AT 105



AT 105 is an extremely weather resistant water based acrylic waterproofing membrane. Specially designed as an exposed facade membrane, AT 105 prevents moisture, chloride ion and carbon dioxide entering and damaging the building structure while still allowing the substrate to breath. AT 105 is also highly resistant to dirt retention, as well as containing fungi and algae growth inhibitors. The product’s flexibility and high build qualities allow it to be applied over hairline cracks. AT 105 is water based, low in odour and is available in a range of decorative colours.

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• External anti-carbonation façade membrane
• Semi-permeable membrane – allows wall surface to breathe
• Contains fungi and algae growth inhibitors
• Provides excellent UV resistance and long term protection from elements
• Water based, safe to use, low odour and easy cleaning
• Decorative – choice of colours


- Highly flexible & durable.
- Self cleaning, low dirt retention.
- Resists fungi & algae growth.
- Large range of durable colours.
- Vapour permeable (allows facade substrate to breath).
- Prevents chloride ion, sulfide ion and carbon dioxide attack.


After appropriate surface preparation:- Rendered walls
- Brick/masonry walls
- Fibre cement sheets
- Tilt up and pre-cast concrete
- Light weight aerated concrete blocks(eg CSR Hebel)


- Building facades and external walls.
- Roof parapets.
- Silos, lighthouses and other external structures.
Particularly important in coastal areas, high traffic density areas for application over concrete and brick surfaces.


Product should not be used in trafficable areas. Other AT 105 products are more suitable for this application. Do not apply AT 105 if the surface temperature is below 10°C or above 35°C. Do not apply if rain is imminent.


Surface Preparation
The surface to be coated should be clean, sound, and free from oil, grease, form release agents or bondbreakers and other contaminants. All areas of loose or flaking paint must be removed to a firmly bonded substrate. Concrete surface pores must be open to enable good adhesion.

Cracks and voids
AT 105 can be applied directly over hairline cracks. All other cracks should be treated with a neutral cure silicone. Other deep surface imperfections should be repaired using CLI concrete repair mortars allowed to cure for 7 days before applying the membrane. Refer to CLI Central Technical Service Department for advice regarding areas of concrete spalling. Irregular surfaces resulting from peeled paint should be smoothed using CLI concrete repair systems.

All prepared surfaces should be primed with one coat of CLI 270 Solvent Based Primer at a rate of 6m² per litre. AAC (Hebel) or other highly porous surfaces may require two coats. Allow primer to be dry before applying the membrane (approx. 30 minutes).

Application of AT 105
Apply with nap roller, textured roller or paint brush. Ensure that the coating is applied evenly at the recommended coverage rates.
Apply the first coat of AT 105 at a rate of 1 litre per 2.8m²² to achieve a wet film thickness of 0.35mm, and allow it to dry.
Apply the second coat at approximately the same rate to achieve a final dry film thickness of around 0.35mm.


15 Litres


Coverage: 1 x 15 litre unit of AT 105 will cover approximately 20m² (at a dry film thickness, after two coats, of 0.35mm).


AT 105 is non-hazardous; non-dangerous goods. Do not breath gas/ fumes/ vapour/ spray. Avoid contact with skin. If contact with eyes, rinse thoroughly with water.


The shelf life of AT 105 is 12 months in the original unopened packaging when stored in a cool, dry and well ventilated area. Keep containers securely sealed. DO NOT allow to freeze. Do not store in direct sunlight. Replace lid tightly after use. Product should be used within 6 months of the container being opened.


Clean all equipment with water prior to the product drying. Dispose of containers in compliance with all relevant local authorities, state and federal laws and regulations.


The technical details, recommendations and other information contained in this data sheet are given in good faith and represent the best of our knowledge and experience at the time of printing. It is your responsibility to ensure that our products are used and handled correctly and in accordance with any applicable Australian Standard, our instructions and recommendations and only for the uses they are intended. We also reserve the right to update information without prior notice to you to reflect our ongoing research and development program.

Country specific recommendations, depending on local standards, codes of practice, building regulations or industry guidelines, may effect specific installation recommendations. The supply of our products and services is also subject to certain terms, warranties and exclusions, which may have already been disclosed to you in prior dealings or are otherwise available to you on request. You should make yourself familiar with them.


Sold subject to the Company's conditions of sale which are available on request.


The information supplied in this datasheet is based upon extensive experience and is given in good faith in order to help you. Our Company policy is one of continuous Research and Development; we therefore reserve the right to update this information at any time without prior notice. We also guarantee the consistent high quality of our products; however as we have no control over site conditions or the execution of the work, we accept no liability for any loss or damage which may arise as a result thereof.