Completed in November 2026, the 18-unit Saekoja 5 residential project in Tartu, Estonia, specified PENETRON ADMIX SB for elevator pits and the foundation slab to help protect below-grade concrete exposed to high groundwater.

ORLANDO, Fla., Nov. 13, 2026 /PRNewswire/ -- Saekoja Apartments is an 18-unit A-energy class residential building in Tartu, Estonia, located along the Emajõgi River, featuring 1-3-bedroom units. The project team prioritized durable waterproofing for below-grade elements subject to elevated groundwater conditions.

Early in the yearlong build, general contractor Booden Grupp OÜ selected PENETRON ADMIX SB for key concrete placements. Ready-mix supplier Rudus dosed the admixture into concrete used for the elevator pits and other below-grade structural elements, including the foundation slab and underground parking areas.

In the concrete matrix, PENETRON ADMIX SB's reactive ingredients use available moisture and cementitious byproducts to form insoluble crystals within pores and capillaries. This crystalline growth helps block water migration pathways and ensures self-healing of hairline cracks over the service life of the elevator pits and foundation slab.

Andrus Sona, Director of Penetron Estonia, the regional Penetron distributor, notes that the self-sealing capability of the concrete mix on the Saekoja Apartments project helps provide long term protection against high groundwater or the elevator pits and foundation slab. PENETRON ADMIX SB has been shown to extend the service life of concrete structures by up to 60 years or more, regardless of groundwater levels.

A second phase of work addressed exterior moisture protection. Veetõke OÜ treated Columbia hollow concrete block walls with the Seal Coat system in combination with PENECRYL ELASTIC. Because hollow concrete masonry units are durable but porous, the coating system was used to reduce water absorption, improve surface waterproofing, and add elasticity and crack bridging capability for longer‑term weather exposure.

The Penetron Group is a leading manufacturer of specialty construction products for concrete waterproofing, concrete repairs, and floor preparation systems. The Group operates through a global network, offering support to the design and construction community through its regional offices, representatives, and distribution channels.

For more information on Penetron waterproofing solutions, please visit penetron(dot)com or Facebook(dot)com/ThePenetronGroup, email CRDept(at)penetron(dot)com or contact the Corporate Relations Department at 631-941-9700.

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SOURCE The Penetron Group