Rastaw Specular

Brand: RA&Sons

RASTA SPECULAR is a beige coloured breathable hydraulic lime render with a fine smooth finish. It is ideal for buildings of a historic nature or in conservation areas. It can be used both internally and externally to achieve a beautiful traditional finish.

Smooth Finish With Hydraulic Lime

Packaging & Storage

RASTAW SPECULAR is available in 20Kg bags and can be stored up to 12 months in a cool dry place, in its original unopened packaging

Safety Notice

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

Surface Preparation

All surfaces should be clean, dry and dust free. Any surface contaminants like grease, oil and efflorescence must be removed in order to promote adhesion.



RASTAW SPECULAR should be mixed with a mechanical paddle mixer to achieve a smooth and lump free consisitency. Mix in a clean bucket using approximately 8 litres of clean water per 20kg bag. Allow the mixture to stand for 5 minutes then re-mix thoroughly before application. Wet the substrate first to aid adhesion and apply with a metal or stainless steel trowel to a thickness of no more than 1mm, apply additional coats until a smooth finish is acquired.




  • At temperatures below +5°C and over +35°C, in strong windy conditions or in direct hot sunlight.
  • Do not dilute the product at any stage


Technical Data

1350 Kg/m³
Coverage (Theoretical)
Pot Life
1 Hour
Compression Strength
Bending Strength
Permeability to Water Vapour (EN1015-19)
Capillarity (En1015-18)
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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