Bonding Agent and Waterproofing Admixture

KOWAY-Latex is a modified Styrene Butadiene emulsion to be mixed with cement (neat) or cement/sand mortar for improved adhesion and water-resistant properties.

KOWAY-Latex is a high quality emulsion that substantially increase the qualities of cement mortars, such as:

• Bonding slurry;
• Thin layer patching mortars;
• Waterproofing renders;
• Floor screeds;
• Concrete repair mortar;
• Abrasion resistant linings;
• Tile fixing mortars;

ADVANTAGES

• Extremely good adhesion;
• Reduced shrinkage;
• Greater elasticity;
• Excellent water resistance;
• Improved chemical abrasion resistance;
• Non toxic;
• KOWAY-Latex does not reemulsify, even in high alkaline conditions;
• Suitable for used in cement mortar in contact with potable water;
• High strength floor screeds;
• For filling and patching mortars that require thin layer finishing;
• Improved flexibility and resistance to cracking;
• As a bonding agent for renderings, for wear resistant floor toppings in water treatment plants, sewage systems.

• Base: Styrene Butadiene Rubber emulsion
• Specific gravity: ~1.02
• Solid content: ~37%

• Form/Colour: Liquid/White
• Packaging: 5/25/200 ltr drum
• Storage: Dry, cool, shaded place
• Shelf life: Min 6 months if stored properly in unopened, original packaging

Surface preparation:

• Concrete surface should be clean, sound, free from oil, grease, cement laitance and all loosely adhering particles;
• Absorbent surfaces should be saturated thoroughly but no standing water;

Materials:

• Aggregates should be well graded and thorougly washed, Sand particles sizes should correspond to the thickness of mortar to be applied and required surface finish;

USE AND APPLICATION

1. Bonding agent for rendering/Bonding between old and new concrete

• Mixing ratio: 1 ltr Latex + 1 ltr water + 4 kg cement = slurry consistency;
• The above slurry covers approx. 4 m2.
• Application: Add cement to the Latex-water premix and mix until an even, creamy consistency is achieved. Apply the Latex slurry onto the prewetted substrate in 1-2 mm thickness and place new concrete or mortar render immediately (wet-on-wet application)

2. Floor screeds/renders:

• Mixing ratio :
  • Cement: sand = 1: 2.5 – 3 (parts by weight, sand in S.S.D condition)
  • Cement: sand = 1: 3 – 3.7 (parts by volume, sand in S.S.D condition)
• Adjust consistency with a mixture of water and KOWAY-Latex, by using a ratio of KOWAY-Latex: water = 1: 3;
• Apply the KOWAY-Latex mortar when the KOWAY-Latex bonding slurry is still wet.

NOTES ON APPLICATION/LIMITS

• Never use KOWAY-Latex and water as a bonding coat without adding cement .
• In warm or windy weather, the use of standard curing method is necessary to prevent premature drying out of mortar.
• Always pre-wet the absorbent substrate but no standing water.
• In case of multi-layer appliation, always work wet-on-wet .
• In case of use in premanently wet structure (swimming pool, e.t.c) allow KOWAY-Latex mortar to cure for min 1 week before the structure is put into service or before it is immersed permanently under water.

CLEANING

• Clean all tools and equipment with clean water immediately after use.

• Ecology: Do not dispose into water or soil
• Transportation: Non hazardous
• Water disposal: According to local law

Important notes: KOWAY-Latex may cause irritation. Suitable precautions should be taken to minimize direct contact with the skin. If the material gets into the eyes or mucous membrane, rinse immediately with clean water and seek medical attention.