Product Data Sheet Show all documents

Sika® Cemflex®

Universal waterproofing and bonding agent

Sika® Cemflex® is an acrylic based emulsion, which improves the water resistance, and adhesion of Portland cement based composites.

  • Watertight
  • Ideal for submerged or subterranean waterproofing
  • Good abrasion resistance
  • Non - toxic
  • Oil resistant
  • UV stable
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Product Data Sheet Show all documents

Usage

Sika® Cemflex® mixed with Portland cement and water forms an effective waterproofing slurry that is used in conjunction with Cemflex® Fabric for:
  • Reservoirs
  • Shower floors and walls
  • Balcony and veranda floors (under tiles)
  • Retaining walls
Sika® Cemflex® added to a sand/Portland cement slurry forms a bonding coat for:
  • Plaster
  • Render
The slurry can also be used for waterproofing between two skins of external brick walling.  

Advantages

  • Watertight
  • Ideal for submerged or subterranean waterproofing
  • Good abrasion resistance
  • Non - toxic
  • Oil resistant
  • UV stable

Packaging

20 lit pails and 200 lit containers. A 1m² kit for DIY is also available.

Fabric: Available in 1 metre wide rolls and various cut roll sizes.

Colour

Liquid off white

Product Details

Product Information

Composition

Blend of liquid Polymers

Shelf life

12 Months in original, unopened container.

Storage conditions

Store in a dry area between 5°C and 40°C. Protect from direct sunlight.

Density

1.04 ± 0.03 kg/lit

pH-Value

7.5 ± 1

 
Technical Information

Mortar mix design

Sika® Cemflex®

Water

Portland Cement

Yield

1 litre

1 litre

3.4kg

3.2 litre

5 litre

5 litre

17kg

16 litre

25 litre

25 litre

85kg

80 litre

Application

Application Information

Ambient air temperature

Min. 5°C – Max. 35°C.

Substrate temperature

Min. 5°C – Max. 30°C.
Consumption

Consumption

Usage

1L Cemflex produces

Total Coverage

Waterproofing slurry

3.2 litres

1m2 (with membrane)

Bonding

4.5 litres

8 - 10m2
Application steps

MIXING

Waterproofing

Mix the required amounts of Sika® Cemflex® and water first, add the correct quantity of Portland cement slowly, while mixing, to avoid the formation of lumps. 

Mixing can either be achieved manually or mechanically, with small quantities of 5litres and less. Larger quantities should be mechanically mixed with a slow speed mixer (set at 400-600 rpm). Mixing should continue until a uniform, lump-free consistency is obtained. The slurry should be mixed periodically during application to prevent settlement.

Bonding/Bagging mixing

Sika® Cemflex® and water are mixed in equal proportions by volume. Mix clean building sand with Portland cement in equal proportions by volume and then add sufficient diluted Sika® Cemflex® and continue mixing until a uniform, lump-free consistency is obtained. Mix periodically during application to prevent settlement.

 

CLEANING OF EQUIPMENT

Remove uncured Sika® Cemflex® slurry from tools with water. Cured material can only be removed mechanically.

 

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