Pentra®-Sil (IH)

Impregnating hardener for terrazzo, stone and polished concrete

Pentra®-Sil (IH) impregnating hardener is a penetrating Nano-Lithium® Treatment for terrazzo, stone, and polished concrete surfaces formulated specifically for surfaces that will be ground and polished. Pentra®-Sil (IH) is ideal for restoring and polishing worn and damaged surfaces. This environmentally friendly treatment also reduces alkalinity (efflorescence), improves overall abrasion resistance and reduces dusting.

20 L Basket
200 L Drum
600 L Tote
1000 L Tote (IBC)



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Pentra®-Sil (IH) is specifically designed for concrete polishing. Applied during the polishing process, this penetrating hardener improves the final appearance by allowing abrasive tooling to work more effectively. Pentra®-Sil (IH) increases gloss and clarity. It is extremely easy to apply and will not skin, discolor, or leave white blemishes. This lithium-based solution is VOC compliant and easy to apply.

  • Extremely simple application
  • Hardens concrete and terrazzo for polishing
  • Allows abrasive tooling to work more effectively
  • Improves abrasion resistance and reduces dusting
  • Preserves the natural look of the surface
  • VOC compliant, may contribute to LEED points (IEQ credit)

Does Not Form a Skin or Film

Reduces Downtime Between Polishing Steps

Will Not Whiten, Discolor or Stain


Application Method: Sprayer
Color: Opaque, dries clear
Coverage Rate: 7.4-12.3 m² per liter (300-500 ft² per gallon)
Film-Forming: No
Form: Liquid
Freeze Point: 0ºC (32ºF)
Odor: Slight to none
pH: 11-12
Shelf Life: 1 year in unopened, sealed container
Specific Gravity: 1.03
Total Solids: 5.8%
VOC Content: <50g/L