ARALDITE® GY 23919 / ARADUR® 23919

Araldite® GY 23919 / Aradur® 23919 system provides a waterproof concrete topping with high trength and fast cure; ideal for driveways, factory floors and cement rendering. Mortars based on this system are suitable for bedding floor tiles, concrete blocks and bricks. An application of this system over newly set concrete can prevent excessive water loss during cure and to form an impervious oil resistant and non-dusting surface. The coating can also ensure a smooth even surface and stop hairline cracks. If required, it may be overcoated with conventional paints.

• Forms a tough impervious coating with a matt finish.
• Excellent adhesion to wet or dry surfaces, including freshly poured concrete.
• Simple 1: 1 mixing ratio
• Easy to apply by brush, roller or spray
• Odourless, relatively non-toxic and non-flammable
• Equipment, tools may be cleaned up with water
• Economical - supplied as a concentrate, requires dilution with extra water before application.

Surface Pretreatment

Aradur® 23919 and Araldite® GY 23919 are tolerant to application over poorly prepared surfaces, but for best results, thorough surface preparation is desirable:
1. Concrete : Should be free from grease and oil - if necessary, clean with industrial grade degreasing agents. Once clean, steps must be taken to remove laitance, this is best carried out by using:
                   • Mechanical abrasion: High pressure water or wet grit blast.
                   • Acid etching : concentrated Hydrochloric Acid 1:1 with water and spreading 0.5 litres of this mixture each m2. After the reaction has ceased (about 10 minutes) the area should be thoroughly washed and scrubbed with a stiff bristled broom to remove loose sand.
It is not necessary to dry the concrete before applying this Araldite system.
2. Painted surfaces: Steps should be taken to remove all paint.
3. Brick, sandstone, masonry, plaster boards, fibre cement sheeting: Should be cleaned and
free from dust.

Araldite® GY 23919 and Aradur® 23919 should be stored in a dry place, preferably in its sealed original container, at temperatures as stated above. Under these conditions, the shelf life will correspond to the expiry date stated on the label. Partly emptied containers should be closed immediately after use. For information on waste disposal and hazardous decomposition products likely to be generated in the event of fire, refer to the Material Safety Data Sheets (MSDS) for the individual products.