Brand: RA&Sons

RALASTIC is a single component acrylic waterproofing membrane. It comes in four UV resistant colours and is suitable to seal terraces, flat roofs, balconies, gutters or similar areas that need waterproofing.

Surface Preparation

All surfaces should be completely sound, clean, dry and dust free. Any surface contaminants like grease, oil, mold and efflorescence must be removed in order to promote adhesion. Any holes or cracks must be filled with an appropriate filler and allowed to dry thoroughly.



RALASTIC can be applied by brush or roller. The first coat should be diluted with 15% water, applied and allowed to dry for 24 hours. The second coat should be diluted with 10% water and applied. The final finish can take light foot traffic after 24 hours but may take 2-3 days to fully harden.



Do not use RALASTIC:

  • When temperatures are below +5°C and over +30°C
  • When strong wind or rain is forecast
  • In areas of high humidity




Water Proofing Liquid Membrane

Packaging & Storage

RALASTIC is supplied in 5L or 14L buckets and can be stored up to 6 months in a cool dry place, in its original unopened packaging

Safety Notice

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

Technical Data

Dense and Creamy Paste
White, Tile Red, Grey and Green
Dry Time - Touch Dry
3 Hours
Hard Dry Time
24 Hours
Full Cure
48 Hours
Coverage (Theoretical)
2.5m²/I assuming 2 coatings are applied
10% clean Water
Volume Solid Content
Cat VOC in Accordance dir EU 2004/42/CE cat. A/c Exterior Walls and Mineral Substrates
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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