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Cement screeds

Cement screeds

  • Priming screed GREINPLAST JP


Priming screed

Used to make cement priming layers under ceramic tiles, carpeting and PVC linings, parquets, floor panels etc. It can be used as a press-down layer, and to form inclined sections in bathrooms, basements, on balconies and terraces. It can be laid on 20-100 mm thick bases, and as a priming layer not bonded with the base, laid on insulation layers made of plastic films, tar board, EPS, mineral wool etc., at a thickness of 40-100 mm. The product is classified as cement screed, CT-C20-F4 type.

Packaged in 25 kg containers.


Preparation of mortar: Empty the package (25 kg) into 2,8-3,5 l of clean, cool water and stir until a smooth mass without lumps is obtained. Put the mortar aside for 5 minutes, then stir again. Adding too much water may result in worsening of mortar strength parameters. The mortar can be used directly after stirring and retains its working parameters for ca. 90 min.
Application of mortar: The mortar should be laid in strips, between levelled guide planks. Remove excess mortar, remove the guide planks immediately, and the remaining gaps should be filled and levelled. After levelling and initial bonding, the surface should be smoothened with an EPS trowel. In heave duty and thin floors, as well as those laid on an acoustic thermo-insulating material, steel reinforcement meshes are recommended to be sunk in the floor. Use tools suitable for the intended scope of works and the surface size.

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Recommendations and remarks

The temperature of the base and its surroundings during works and mortar drying should be between +5°C and +25°C. The specified processing times may be subject to considerable variations under the influence of adverse thermal and moisture conditions. Areas exposed to soiling should be secured. 
Information contained on the package help ensure the optimal use of the product, however, it does not create any legal liability of the Manufacturer, due to the fact that the conditions of use remain outside of its control. Any attempts to change the composition of the product are not allowed, as they may considerably reduce its quality.        

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