Sika Cemflex 5L

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
1, 5, 25 and 200ltr Containers

Fabric: Available in 1m rolls and various cut roll sizes

Colour
Liquid off white

Product Details

Product Information
Chemical Base
Blend of liquid Polymers

Shelf Life
12 Months in original, unopened container.

Storage Conditions
Store in a dry area between 5ºC and 35ºC. Protect from direct sunlight.

Density
+1,04kg/litre

pH-Value
+ 8.0

Technical Information

Application
Application Information
Ambient Air Temperature
Min. 5°C – Max. 35°C.

Substrate Temperature
Min. 5°C – Max. 30°C.

Application steps
SUBSTRATE PREPARATION
The concrete substrate must be sound.
The surface must be dry and free of all contaminants such as oils, grease, coatings and surface treatments etc.
The substrate must be prepared mechanically to remove cement laitance and achieve a profile open textured surface.
Weak concrete should be removed and surface defects such as honeycombed areas; blowholes and voids must be fully exposed.
Repairs to substrate, filling of blowholes/voids and surface levelling should be carried out using the appropriate product from the Sika® Rep and SikaDur® range of materials.

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.

APPLICATION
Waterproofing slurry

Saturate absorbent surfaces thoroughly with water. While the surface is still damp, apply a coat of waterproofing slurry. Pre-cut the Cemflex® Fabric into convenient sizes for application, then soak the fabric in the slurry.
Remove the soaked fabric from the slurry and smooth it onto the primed substrate making sure to eliminate all air bubbles. Overlaps of adjacent fabric must be a minimum of 50mm. Once the entire area to be treated is covered, apply a generous coat of the slurry and allow to dry.
A final coat of slurry is then applied to complete the application.

Bonding / Bagging

For waterproof bagging, saturate the brick substrate and, while it is still damp, apply a coat of bonding/bagging slurry by means of a block brush.
For bonding, saturate the substrate and, while it is still damp, apply a coat of bonding/bagging slurry by means of a block brush. Immediately apply a render of screed while the slurry is still wet.

Fish Ponds

Due to the sensitive nature of fish, it is important that the fish pond is adequately washed out after applying the Sika® Cemflex® slurry. Cement is highly alkaline and will have an initial effect on the Ph of the water, so ensure that the water is conditioned and stable before introducing your fish.

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