WA Po - Reflecting Pool peeling probably caused by application flaws, experts say

The lining of the Lincoln Memorial Reflecting Pool peeled away in at least seven places along seams that were created when the material was applied in large rectangular sections, indicating likely problems in how it was installed, according to a Washington Post analysis of visuals and interviews with experts.

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Post reporters visited the Reflecting Pool on June 25 and identified seven locations where the lining — a waterproof membrane that was painted onto the concrete basin — had partially or entirely peeled away. The peeling occurred in irregularly shaped patches that stretched alongside the long edges of the pool. The pieces ranged in size from a few inches to as long as six feet. In one case, the concrete was visible underneath. (Reporters could not see the condition of the lining in the middle of the basin.)

By comparing the seven locations with satellite imagery, photos and videos taken during the renovation process, the analysis found that all of the failures occurred at the seams — lines between two areas that were painted at different times.

Four experts in waterproofing materials — who have decades of experience and have served as educators and expert witnesses in pool-related construction lawsuits — reviewed The Post’s findings and said the failure pattern strongly suggested errors in the application process. They said that while a precise cause cannot be determined without on-site examination and lab testing, such seams require careful attention and are especially prone to failure.

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