Brand: RA&Sons

RAPRIMER is a water based primer that can be used both internally and externally to aid adhesion of lime cement plasters, renders and exterior paints. RAPRIMER is available in 1L, 5L and 25L sizes.

Surface Preaparation

All surfaces should be sound, dust free and clear of any surface contaminants like oil, grease or salt efflorescence. Remove any loose or flaking paint so that the primer has a sound base to adhere to. Mold or algae growth must be treated with RASAN before RAPRIMER is used. Always test RAPRIMER on a small area first to check compatibility issues.



RAPRIMER should be diluted 1:3 with clean water and applied by brush or roller. Allow the primer to cure for 12 hours.



Do not apply RAPRIMER:

  • When temperatures are below +5°C and over +35°C


Binding Primer

Packaging & Storage

RAPRIMER is supplied in 1L, 5L and 25L plastic containers and can be stored up to 6 months in a cool dry place, in its original unopened packaging.

Safety Notice

Before using RAPRIMER it is recommended to consult the product safety data sheet available on request

Technical Data

1.53 [Kg/I]
Lacteous White Liquid
Water Based
1:3 With Water
Coverage (Theoretical)
150-200 [ml/m²]
Minimum Reticulation Temperature
Volume Solid Content
55% Approx
Cat VOC in Accordance dir EU 2004/42/CE cat. A/h Binding Primers
30 g/L
The data and statements in this information sheet refer to laboratory tests in our possession, conducted in standard environmental conditions. Practical applications on site according to these conditions of use may result in different data readings. Due to the wide variety of possible uses and applications, the end-users should independently determine the suitability of the material for their specific purpose prior to use. R.A. & SONS Manufacturing Ltd. reserves the right to make technical modifications of any kind without prior notice.

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