Sika Level-425 Dust reduced, cementitious, self-leveling underlayment

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Sika Level-425 Dust reduced, cementitious, self-leveling underlayment
Categories:	Ceramic; Concrete
Material Notes:	Sika® Level-425 is a one-component, durable and versatile cementitious underlayment for interior concrete and cementitious substrates. It can be applied manually or by pump to produce a self-smoothing, rapid-setting, and flat substrate prior to the application of a final floor finish. Typical application thickness is 1/16” to 1/2” (1.5 to 12.7 mm), or up to 1” with aggregate. Where to Use: Concrete Cement substrates Rapid drying cement screed systems OSB/Plywood only suitable for flexible coverings Ceramic tiles, terrazzo or natural stones Old water-resistant adhesive residues Advantages: Dust reduced For interior use only Self-leveling High strength Compatible with subfloor heating systems Manual or pumpable applications Very low shrinkage Can accept caster wheel loading if the thickness is greater than 1/8’’ Low porosity surface Information provided by Sika Corporation.
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Physical Properties	Original Value	Comments

Density	1.89 g/cc
Volatile Organic Compounds (VOC) Content	0.00 g/l	EPA method 24

Mechanical Properties	Original Value	Comments
Flexural Strength	1000 psi @Time 2.42e+6 sec	ASTM C348
Compressive Strength	2000 psi @Time 86400 sec	ASTM C109
	4200 psi @Time 605000 sec	ASTM C109
	5600 psi @Time 2.42e+6 sec	ASTM C109

Processing Properties	Original Value	Comments
Cure Time	3.00 hour	Ready for Foot Traffic
	3.00 hour	Ready for Tiles or Stone
	16.0 hour	Ready for Floor Covering
	70.0 - 80.0 min	Initial set; ASTM C191
	80.0 - 100 min	Final set; ASTM C191
Working Life	30.0 min
Shelf Life	12.0 Month @Temperature 5.00 - 30.0 °C	in original unopened cartridge

Descriptive Properties
Color	Concrete gray

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PSIKA911 / 209818

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