Beyem M-15

Dry mortar for masonry works  G (M-15).

BEYEM M-15 is a masonry dry mortar, formulated with high strength cement, selected aggregates and special additives to improve plasticity and workability of mortar. 

  • High water retentivity.
  • Great plasticity. Excellent workability.
  • Suitable for interior and exterior use.
  • Wide range of colours.
  • Factory produced for consistency of proportioning.

Laying of brickwork in walls, pillars and partition walls. Creating mortar screeds and floors. Masonry filling works. General purpose mortar  for masonry works. Suitable in interior and exterior situations.

BEYEM M-15 is suitable for:

  • Brickwork , blockwork, and facing brickwork.
  • Cement based substrates.

Substrates must be clean, compact and  free of substances that reduce adhesion such as dust, oil, grease and with no loose material. Substrates must submit an adequate porosity and surface roughness. Uneven areas must be corrected.  Dampen substrates or bricks with water to cool down if they should be too warm, in case of wind or over absorbent substrates/bricks and wait until the thin layer of water disappears. It is a good practice curing with a fine spray of clean water  24 h after application.

Do not apply on cellular concrete, gypsum based plasters, paint, plastic, wood or materials with  low mechanical properties.

Mix manually of mechanically BEYEM M-15 with  2,75-3,25 l per bag of clean water until a homogeneous, creamy and lump-free paste  is obtained. Let the mix stand for 5 minutes before application. Spread the mixed product with a trowel onto the substrate. Place the brick over the fresh mortar layer and press to ensure adhesion. Smooth with the same trowel. 

  • Always mix with the specified amount of water.
  • Do not apply below 5ºC or above 30ºC.
  • Do not apply when there is  risk of frost, rain, strong wind or direct sunlight.
  • Under extreme weather conditions (gusty winds or high temperatures) drying may occur faster than usual.
  • Do not re-mix  product residues that have started to harden, because that causes a decrease in the properties of the mortar.

Product identity. Properties of mixture and application data




Colour Chart

Bulk density

≈ 1550 Kg/m3

Density of the mix

≈ 2050 Kg/m3


0-2 mm

Mixing water,% 

± 12%


According to use

Tariff code


Final performances



G (M-15)

Bond strength

  Shear bond strength

  Flexural bond strength  


≥  0,15  MPa

≥  0,15  MPa

Compressive strength

≥ 15,0 MPa

Capillary water absorption

 0,4 kg/m2min1/2

Water vapour permeability

µ ≈ 15/35

Thermal conductivity

1,17 W/m·K

Reaction to fire

Euroclass  A1

BEYEM M-15 is packed 25 kg plastic lined paper bags.

Storage:  when stored unopened in a cool dry place, shelf life is 12 months from date of manufacture.

Conservación: 12 meses en envase original cerrado, a resguardo de la humedad y en lugares cubiertos.

Tools can be cleaned easily with water  before the product hardens. Hardened product can be remove only mechanically.

Laying brickworks in walls and others masonry works must be carried out with masonry dry mortar compliant with EN 998-2 Class G (M-15), such as Beyem M-15 manufactured by Rodacal Beyem Company. The substrate must be compact, free from any flaky, loose parts and must be clean and cured, having already completed the shrinkage stage.  Expansion joints must be respected.

For further and complete information about the safe use of our product please refer to our latest version of the Safety Data Sheet, which is available upon request.

Disposal of the product and packaging must be in accordance with current legislation. This is  responsibility of the final product user.



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