Uponor

For residential plumbers, there have been two schools of thought for plumbing a house: home run and trunk and branch. Both have their positives and negatives, depending on what you’re trying to accomplish with the plumbing system.

However, you may not know there’s a new (and smarter) way to design and install a residential plumbing system that installs faster, uses less materials, requires fewer connections, minimizes your liability and operates more efficiently.

It’s called Logic plumbing.

A Logic plumbing design can only be used with PEX piping, but since PEX is now used in more new-home construction than copper and CPVC combined, you’re most likely already using it. (And if you’re not, you need to check it out. PEX is highly durable, flexible and more cost-effective compared to copper and CPVC.)

The Logic approach leverages the flexibility of PEX pipe to minimize connections and reduce potential leak points while also incorporating multiport tees located near fixture groupings to both limit the amount of pipe and connections needed while also improving installation efficiencies and system performance.

What’s a multiport tee?

I’m sure right now you’re wondering, “What’s a multiport tee?” It’s essentially a bunch of tees all molded together to create one long tee with multiple outlets. This innovative product minimizes connections and is the heart and soul of a Logic design.

For example, six regular tees will have 18 connections, but a flow-through multiport tee with six outlets will only have eight connections (six connections for the ports, a main flow-through inlet and a main flow-through outlet). Think about how much faster you could install a system when you’re making half the number of connections.

And get this — while multiport tees may resemble a manifold, they have the benefit of being hidden behind walls without the need for an access panel. Yes, you heard that right. No need for an access panel, minimizing costs and labor to help keep your projects on schedule and on budget.

Multiport tees are made of engineered polymer (EP), a thermoplastic material that has been used in plumbing applications for more than 20 years. EP has superior mechanical, chemical and thermal properties that provide dimensional stability in demanding applications, including areas of high stress, heat and moisture.

And, like PEX, the EP material in multiport tees resists corrosion, pitting and scaling, so it creates a highly durable system that’s engineered to last. Best of all, multiport tees (as well as all EP fittings) are approved for direct burial in the soil or concrete slab, so they are ideal for in-slab plumbing applications.

The Logic layout

So what exactly is a Logic plumbing layout? It’s quite simple: a main line connects to a multiport tee with distribution lines going out from the tee. These individual lines extending from the single multiport tee provide water to all fixtures in a single or adjacent grouping.

This design uses significantly less pipe than a home-run layout, with just a few more connections. Plus, it requires considerably fewer connections compared to a trunk-and-branch installation.

For example, a 2,300-square-foot, two-story home using a Logic design requires only 637 feet of pipe while a home-run system uses 1,515 feet of pipe. That’s more than twice the amount of piping necessary.

In addition to the added costs required to install all that extra pipe, the system performance is also greatly reduced due to added pressure loss and longer wait times for hot water. Plus, all the extra pipe can lead to issues isolating hot and cold water lines. This increases heat transfer and energy inefficiencies within the plumbing system.

And, while it’s true a Logic installation uses slightly more connections than a home-run layout (59 vs. 48 in the 2,300-square-foot, two-story home example above), the amount of pipe savings is significantly more beneficial with the labor and material savings you get with less pipe to install (not to mention the efficiency of the system).

A Logic layout also installs much faster compared to a trunk-and-branch system due to the vast reduction in connections. With the two-story home example above, a Logic layout uses a mere 16 fittings and 59 connections compared to a whopping 96 fittings and 165 connections for trunk and branch. That’s six times the number of fittings and nearly three times the amount of connections!

All those added connections greatly increase your liability with more potential for leaks, plus it also limits the performance of the system with increased pressure loss.

So there you have it! Just a few “logical” reasons why you should consider a smarter approach to plumbing a home that will improve your installation times, limit your liability and offer an all-around better-performing system for the end user.

Kim Bliss is the content development manager at Uponor. She can be reached at kim.bliss@uponor.com.

John Reutter has been named the new vice president of Finance for Uponor North America. He will lead all of the company’s finance-related teams, including Accounting, Finance, Risk Management and Legal.

Bill Gray, president of Uponor North America says, “John’s experience working in the water and energy industries, assisting with integrations, incorporating financial metrics into strategic goals, and guiding the financial aspects of multimillion-dollar projects were key factors in his selection. We’re excited to have John as part of our senior leadership team. I’m confident he will play an important role in the continued growth of our organization throughout North America.”

Sometimes its fun to step back and see the whole process from start to finish. Here’s a time lapse video of the prep and install for the radiant in-floor heating at the #duluthbuild project in Northern Minnesota.

I’ve been trying to document each step along the way for this project we are building for my little sister and brother-in-law and I’m starting with the over 7K sq ft of radiant. If you’d like to follow along you can search the hashtag #duluthbuild on either Facebook or Instagram, doing so will show you all the posts from the project.

If social media isn’t your thing or you’d just rather stay put here on The Hub check out these recent videos:

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Installers find design and installation benefits from PEX plumbing system for micro apartments project

The Interurban Lofts in Shoreline, Wash., just outside of Seattle, are part of a new housing trend for millennials looking for a hybrid approach to home life. These “apodments,” as they’re called, feature a unique setup of eight studio units per “pod” with a full bathroom in each unit and a shared kitchen. Each unit is partially furnished with a bed, microwave and mini-fridge.

The community atmosphere targets university students, recent graduates, young professionals and even seniors with the purpose of giving individuals more affordable housing and the opportunity to spend money on experiences, not spaces.  

When planning the design for the six-story, 22,000-square-foot, 80-unit complex, the developers wanted a plumbing system that was efficient, durable and long-lasting, so they chose to go with PEX. Uponor’s design engineers and the Interurban Lofts project engineers worked in tandem to create an efficient system utilizing the flexible PEX piping along with ProPEX® expansion connections and multiport tees throughout.

The project used more than 10,000 ft. of Uponor AquaPEX® tubing to plumb the entire structure. For a few of the installers, it was their first time working with Uponor PEX. Thankfully, onsite training from the manufacturer gave them a short-lived learning curve.

“Once you’ve tried making a fitting two times, you’ve got it. It just becomes common sense,” said Roman Hudson, foreman at Wolfe Plumbing. “The Milwaukee M18™ FORCELOGIC™ ProPEX expansion tool operates the same as the smaller tool — just pull the trigger and let it go.”

The team appreciated the faster, easier installation with the Uponor PEX system, which included a lighter-weight solution compared to copper and other metallic piping.

“PEX is more forgiving and it’s lighter than copper,” said Hudson. “We used to use CPVC, stainless and copper pipes, but ProPEX fittings, man, it’s quick and fast. Once you started figuring it out, PEX is faster.”

The benefits didn’t stop there. With the design expertise from a manufacturer that’s been in the PEX industry for more than four decades, the project also reaped additional advantages beyond the installation.

“The cool thing about Uponor Design Services is, because it’s their product, they’ll push the engineering to the max,” said Bert Shepardson, commercial plumbing project manager at

Wolfe Plumbing. “That’s what allows us to use smaller pipe sizes and have more favorable installs.”