Pentra®-Sil (NL)

Hardener, Densifier

Pentra®-Sil (NL) is a premium lithium high performance densifier for concrete surfaces.
This high solids formula provides maximum hardening to improve abrasion resistance and reduce dusting.

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



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Pentra®-Sil (NL) is a high-performance lithium densifier that provides optimal hardening to improve abrasion resistance and reduce dusting. Pentra®-Sil (NL) is best for existing concrete surfaces to increase abrasion and stain resistance and eliminate dusting. You can also use the treatment during polishing processes. This solution is VOC compliant.

  • Increases abrasion resistance
  • Penetrates, no film to lift or peel off
  • Reduces efflorescence and surface sweating
  • Does not contribute to surface ASR or promote crazing
  • Prolongs finish of polished surfaces
  • Resists stains and dusting, making concrete and facilities easier to maintain
  • VOC compliant, may contribute to LEED points (IEQ credit)

The Original Lithium Densifier

Stand-alone Densifier/Sealer


Application Method: Sprayer
Color: Green tint, dries clear
Coverage Rate: Machine-troweled: 13.5-18.4 m² per liter (550-750 ft² per gallon); Broom-finished: 4.9-9.8 m² per liter (200-400 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: 1.11
Total Solids: 16.0%
VOC Content: <50g/L