Exclusive: Firm that worked on past Reflecting Pool renovation passed on Trump project after deeming it 'unfeasible'

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11. The OP has a great deal more on why this project failed

Here is more from the OP

Sika declined the proposal after a routine assessment of feasibility and risk, the employees said. One of the Sika specialists assumed that was because Sika’s solution was complicated and lengthy, not fitting the contractor’s tight timeline of just a few months turnaround.

The main issue, one of Sika employees said, was the lining over the expansion joints featured in the Reflecting Pool and constraints on what material could be used and submerged in water. The Reflecting Pool features 2.5 miles of joints, which were recently replaced as part of the renovations, according to Department of Interior Secretary Doug Burgum......

The two Rhino Linings products ultimately used in the Reflecting Pool were Rhino 406 Primer and Pipeliner 5000, according to an advertisement for the company. The primer is made up of epoxy, and the pipeliner is made of a mixture of resin and isocyanate – polyurea.

The Pipeliner 5000 product is typically used for linings in water storage, wastewater facilities, and pipes – containers not exposed to sunlight on a regular basis. Some polyureas are not stable under UV light .

As for the Rhino 406 Primer, one Sika employee said that epoxy, which is a popular coating for garage floors, is rigid, and would not be a good solution for flexing joints like the ones in the Reflecting Pool.