SBR 50

Pure SBR latex with 50% solid content for enhancing the elasticity

Concentrated resin for mortars. It is used for enhancing the elasticity, adhesion and workability of cement mixes such as plasters, cement screeds, wall smoothing compounds. Tile adhesives like NOVACOL SUPER if mixed with SBR 50 become deformable and therefore able to be used in more demanding applications. Suitable also for creating bonding slurries (mixed with portland cement and water). Dilution with water depending on the type of application.

Color: White
Package: Containers 1 L, Containers 1000 L, Containers 20 L, Containers 5 L
Pallet: 1000 L, 432 L, 480 L


  • SBR 50 can be used as an additive:
    • in cement mixtures with aggregates and water in order to repair mortars or screeds before fixing tiles, renders, industrial floors
    • mixed with cement and water or with the hydraulic binder NOVACEM CREATIVE / NOVACEM CREATIVE FLOOR and water to create a bonding slurry for cementitious screeds and concrete
    • in tile adhesives such as MK 1000, MK 2000, NOVACOL SUPER, GRANDECOL, etc. and grouts in order to increase their flexibility
    • with smoothing compounds such as NOVAFINA or STUCCOFINA for external applications
  • Form: liquid
  • Density: 1,0 ± 0,1 kg/L
  • pH: 8,5 - 9,5
  • Application temperature: from +5°C up to +35°C

Substrate preparation:

The surfaces on which we will apply cement mortar mixed with SBR 50 must be solid without loose parts, clean, free of dust and oil and without traces of paint. The substrate must then be wetted but no excess water must remain on the surface.

Preparation of the mix:

Dilute SBR 50 with water in the correct ratio for every case, pour the solution in to the mixer and then add cement and aggregates. It would be better if cement and aggregates are already mixed together so that we can avoid lumps during the mixing procedure with the SBR 50 dilution. Mix for about 3 - 5 minutes until the mix becomes homogeneous and free of lumps. After the application, especially in very hot weather, protect the mortars produced with SBR 50 from fast drying in order to avoid cracks caused from fast water evaporation.

Bonded screeds from 15 up to 50 mm thick
SBR 50 can be used as an additive for the preparation of bonded screeds for interior and exterior areas. The recommended mixing ratio is shown in the chart below:
SBR 80 – 100 L
Water 80 – 100 L
Cement 350 – 450 kg
Sand 1 m³
Note: prior to the application of this cement screed, it is recommended to apply a bonding slurry consisted of SBR 50, water and cement in proportion 1:1:2-3. Do not wait for the slurry to set, apply fresh on fresh.

Unbonded screeds for thickness greater than 50mm
The minimum thickness of floating screeds depends on the traffic loads. For houses with loads ≤ 2 kN/m² this is determined at 50 mm while for heavy traffic with loads ≈ 5 kN/m² at least at 65 mm. Indicative dosage:
SBR 50 – 60 L
Water 100 – 120 L
Cement 300 – 350 kg
Sand 1 m³

Preparation of the mix for plasters
SBR 50 can be used as an additive for cement based renders for walls in internal and external areas. The result is better adhesion to the substrate, reduced porosity, better resistance to atmospheric agents and increased tensile strength. The recommended mixing ratio for the scratch coat is shown in the chart below:
SBR 2 parts by weight
Water 1 parts by weight
Cement 3 parts by weight
Sand 3 parts by weight

The recommended mixing ratio for the basic layer of plaster is shown in the chart below:
SBR 1 parts by weight
Water 2 parts by weight
Cement 5 parts by weight
Sand 15 parts by weight
The proportion of water has been calculated with dry aggregates. In case of damp aggregates the quantity of added water in the mix should be reduced.

Mixing with cement based compounds
SBR 50 can be used for enhancing the technical characteristics of cement based compounds such as plasters (i.e. ST 30), tile adhesives (i.e. MK 1000, etc.) or wall smoothing compound (i.e. NOVAFINA). The recommended proportion is to mix 1 part of SBR 50 with 2 parts of water, depending also on the type of application. For further information contact our Technical Department.

Bonding slurry - bonding bridge

It is recommended to apply a bonding slurry to increase the adhesion of fresh mortars to hardened concrete, cement screeds such as industrial floors or cementitious waterproofing sealants such as SC 200 PENETRATE, SC ELASTIC, SC ELASTIC EASY.

1 part SBR 50
part water

The application of the new mortar should be done in the still fresh layer of the bonding slurry.


  • SBR 50 should not be added directly to dry mortar. Dilute initially with a suitable amount of water and add this solution to the final mortar
  • Do not use SBR 50 in temperatures lower than +5°C and higher than +35°C
  • For coatings and mortars produced with SBR 50 apply the same placement and maturing rules as for conventional ones
  • Do not use SBR 50 to create monolithic adhesion between new and old concrete (use EPO FLUID)
  • Always take the appropriate precautions for cement mixes (correct granulometry, curing in humid environment) while working with SBR 50 mortars
  • It is recommended that the application be made by a professional user

Legal Notice:

The technical data and recommendations included or listed are the outcome of laboratory measurements combined with our current knowledge and expertise. All information and specifications should in any case be considered as indicative. The Company makes every effort to ensure the accuracy of the information provided herein. Product specifications are subject to change without notice and may differ from product images. Due to printing and application procedures, the colors displayed here should be considered as indicative. In particular, variations in materials, substrates and on-site application conditions are such that no warranty can be given or implied reference to the suitability of the materials for trading or use for a particular purpose and conditions of any given project. Anyone interested in using the product must ensure beforehand that the product is suitable for the intended use and in any case, the user is solely responsible for any outcomes associated with the use of product. Among other things, the Company is not responsible for any normal wear or tear from environmental or any other unsuitable conditions. We reserve the right to revise or change the data herein without prior notice. Restrictions and disclaimers apply to the extent permitted by applicable law. The Company has a Technical Support Department, which has exclusive responsibility for providing technical advice and solutions, addressing relevant issues. Requests to the Technical Support Department are addressed and answered, only in writing. For the latest and valid version of the Technical Data Sheet, the user of the material must refer to our website