, Hollabaugh Brothers and Associates (Portland), to provide the best solutions to the challenging project.

“We have a longstanding relationship with Hydro-Temp that allowed us to discuss product performance and installation parameters,” says Casey Hollabaugh, vice president of Hollabaugh Brothers and Associates. “We brainstormed several possible solutions, but because of the complexity of the remodel, PEX piping became the only viable long-term solution.”

Specifically, the pre-existing construction (mostly concrete walls) made other alternatives like copper cost-prohibitive because excessive demolition would have been required to install the rigid pipe. Because PEX piping is flexible, installers could easily insert the piping through hole penetrations in the existing framing, eliminating the need for unnecessary teardown.

“Our goal was to reuse the old galvanized piping penetrations, but with window upgrades and other architectural considerations, the old routing didn’t line up exactly in a straight line with the layout of the rooms,” says Daniel Jeffrey, project manager with Hydro-Temp. “But the flexibility of PEX allowed us to adjust to the existing wall penetrations.” 

Jeffrey estimates that if the crew had used rigid pipe, they would have had to offset each wall penetration (over 100 pairs) with eight 90-degree fittings.

“That would have been around 800 more fittings to install,” he says.

To learn more about PEX, visit www.plasticpipe.org or www.ppfahome.org.

About the Author
Kim Bliss is the senior writer for technical communications at Uponor. She can be reached at kim.bliss@uponor.com.


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