Plasters & Masonry
Vetonit AAC Masonry Mortar AAC520

Thin bed mortar for AAC blocks

For laying internal or external autoclave aerated concrete blocks & panels.
For laying other types of aerated blocks or panels.
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Technical Data Sheet
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Technical Information
Product Description

Vetonit AAC Masonry Mortar AAC520 is a powder adhesive composed of Ordinary Portland Cement, bonding agent, graded aggregates, synthetic resins and special additives. It is supplied as a dry powder in pre-weighed bags ready to use on site, which requires only addition of clean water to produce easily workable mortar. Vetonit AAC Masonry Mortar is ideal for fixing autoclaved aerated concrete blocks & panels. Ideal mortar bed thickness is 3-5 mm.

  • Factory controlled pre-blend ensures consistent high quality.
  • Requires only addition of water on-site at the time of usage.
  • High Adhesion.
  • Good mechanical strength.
  • Excellent workability.
  • Suitable for internal & external applications.
Compliance Standard
  • BSEN 998-2
  • ASTM C-1660
  • ASTM C-150, Type I
  • ASTM C-144
Packaging & Coverage

Vetonit AAC Masonry Mortar AAC520 is supplied in 50 kg Bags, Consumption: 1.4 - 1.6 Kg/m2/ 1mm thickness

Stated consumptions data are for general guidance. Actual consumption depends on the nature of substrate, method of application and wastage.

Shelf Life & Storage

Original sealed bags has a shelf life of 12 months provided it is stored clear of ground in a dry shaded place.

Grey, White
Application Information
Instructions for use

Add to the mixing container 10.5-14 litres of clean water for 50 Kg bag of Vetonit AAC Masonry Mortar. Add the powder to the water and mix with a mechanical plaster mixer or low speed electric drill fitted with a suitable paddle for 3-4 minutes, until a uniform, lump-free consistency is achieved.
Leave the mixed material to stand for 10 min and briefly remix without addition of water.
Manual mixing is allowed for small batch quantities by mixing for approx. 1-2 min, or when homogenous mix is achieved.

Neutralize the suction of the block surface with water before applying mortar. Any excess water should be removed.
Ensure that the first layer of blocks is fixed proper with perfect alignment.
The mixed mortar is spread with trowel on the surface and joints where the blocks are to be mounted. 
Mortar should be applied in a thin layer to enable the continuity of thermo-insulation of the blocks. Leave a space of about 2 cm between the top of block wall and the bottom of slab or beam in order to avoid formation of cracks along the wall. This cavity should be filled with compressible material.
If the blocks are laid directly on a floor with possible humidity rising, it is recommended to apply a proper damp course system first.

All tools should be cleaned immediately after finishing by water. Hardened materials can be cleaned mechanically.

Surface Preparation

The AAC block/panel surface should be sound, clean, free from loose material, grease, laitance, dirt, curing compound, etc.
Prior to Mortar application, wet the entire surfaces with clean potable water and surface should look damp at the time of mortar application.

  • After application, avoid rapid evaporation of water that may cause the small superficial fissures appearance due to plastic shrinkage.
  • Damp the surface for the initial 48 hours by spraying water and covering it with impermeable sheets.
  • The product should not be exposed to running water during application.
  • Do not apply the product at temperature less than +5ºC. During summer season the working area must be covered to prevent ill-effects from direct sun/wind.
Additional Information
Health & Safety

Vetonit AAC Masonry Mortar is highly alkaline therefore avoid direct contact with eyes or skin. It is recommended to use protective gloves and goggles during application. Any skin contact should be wash with soap & water. In case of eyes irritation, immediately wash with copious amount of clean cold water. Seek medical advice.
It is non-flammable. Class A1.
For further information, please refer to material safety data sheet.

Important note

Saveto endeavors to ensure that any advice, recommendations, information it may give, is accurate and correct. It cannot accept any liability either directly or indirectly arising from the use of its products, because it has no direct or continuous control over where or how its products are applied, whether or not in accordance with any advice, specification, recommendation or information given by us. Saveto has the right to change any of the specifications mentioned in the Technical data sheets upon its discretion without prior notification.

Hard copies of TDSs are printed once or twice a year, while our technical data sheets are continuously being updated as per R&D improvements and new 3rd party testing; kindly refer to our website for the latest updated TDSs.

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Saudi Vetonit Co. Ltd. (SAVETO)
P.O. Box 52235 Riyadh 11563, KSA
Toll: (+966 11) 265 3334
Fax: (+966 11) 265 0936
800 124 9009
Fax: (+966 11) 265 0718
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