DESCRIPTION

YELTEN SL410 is a high-performance, cement-based self-levelling screed designed to create perfectly smooth and level substrates. It effectively eliminates surface irregularities while delivering a dense, durable, and seamless finish. Its superior flow characteristics enable fast, effortless application and ensure excellent surface quality with high resistance to abrasion and dust formation.

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FIELDS OF APPLICATION

• Surface preparation prior to installation of PVC, parquet, carpet, ceramic, and similar floor coverings

• Suitable for underfloor heating systems

• Levelling of uneven concrete and cement-based screeds

• Applicable in thicknesses of 4–10 mm in a single layer

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KEY BENEFITS

• Outstanding mechanical strength and abrasion resistance

• Resistant to temperature variations and surface dusting

• Excellent flowability for rapid and uniform application

• Forms a smooth, dense, and non-porous surface

• Time-saving and easy to apply

• Shrinkage-compensated – resistant to cracking and settlement

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PRODUCT DATA

• Composition: High-quality cement, selected aggregates, and advanced polymer additives

• Form: Powder

• Colour: Grey

• Dry Density: 1.50 ± 0.05 g/cm³

• Fresh Mortar Density: 2.10 ± 0.05 g/cm³

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PERFORMANCE DATA*

• Compressive Strength (EN 13813): ≥ 25 MPa (28 days) – Class C25

• Flexural Strength (EN 13813): ≥ 10 MPa (28 days) – Class F10

• Service Temperature: -30°C to +70°C

*Values are based on laboratory tests under controlled conditions. Actual performance may vary depending on site conditions.

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CONSUMPTION

• Approx. 1.9 – 2.1 kg/m² per 1 mm thickness

• Consumption may vary depending on substrate condition

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PACKAGING

• 25 kg PE-reinforced kraft bags

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STORAGE & SHELF LIFE

• Store in dry conditions at temperatures above +5°C

• Protect from moisture and water exposure

• Maximum stacking: 10 bags

• Shelf life: 6 months in original unopened packaging

• Opened bags must be tightly sealed

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APPLICATION PARAMETERS

• Application Thickness: 4 – 10 mm

• Pot Life: Max. 30 minutes

• Application Method: Trowel or pump

• Application Temperature: +5°C to +35°C

• Ready for Covering: 24–48 hours

• Walkable: After minimum 24 hours (light foot traffic)

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SUBSTRATES

• Cement-based plasters and screeds

• Concrete surfaces and slabs

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SURFACE PREPARATION

Substrates must be structurally sound, fully cured, clean, and free from dust, oil, grease, and other contaminants. Weak or polished surfaces should be mechanically roughened. Non-absorbent substrates must be primed prior to application. Overheated surfaces should be pre-dampened to reduce surface temperature. Damaged or defective areas must be repaired using Yelten TH 530 Repair Mortar.

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APPLICATION INSTRUCTIONS

Add 25 kg of YELTEN SL410 gradually into 5.5–6.5 liters of clean water and mix using a low-speed mixer (approx. 400 rpm) until a homogeneous, lump-free consistency is achieved.
Allow the mixture to rest for 3 minutes, then remix briefly before application.
Apply evenly using a steel trowel and adjust thickness accordingly.
Use a spike roller to remove entrapped air and ensure optimal surface quality.
Apply continuously without interruption for best results.

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IMPORTANT NOTES

• Protect freshly applied surfaces from direct sunlight, rain, and frost for at least 24 hours

• Do not use hardened or partially set material

• Do not add foreign materials such as lime, cement, or gypsum

• Follow the recommended water ratio strictly

• Provide expansion joints every 30–40 m² depending on site conditions

• Not suitable for direct application on metal, rubber, PVC, or wood

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HEALTH & SAFETY

Contains cement; avoid contact with skin and eyes. In case of contact, rinse immediately with plenty of water.
Use protective gloves and, if necessary, a dust mask during application.
For further information, refer to the Material Safety Data Sheet (MSDS).