PENETRON ADMIX Protects Concrete at Olde Naples Hotel

Crystalline waterproofing admixture specified for below-grade concrete structures at new boutique hotel in Florida

Mar. 24, 2026 at 8:25am

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The March 2026 opening of the Olde Naples Hotel in Naples, Florida brings back a bit of 19th century Naples with its evocative architecture and open public spaces. PENETRON ADMIX SB, a crystalline waterproofing admixture, was specified to protect the below-grade concrete foundation structures, retaining walls, and elevator pits from the marine environment.

Why it matters

Naples is a seaside town in Florida known for its pristine beaches, high-end shopping and dining, and proximity to the Everglades. Building in a marine environment poses challenges, including exposure to seawater and chloride ions that can lead to concrete deterioration and corrosion. PENETRON ADMIX SB was chosen to extend the service life of the Olde Naples Hotel's concrete structures.

The details

PENETRON ADMIX SB, a crystalline waterproofing admixture delivered in soluble bags, was specified by CEMEX, the ready-mix concrete supplier, to protect the hotel's below-grade concrete foundation structures, retaining walls, and elevator pits. Once added to the concrete mix, PENETRON ADMIX SB can extend the service life of concrete structures by 60 or more years, even in Florida's marine climate.

  • The Olde Naples Hotel opened in March 2026.

The players

PENETRON ADMIX SB

A crystalline waterproofing admixture delivered in soluble bags, specified to protect the Olde Naples Hotel's below-grade concrete structures.

CEMEX

The ready-mix concrete supplier that specified PENETRON ADMIX SB for the Olde Naples Hotel project.

Dale Williams

The General Sales Manager for Penetron USA.

Hart Howerton

The New York and San Francisco based architects who designed the Olde Naples Hotel to recall the charm of Naples' historic downtown.

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What they’re saying

“The construction site of the Olde Naples Hotel is located a mere two-blocks from the beaches (and saltwater) of the Gulf coast. With that location comes the challenges of building in a marine environment – and on high groundwater levels.”

— Dale Williams, General Sales Manager, Penetron USA

“Once added to the mix, PENETRON ADMIX SB can extend the service life of concrete structures by 60 or more years, even in Florida's marine climate with its constant exposure to seawater and chloride ions, both potential sources of corrosion and concrete deterioration.”

— Dale Williams, General Sales Manager, Penetron USA

The takeaway

By using PENETRON ADMIX SB, the Olde Naples Hotel's concrete structures will be protected from the corrosive marine environment, extending the lifespan of the building and ensuring its long-term durability in the seaside town of Naples, Florida.