Morcem® Cal Acabado Extrafino CR W0

Natural hydraulic lime smoothing mortar.
Natural composition, highly breathable.

998-1 - CR W0

Download technical data sheet

Additional information


Product made of NHL 3.5 white lime, aerial lime, pozzollanic, mineral  loads and other additives. 

Features and applications

  • Waterproof interior and exterior cladding.
  • Suitable for its use in restoration works due to its excellent compatibility with traditional systems.
  • Interior and exterior application in new construction buildings where living conditions may need to be improved regarding cement based mortars.
  • Excellent water vapour permeability, allowing the substrate to breath.
  • Excellent adherence and great plasticity.
  • It does not include cement in its composition.
  • Smooth and polished finish.
  • Manual application.
  • Lime mortars finish.


  • Suitable for substrates that have been previously treated with MOCEMCAL ACABADO.
  • It is necessary to wet the substrate with abundant water and wait until the water disappears in order to apply it.
  • Do not apply on top of plaster or paint.

Instructions for use

  • Add water and mix it mechanically until getting a homogeneous and workable consistence.
  • Mix it adjusting the water to the given instructions avoiding any excess; wait until getting the wanted consistence by a prolonged mixing.
  • Wet the substrate and wait until the water disappears in order to apply the product.
  • Expand the mixed product on top of the substrate with a trowel, putting pressure on the substrate in order to guarantee the adherence and avoid the occlusion of the air.
  • The thickness should not exceed the 2mm.
  • Wet the substrate with abundant water at least 24 hours before applying the product. Cure the applied material during 24 hours after the product has been applied.  In order to proceed to the cladding finish with MORCEMCAL ACABADO EXTRAFINO, it  is necessary to wait about 24-48 hours per cladding base mortar centimetre.

Cautions and recommendations

  • Do not apply it under 5ºC nor above 30ºC.
  • Do not apply it in case of frost, rains, heavy winds or direct sun.
  • Under extreme weather conditions (heavy winds or high temperatures) it is advisable to wet by soft aspersion the product the day after it has been applied.
  • Do not apply it directly on the enclosure (bricks, concrete blocks, etc).
  • Do not add any water to the mixed mortar when it starts to harden.


15 Kg plastified paper bags
1 year storage in its original packaging, indoors and away from humidity.

Technical data

(Statistic results obtained in standard conditions)

Aspect off-white powder.
Mixing water 41±1
Density of the paste 1,65 ± 0,2 g/cm3
 Water vapour permeability µ≤7
Classification according to UNE EN 998-1:  CR W0
Approximate yield 1,0 kg/m2 by mm  thickness


Reacción al fuego:  A1
Absorción de agua: W0
Coeficiente de difusión de vapor de agua: ≤μ6
Adhesión: ≥ 0,1N/mm2 form of fracture B
Conductividad térmica:  (λ10, seco) 0.3 w/mK (tabular value)

Evaluación basada en disposiciones válida en

el lugar previsto de utilización del mortero



The instructions for use are given according to our tests and knowledge and do not imply any commitment by GRUPO PUMA nor free the consumer from the examination and verification of the products for their correct use. Claims must be accompanied by the original packaging to allow a proper traceability.

GRUPO PUMA is not responsible, in any case, for the application of its products or constructive solutions carried out by the application company or other parties involved in the process and / or execution of the work, limiting the responsibility of GRUPO PUMA exclusively to the damages directly attributable to the supplied products, individually or integrated in systems, due to failures in their manufacturing process.

In any case, the drafter of the work project, the technical management or the person responsible for the work, or collaterally the application company or other parties involved in the process and / or execution of the work, must ensure the suitability of the products addressing the characteristics of them, as well as the conditions, support and possible pathologies of the work in question.

The values obtained by GRUPO PUMAS's products or its constructive solutions that, as the case may be, are determined by the EN standards or any other regulation that applies to it in each case refers exclusively to the conditions specifically stipulated in said regulation and that are referred to, among others, to certain characteristics of the support, humidity and temperature conditions, etc. without being them required in the tests obtained under different conditions, all in accordance with the relevant regulation.