Less than two weeks after the Lincoln Memorial Reflecting Pool reopened following a $14.7 million rehabilitation project, blue material began peeling from the bottom of the basin.
Photographs published by Reuters, Getty Images, USA Today, The New York Times, CNN, and other news organizations show large flexible sections of material lifting from the floor of the newly renovated pool while workers simultaneously battled a highly publicized algae bloom.
For many news outlets, the story quickly became another chapter in the ongoing political controversy surrounding the project. Headlines described “peeling paint,” “falling-apart liner,” and “failed renovations.”
For pool and spa professionals, however, the most important question remains unanswered: What actually failed? That question is surprisingly difficult to answer because the Lincoln Memorial Reflecting Pool was never simply painted.
As of June 24, neither the National Park Service, Atlantic Industrial Coatings, nor Rhino Linings had publicly released a root-cause analysis explaining why portions of the newly installed system had detached.
More Than Paint
https://www.youtube.com/watch?v=51bKmCWKVY0 As Service Industry News previously reported, the Reflecting Pool received a multi-layer waterproofing system built around Rhino products, including Rhino 406 epoxy primer, Rhino CCW polyurea, Rhino 11-35 polyurea, and Rhino Pipeliner 5000.
According to National Park Service procurement documents, the project called for concrete surface repairs, crack and joint rehabilitation, application of an epoxy primer, and installation of a Rhino Pipeliner 5000 polyurea waterproofing system at a final thickness of approximately 100 mils. The specification also required shot blasting the pool floor to an ICRI CSP 3-5 profile, along with adhesion testing, thickness verification, and spark (holiday) testing.
Project documents indicate the system consisted of multiple epoxy and polyurea layers. Publicly available records do not clearly establish which specific layer or combination of layers is visible in the detached material shown in photographs.
Adhesion loss and delamination were recognized risks for the coating system selected for the project: Project specifications emphasized surface preparation, adhesion performance, and quality-control testing — issues that have become central to questions about the current failure.
The Photos Raise Questions
Multiple news organizations captured what appears to be large flexible sections of material lifting from the basin floor while remaining largely intact. One USA Today caption described a detached section of “newly installed liner” measuring approximately three feet by three feet that remained attached along one edge while floating in the water.
Former Olympic canoeist David Hearn, who was later arrested by U.S. Park Police after touching the material, described it as a “rubbery flap.”
The detached material appears flexible and largely intact rather than brittle or degraded, leading many observers to describe the condition as delamination.
On June 23, the New York Times reported that the contractor's initial sealant and foam solutions reportedly failed two structural joint tests during the project. The same reporting cited internal National Park Service records showing that workers documented holes, cracks, cuts, and peeling caulk on June 9, only days after the pool was refilled. By June 16, according to the records described by the Times, workers were reporting blue sealant peeling and floating in the water.
Those reports do not establish the cause of the visible failure, but they suggest that concerns about the condition of the installation emerged before the peeling became a national news story.
The Vandalism Explanation
The story became even more complicated after President Trump publicly blamed vandalism for the damage.
The President initially alleged that individuals had introduced chemicals into the pool. On June 20, in a post on Truth Social, he asserted that vandals had “took some form of knife or blade” and put a “250-foot-long gash” into the newly installed lining. Two days later, he expanded on that allegation during remarks to reporters, saying, “They went in there with the knife” and asking, “Who would think that somebody would go into a pool and take a knife and start cutting it?”
Multiple arrests and citations have been reported in connection with incidents at the Reflecting Pool.
Internal records described by The New York Times reportedly referenced what investigators characterized as razor-blade slashes and two 171-foot cuts. However, the same reporting did not establish a direct connection between those cuts and the peeling blue sealant later observed in the basin.
As of press time, no publicly available engineering report, forensic analysis, or manufacturer evaluation has linked the observed delamination to vandalism. Likewise, no publicly released evidence has demonstrated that chemicals allegedly introduced into the pool caused the coating system to separate from the substrate.
The technical connection between the reported acts of vandalism and the visible membrane separation has not yet been established publicly.
What Coating Professionals Are Asking
Coating professionals typically begin by examining surface preparation, moisture conditions, application procedures, adhesion performance, and potential mechanical damage.
According to coating manufacturers, technical guidance documents, and industry literature, common causes of delamination in high-build coating systems include inadequate surface preparation, contamination, moisture within the substrate, adhesion failures between coating layers, and water intrusion beneath the coating system.
One of the most prominent technical voices commenting publicly on the project has been aquatic infrastructure consultant Tim Auerhahn, who has worked extensively with large commercial aquatic facilities and water-feature projects.
Auerhahn has cautioned against drawing conclusions from photographs alone, noting that apparent delamination can result from numerous causes and that the critical question is whether the problem is isolated or widespread.
In a June 23 article, Scientific American reached a similar conclusion after consulting coating and materials experts. Rather than focusing on algae or hydrogen peroxide treatments, those experts pointed toward issues such as surface preparation, application procedures, adhesion performance, and installation quality as the areas most likely to warrant investigation.
According to E& E News, Atlantic Industrial Coatings owner Eddie Wood said on June 22 that the Reflecting Pool remains “100% leak proof” despite the visible coating failure and that repairs are expected to take weeks.
The primary purpose of the rehabilitation project was not simply to change the appearance of the basin.
It was to reduce chronic leakage from one of the nation's most famous water features.
Publicly available inspection reports, adhesion test results, ASTM D4541 pull-off testing records, manufacturer evaluations, and forensic analyses that might explain the failure have proven difficult to locate. Some of those records may exist within contractor, manufacturer, or National Park Service files, but they have not been publicly released.
The project specifications called for adhesion testing, and delamination was identified as a potential failure mode. Portions of the installed system later detached.
Until inspection findings are released, any explanation remains speculative. What can be said with confidence is that portions of a newly installed coating system have detached from the bottom of the Reflecting Pool, and no public evidence has yet established why.
