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Description
Cemflex is a cement based 2 part polymer modified waterproof slurry coating. It is applied to concrete, masonry and mortar to prevent water infiltration.
Advantages
• Pre-batched components – mixes and applies easily
• Non-corrosive to steal or iron
• Increased salt and frost resistance
• Protects against concrete carbonation and water
• Good adhesion to sound, prepared substrates penetration
• Slurry or trowellable consistency
• Non-toxic – suitable for contact with drinking water
• Permeable to water vapour, allows substrate to breathe
• Effective against, both positive or negative water pressure
Uses
Cemflex is suitable for the following applications:
• Internal & external basement walls
• Protection of concrete structures against the effects
• Fine “hairline” cracks in concrete of carbon dioxide, de-icing salts and freeze thaw
• Water tanks, swimming pools etc
• General Interior and exterior waterproofing
• Retaining walls
• Seawalls
• Bathroom floors
• Terraces and balconies
• RC gutters and planter box
• Potable concrete water tanks
Physical Properties
Form / Colour • Part A White Liquid Density A+B (Mixed) 1.9-2.0kg per litre (Ratio 1A: 4B)
• Part B Grey or white powder Adhesive strength 1.0 to 1.5 N/mm² (on concrete)
• Part A+B Grey slurry Pot life 30min at 25ºC Mix Ratio Part A: Part B 1:4 W/W
Application Directions
Surface Preparation
Concrete, mortar and masonry surfaces must be clean, free from grease, oil, laitance, loosely adhering particles and sharp edges. Absorbent surfaces have to be thoroughly saturated with water prior to application or first coat of Cemflex. However, no loose standing water should be on the surface before application. All intersections of horizontal and vertical surfaces should be profiled with a mortar fillet of 25mm x 25mm. Note: Cemflex will not bond to surfaces that have been treated previously with water repellent.
Mixing
Under normal circumstances, when the full quantities of both parts are mixed together, a slurry consistency will result. The consistency of the mix can be altered by reducing the amount of Part A (liquid) to be used. For trowel application, use only 90% of Part A (approximately 4.5kg). Do not add water or any other mixtures and compounds. Mix in clean container by slowly adding the powder component (Part B) to the liquid component (Part A) and stirring with a low speed mixer (500rpm). Use within 30 minutes.
Application
Whilst the substrate is still damp from saturation, apply the first coat. Leave to harden for approximately 4-8 hours at temperatures above 20ºC before applying the second coat. For slurry consistency, apply with a hard plastic bristled brush or broom. For floor applications, to avoid risk or damage to the first coat, it is recommended that the second coat be applied before 24 hours. If the second coat is applied 12 hours or later, the first coat shall be slightly pre wetted, preferably by using a fine spray. After the second coat has been applied, better finishing can be achieved by rubbing down with a soft, dry sponge. Cemflex can also be applied by trowel or by spraying.
Overcoating
For overcoating with cementitious materials, allow the second coat to harden at least 3 days prior to overcoating. For overcoating with non cementitious materials please refer to our Technical Service Department.
Curing
Generally not required but precaution should be taken for application done directly under sunlight and in windy conditions. It should also be protected from direct rain for at least 4 hours.
Estimating Data (Theoretical)
• Bathrooms, terraces and balconies is 1kg per m² per coat, as protective coating is 2kg per m² per coat.
• Coating <1meter waterhead is 1.5kg per m² per coat, >1meter waterhead is 2.0kg per m² per coat
Note: Cemflex must be applied in a minimum of 2 coats (3 coats may be required in areas of extremely high infiltration)
Packaging
25kg kits (Part A: 5kg containers and Part B: 20kg bags)
Shelf life
12 months from the date of production when stored in original unopened packaging in a dry cool place.
Important Notes
• Minimum ambient and substrate temperature is 8ºC - Optimum application temperature should be from 8 ºC to 32 ºC
• Never apply more than 4kg per m² of Cemflex in one single layer.
• Apply only to clean, sound substrates – surfaces should be well dampened but free of surface water and leaks.
• Cemflex is not a decorative treatment and may display signs of “blooming” in damp weather conditions. This does not affect the quality of the coating in any way. Where a decorative finish is required, overpaint Cemflex with any approved Enviro protective and decorative coating.
• For potable water application, wash the surface with water before use.
Clean
Clean tools and equipment immediately with water. Hardened material can only be removed mechanically.
Downloads
- Technical Data Sheet
- VOC Certificate
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