Schönox AST

Synthetic Gypsum-Based, Rapid-Drying, Smoothing and Patching Compound provides a smooth finish on various substrates in interior areas. Can be installed as a true featheredge up to 1/4″. Excellent for light repair over gypsum substrates in multi-family applications. Over cement, preferably, use Schönox SL.

Technical Data

  • Compressive Strength
    • (ASTM C109/mod-days air cure only): 23N/MM sq / 3600 psi after 28 days
  • Coverage

    (depending on texture of substrate)
    Per unit of 4.5kg/10lbs.:

    • Approx. 180 sq.ft. when applied as a true featheredge
    • Approx. 33 sq.ft. at 1/8″
  • Emicode
    • EC 1PLUS : very low emission
  • LEED
    • EQc2 – 3 pointsLow-Emitting Materials
    • MRc1 – up to 2 pointsLife-Cycle Impact Reduction
    • MRc2 – 1 pointEnvironmental Product Declaration
    • MRc3 – 1 pointSourcing of Raw Materials
    • MRc4 – 1 pointMaterial Ingredients
  • Pot Life
    • Approx. 20 minutes
  • Ready for covering
    • After approx. 30 minutes when applied as a true featheredge
    • After approx. 12 hours at 1/4″ thickness
  • Shelf Life
    • 18 months unopened
  • Working Temperature
    • Not below 41°F floor temperature
  • Packsize
    • 33lb. net weight in paper bags
    • 10lb. net weight in paper bags
    • *Schönox Product Calculator is based on 10lb bag

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