SlabArmor™ Closer Spray-on Hardener


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SlabArmor™ Closer dust proofs and hardens concrete in a single application. The low pH qualities provide better hardening characteristics and an attractive, longer lasting finish ideal for warehouses, distribution centers and retail stores. This spray on, leave on material is a fast acting formula allowing for minimal down time.

It is suitable for use on cementitious-based products and can be used in conjunction with diamond polishing and/or decorative color

SlabArmor™ Closer extends material life by closing capilaries within the slab eliminating transmission of water and vapor which leads to mold and bacteria


Features & Benefits

  • Cross-links with SlabArmor™ Starter to a depth of .5 inches (13 mm)
  • Excellent water repellence
  • Enhances and protects stained, integral color and dyed decorative surfaces
  • Superior hardness increases life expectancy of the concrete surface
  • Preserves natural look of concrete
  • Reduces alkalinity/efflorescence
  • Resistant to blushing and does not yellow, chip, peel, or flake with age or exposure
  • Environmentally Responsible

Additional information

Weight N/A

1 gallon bottle, 5 gallon bucket



Spec Sheets

SlabArmor™ Closer Brochure

SlabArmor™ Closer Tech Sheet

SlabArmor™ — Join the Flatwork Revolution