A consultant warned there was evidence of “major structural damage” below the pool deck of a Miami Beach-area condo building nearly three years before it collapsed.

As officials continue to investigate what caused the deadly collapse at Champlain Towers South, officials in the Florida city’s Surfside suburb late Friday released a trove of documents related to the building, including the consultant's October 2018 report.

The findings from consultant engineer Frank Morabito also showed there was “abundant cracking” and crumbling in the underground parking garage of the 12-story building, which suddenly collapsed as residents slept in the early hours of Thursday morning.

Morabito said the waterproofing below the pool deck and entrance drive was failing, “causing major structural damage to the concrete structural slab below these areas.”

“Failure to replace the waterproofing in the near future will cause the extent of the concrete deterioration to expand exponentially,” he said.