Beyem Neocal Adhesivo

Natural hydraulic lime (NHL) adhesive for laying ceramic tile and natural stone.

BEYEM NEOCAL ADHESIVO is a hydraulic lime based adhesive, formulated with metakaolin, natural hydraulic lime (NHL), selected washed aggregates, natural cellulose fiber, mineral thickeners (sepiolite) and resins to improve workability, water retentivity, open time and adhesion. No vertical slip. Allows adjustment of tiles. Especially indicated for the natural laying of tiles. Natural composition. Free of Portland cement. Indoor environment quality. Classifed as A+ class according to Décret nº. 2011-321 (France). Free of radionuclides.

  • Natural composition.
  • High water retentivity.
  • Extended  open time. Allows adjustement of tiles.
  • Easy workable. Highly thixotropic.
  • Compatible with old masonry brickworks/walls.
  • High  tensile adhesion strength.
  • No vertical slip.
  • Free of chlorides.
  • New construction and building rehabilitation.
  • Natural bacteriostatic and natural fungistatic.
  • Very low VOCs  emissions.
  • Radiation-free certificate.
  • Mineral product.

Laying of small and medium ceramic tiles of medium and high absorption (Group III) in interior walls and floors. Laying of ceramic tiles of high absorption in exterior floors. Laying of natural stone with adequate absorption. Especially suitable for laying hydraulic tiles, clay tiles, majolica, etc. Suitable for underfloor heating or under tile warming.

BEYEM NEOCAL ADHESIVO is suitable for:

  • Cement based substrates and lime based substrates.
  • Cement and/or lime renders, plasters and screeds.
  • Traditional renders and screed floors.
  • Natural hydraulic lime (NHL) substrates.

Substrates must be clean, compact and free of substances that reduce adhesion such as dust, oil, grease and with no loose material. Uneven areas must be corrected with suitable smoothing and finishing products. Substrates must be free from any rising damp and have already completed the curing period of hygrometric shrinkage. Dampen substrates with water to cool down if they should be too warm, in case of wind or over absorbent substrates and wait until the thin layer of water disappears. Do not use on gypsum based plasters or paint.

Mix manually of mechanically BEYEM NEOCAL ADHESIVO with 7,75-8,75 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.

Small tiles must be fixed using  a notched trowel of 6×6 mm. For tiles sizes greater than 400 cm2,  a notched trowel  8×8 mm  must be used.  Spread the mixed product onto the substrate to a maximum surface area of 1 m2 or no more than can be tiled within 30 minutes in normal conditions. Unfavorable environmental conditions (strong sunlight, drying wind, high temperature as well as a highly absorbent substrate), could drastically reduce this time to a few minutes. Bed the tiles firmly into the adhesive with a slight sliding and/or twisting action, to ensure a good contact and complete coverage.

It is good practice to lift an occasional tile after fixing, to verify that the required contact is being achieved. Back of the tile must be completely wet.

  • On gypsum substrates, apply BEYEM FIJADOR primer before , to avoid contact between gypsum and the cement of the adhesive, avoiding adverse reactions.
  • Do not apply on plastic, metal or wood.
  • Do not apply below 5ºC or above 30ºC.
  • Do not apply when there is  risk of frost, rain, strong wind or direct sunlight.
  • Leave joints between tiles with a minimum width of 2 mm. Grout with  BEYEM JUNTA UNIVERSAL / BEYEM JUNTA EXTRAFINA.
  • On floors  with a surface area greater than 30 m2 , it is recommended to leave separation or sealing joints filled with a deformable material.
  • On interior floorings larger than 15 m2, it is advisable to keep a free perimeter expansion joint between the floor and the wall or pillar, hidden by a skirting board (of approximately 5 mm).
  • The temperature, ventilation, and absorption of the substrate and covering materials, may vary the adhesive workability and setting times.
  • For use with tile types not described, consult the Technical Department.

Product identity. Properties of mixture and application data





Bulk density

≈ 1050 Kg/m3

Density of the mix

≈ 1500 Kg/m3


0-600 µm

Mixing water,% 

± 33%

Pot life

≈ 2 h

Adjustability time

≥ 20 min


≈ 48 h


≈ 3,0 Kg/m2  (single spread technique)

≈ 4,25 Kg/m2 (double spread technique)

Tariff code


Final performances


Initial tensile adhesion strength (BIII EN 14411 tile)

≥ 0,5 N/mm2

Tensile adhesion strength after water immersion (BIII EN 14411 tile)

≥ 0,5 N/mm

Tensile adhesion strength after heat ageing (BIII EN 14411 tile)

≥ 0,5 N/mm2 

Tensile adhesion strength after freeze/thaw cycles (BIII EN 14411 tile)

≥ 0,5 N/mm2 

Open time

30 min


< 0,5 mm

Total VOCs (28 days)

< 500 µg/m3

Radioactivity index (U, Ra, Pb, Th, others)

I = 0,107

BEYEM NEOCAL ADHESIVO  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.

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

Laying of ceramic tiles, clay tiles, hydraulic tiles, majolica, etc. must be carried out with natural hydraulic lime (NHL) based adhesive, free of Portland cement, such as Beyem Neocal Adhesivo 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. Existing joints must be respected and elastic fractionizing and perimeter joints must be created. Ceramic tiles must be laid with joint-gap spacers with a width of ___ mm.

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.


Technical sheet

Component Safety Data Sheet

Factory Production Control Certificate

Declaración Compuestos Orgánicos Volátilesde Prestaciones

Certificado Sistema Gestión de Calidad ISO 9001

Certificado Sistema Gestión de la I+D+i UNE 166002


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