Rafil tal-fil Interior

Brand: RA&Sons

RAFIL tal-fil INTERIOR is a dry-premixed sandstone mortar specifically formulated for repointing, grouting and small repairs work on interior sandstone and fired clay. Its unique colour complements various types of sandstone like Maltese or Lecce.

Interior Stone Mortar

Packaging & Storage

RAFIL INTERIOR is supplied in 25kg bags and can be stored up to 12 months in a cool dry place, in its unopened original packaging

Safety Notice

Before using RAFIL INTERIOR 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.

Preparation And Application

RAFIL should be mixed with a paddle mixer on a low speed setting. Use eye protection and a dust mask at all times. Mix in a clean bucket using approx 5-6 litres of clean water per 25kg bag. Mix the product until a smooth lump free mortar is achieved.

To aid adhesion wet the substrate first and then apply the mortar to a maximum depth of 20mm, if more depth is required build up the mortar in layers. Different textures can be achieved by finishing off with a steel jointing tool, sponge or brush. To enhance stain resistance and water ingress apply two coats of RAPROTEX


Do not apply RAFIL INTERIOR tal-fil:

  • Directly on gypsum surfaces or gypsum boards unless they have been previously treated
  • At temperatures below +5°C or above +35°C, strong wind or high humidity.
  • On painted or blistering surfaces
  • Do not dilute RAFIL INTERIOR while curing. Protect hands and face as the product is alkaline

Technical Data

1400 [Kg/m³]
Coverage (theoretical)
14 [Kg/m²] per 1cm thickness
Mixture Water Content
Pot Life
3-4 Hours Approx at 20-70°C 70%RH
Compression Strength After 28 Days
5 [N/mm2] CSIII as per UNI 1015-11
Bending Strength After 28 Days
2 [N/mm²]
>0.4-B[N/mm²] - FP UNI 1015-12
Permeability to Water Vapour
12 - According to UNI EN 1015-19
Class W1 - According to UNI EN 1015-18
Fire Resistance
According to Class A1 - as per En12 501-18
Thermal Conductivity
0.40[W/mK] - UNI EN 1745:2002╗10,dry
Thermal Capacity
1[KJ/KgK] - According to UNI 1745:2002
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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