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
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Compressive Strength
- (ASTM C109/mod-days air cure only): 23N/MM sq / 3600 psi after 28 days
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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″
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Emicode
- EC 1PLUS : very low emission
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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
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Pot Life
- Approx. 20 minutes
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Ready for covering
- After approx. 30 minutes when applied as a true featheredge
- After approx. 12 hours at 1/4″ thickness
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Shelf Life
- 18 months unopened
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Working Temperature
- Not below 41°F floor temperature
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Packsize
- 33lb. net weight in paper bags
- 10lb. net weight in paper bags
- *Schönox Product Calculator is based on 10lb bag