Enter your email address for weekly access to top multifamily blogs!

SageWater Insights

Innovations From the Leaders In Pipe Replacement

The Problem With Epoxy

The Problem With Epoxy

Epoxy pipe lining is often viewed as an alternative to replacing the old piping with a completely new system.  In theory, the lining process involves coating the inside of the pipes with an epoxy resin to seal off pinholes and corrosion, creating a lasting solution to solving your pipe problems.  That’s the theory. In practice, the challenges with epoxy are numerous:

  • For one, there is no way to know how well the epoxy adhered to the inside of the pipe, and if an even coat was achieved, without cutting into the pipe.
  • Second, if a leak occurs at a future date, repairing an epoxy-lined pipe is very difficult. The resin cannot take heat, and application of a torch to try and solder in a new piece of pipe or a fitting ruins the integrity of the lining at that location.
  • Likewise, use of a “press-fit” connection (the solution by many epoxy companies for epoxy-lined pipe repairs) may crack the epoxy lining at the point of the repair, allowing water to get between the pipe and the lining, further corroding the pipe.
  • The initial epoxy lining process itself creates a certain amount of pressure on the pipe walls, and may blow out at weak spots or threaded areas.
  • And lastly, critical elements of the piping system are often excluded in an epoxy lining job.

Because of these challenges, SageWater encounters failed epoxy lining jobs, or partially completed epoxy lining jobs, that now require a full pipe replacement.  These, as well as other epoxy problems have resulted in numerous ongoing lawsuits across the epoxy lining industry.

Given that a full pipe replacement is typically the same cost, and sometimes even less expensive than an epoxy lining solution, SageWater highly recommends requesting a repipe bid at the same time that you receive an epoxy bid.  Likewise, because epoxy lining frequently does not include a warranty, you will find that the piece of mind that comes with a brand new, fully warranted piping system is well worth the investment.

The above example was taken from a property that was unsuccessfully lined with epoxy just two years ago. As you can see, the lining did not adhere evenly to the inside of the pipe, resulting in settling of the resin at the bottom of the pipe. Likewise, you can see the de-lamination that is occurring on the pipe walls, which may be the result of improper cleaning prior to the installation or an improper installation of the resin itself.  Regardless of the cause, the epoxy did not adhere as intended, and corrosion is coming through the lining, causing the installation to fail.

For more pipe replacement insights, visit us online at www.sagewater.com, call us at (888) 584-9990, or email me directly at This email address is being protected from spambots. You need JavaScript enabled to view it..  

Rate this blog entry:

Comment Below

  1. Posting comment as a guest. Sign up or login to your account.
Attachments (0 / 3)
Share Your Location
It appears as though allegedly defective plumbing products have hit the market again. On October 26th, 2018, the NIBCO PEX Settlement Administrator and Plaintiffs’ law firms announced a class action settlement involving allegedly defective PEX tubing, fittings, and clamps. Per the settlement website: “You may be entitled to benefits from a class action settlement if: (a) you have owned or occupied at any time since January 1, 2005, a residential or commercial structure in the United States that ...
Throughout the last decade, the housing industry has been flooded with high-profile Chinese-manufactured product failures prompting a worrisome construction defect epidemic. The multifamily industry has already been exposed to these troubling products, that often produce negative health effects to residents and damage to buildings, in addition to the reluctance of insurance companies to cover or remediate costs associated with replacing the defective product. The following examples show a histor...
Copper Corrosion…It’s The Pits. Copper piping has been used in domestic water supply systems for nearly 100 years.  Originally, copper piping was projected to last 20-25 years, but with changes in water chemistry and other environmental factors, the rate of corrosion has accelerated, and the longevity of copper pipes has become a valid concern.   The Causes Many theories and a lot of research exist regarding the primary cause of copper pipe corrosion and it can be difficult to iden...