FLOWCRET 3-30 EXPRESS

FLOWCRET 3-30 EXPRESS is a fast-setting, self-leveling, polymer-modified cementitious screed used for flooring applications. Features high mechanical strength, superb adhesion to the substrate, excellent workability, fast hardening and drying and low shrinkage. Forms a smooth, level and durable surface that can be promptly coated. Suitable for layers 3-30 mm thick. Certified according to EN 13813 and classified as CT-C30-F7-AR0.5. CE marked. FLOWCRET 3-30 EXPRESS has received an Environmental Product Declaration (EPD) following an assessment of its life-cycle environmental impacts. Registration No: S-P-06174, The International EPD System.
  • Smoothing and leveling of concrete, screeds, terrazzo and surfaces covered with ceramic tiles before installing floor coverings, such as tiles, moquettes, plastic or wooden floors, marble, natural stone, etc.
  • As a final floor coating in basements, attics, warehouses etc.
  • Suitable for floors with underfloor heating.
  • Ideal for fast applications due to its fast-setting property.
  • Appropriate for indoor applications.

Substrate
The substrate must be dry, stable and also free of dust, grease, loose particles, etc.

Priming
1.1. Absorbent surfaces, such as concrete or screeds, should be primed with the acrylic primer UNI-PRIMER. Product application follows once the primer has completely dried (approx. after 2 hours). Primer consumption: 200-300 g/m2.

1.2. Smooth or non-absorbent surfaces should be primed with SUPERGRUND adhesion promoter. FLOWCRET 3-30 EXPRESS can be applied once the primer has completely dried (approx. after 1-2 hours). Primer consumption: 100-200 g/m2.

Application
FLOWCRET 3-30 EXPRESS is gradually added to 5.75-6.00 l of water under continuous stirring until a homogeneous, lump-free, low-viscosity mass is formed. The mixture is left about 3 minutes to settle and is then stirred again. A low speed electric mixer (approx. 300 rpm) is recommended for mixing. The cement mortar is poured onto the primed substrate in one layer and is spread to desired thickness with a large metal notched trowel. As soon as the product has self-levelled, it must be rolled immediately with a suitable spiked roller to release all the air retained within its mass.

  • For application to floors with underfloor heating, it is recommended that expansion-contraction joints be cut every 25-30 m2 of surface and filled with the appropriate elastic materials.
  • During application and initial setting/hardening of FLOWCRET 3-30 EXPRESS, the surface must be protected to prevent quick water loss due to high temperature, UV radiation or wind.
  • Do not add cement, gypsum, lime or other binders to FLOWCRET 3-30 EXPRESS.
  • Before the installation of parquet or vinyl tiles, it is necessary to measure the moisture content with a moisture meter.
  • Temperature during application should be at least +5 oC.
  • Mixture that has started to harden should not be used.
  • Due to cement content, FLOWCRET 3-30 EXPRESS reacts with water forming alkaline solutions and thus is classified as irritant.
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Surface: Concrete

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Application: Metal notched trowel