Galvanized Pipe Will Test Your “Metal”

Corroded pipes.

Effective Epoxy Pipe Lining

Have you ever seen an image of a pipe lining failure?

They’re rare, but they’re out there. They’re not pretty—and we’re proud to say they weren’t ours.

What makes us so confident?

Because at Rikos, we know that epoxy pipe lining is the most efficient, effective and sustainable way to repair a domestic hot water system—composed of copper piping.

Like the Grand Canyon, which was cut away over the course of time, rushing waters erode copper piping, wearing down their inner walls and creating miniature “canyons” within the pipe. These worn-down channels can lead to leaks if further exposed to turbulent, rushing water. But after exposure to heated, compressed air and a gentle, pneumatic cleaning, eroded copper provides an ideal surface to which our patented epoxy polymer can adhere.

What Is Galvanized Pipe

A rusted pipe profile.

A typical example of corrosion within galvanized steel pipe.

Many buildings constructed in the early-20th century included galvanized piping in domestic hot water systems. This treated steel pipe was cheaper than copper and thought to be more durable than other metals, as galvanization protects steel with a zinc coating.  

Nearly 100 years later, and any domestic hot water system still constructed of galvanized pipe is sure to test your “metal”. Over time, water velocity and increased water treatment wear down the zinc coating, leaving exposed steel to oxidize, erode and corrode —especially near bends and joints.

Just like residents with copper plumbing, those with galvanized steel will be swamped with issues related to pinhole leaks. But it gets worse—the exposed interior of galvanized pipe blisters and becomes impacted with rust that flakes into the potable water.

It doesn’t take an engineer to tell you that it’s a bad choice to drink that discoloured, metallic, slow-flowing water. But take it from us—it’s also a bad choice to apply lining those galvanized steel pipes with epoxy.

Why Epoxy Lining Fails in Galvanized Pipe

A cut-out cross-section of pipe.

An example of erosion corrosion within copper pipe.

Surprised to hear Rikos, the trusted Canadian leader in epoxy pipe lining, telling you to take caution? Don’t be. Since launching in 1999, we’re proud to have rarely had to fulfill a warranty. That’s why we don’t apply epoxy pipe lining to galvanized pipe.


To ensure epoxy pipe lining bonds to the interior pipe wall entirely, we must ensure that pipes are completely free of debris. If the galvanized steel pipe continues to blister during the cleaning process, it will compromise any adhesion to the epoxy lining.

Further, these pipes are vulnerable to damage during the sandblasting or scaling of extremely thin sections of pipe in order to clean and prepare the pipe’s surface. Technicians will ultimately need to cut into walls to replace these sections. Isn’t that why you chose epoxy pipe lining in the first place?

When a domestic hot water system constructed of galvanized steel reaches the end of its life—it needs to be replaced, not lined. Period.

Galvanized Steel and Copper Combinations

Pop quiz: What should you do if your aging domestic hot water system is constructed of copper, but your domestic cold water system is made of galvanized steel?

Answer: Want to avoid enduring the headaches of construction crews tearing into your walls twice in your lifetime? Replace—don’t line—the galvanized pipe cold water system. But choose Rikos epoxy pipe lining for your copper domestic hot water system.

Why? In a domestic cold water system, where water is not constantly recirculating, newly installed copper or PEX piping can be expected to last more than a century. But in the turbulent, recirculating environment of the domestic hot water system, copper pipe often fails prematurely, sometimes in less than a decade. Rikos epoxy pipe lining will breathe new life into your copper domestic hot water system, leaving you with a leak-free solution to last more than 50 years.

Why Rikos?

A pipe lined with blue epoxy lining.

Our patented epoxy lining is expected to last more than double the lifespan of newly installed copper pipe.

Looking to replace a domestic hot water system constructed of copper pipe? Consider a more non-invasive, innovative and effective solution in Rikos epoxy pipe lining. Our patented epoxy lining is expected to last more than double the lifespan of newly installed copper pipe—at almost half the price.

Now recognized as an industry-leader in Ontario, Rikos has offered the most innovative, well-engineered solutions for issues facing domestic high rise buildings since 1999.

Have more questions about pipe lining? Call Rikos today at 416-410-3815 or email us at

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