SikaLatex® Power is a high-performance SBR-based multipurpose polymer designed for waterproofing, concrete repair, bonding and cementitious mortar modification. When added to cement slurry, mortar, concrete or grout, it improves adhesion, water resistance, flexibility, tensile strength and durability, while helping reduce cracking and salt-water penetration. It is suitable for roof slabs, sunken slabs, basements, water tanks, retaining walls, waterproof plastering, repair mortars, screeds, masonry and injection grouts.
Product Name: SikaLatex® Power
Product Type: Multipurpose Polymer for Waterproofing, Repair & Bonding
Chemical Base: Styrene Butadiene Rubber (SBR) Emulsion
Appearance: White / Milky Liquid
Specific Gravity: ~1.02 kg/L at 27 °C
pH Value: 8 ± 1
Main Applications: Waterproofing, Bonding, Repair Mortar, Plastering, Grouting & Screed
SikaLatex® Power is a high-performance, synthetic rubber-based multipurpose polymer specially developed for waterproofing, concrete repair, bonding and cementitious mortar modification. It is designed to be added to cement slurry, cement mortar, concrete and cementitious grout to improve adhesion, water resistance, flexibility, toughness and long-term durability.
The product is particularly useful in construction areas exposed to humidity, dampness and continuous water contact. When incorporated into cementitious mixtures, SikaLatex® Power forms a reinforcing polymer matrix within the cement system, helping improve the overall performance of the mortar and reducing cracking and water penetration.
It is fully soluble in water and can be added directly to the gauging water used for mortar, concrete or cementitious grout. Depending on the application, it can also be diluted with water before incorporation into the cementitious system.
SikaLatex® Power is based on a Styrene Butadiene Rubber (SBR) latex emulsion. The milky liquid polymer is designed to interact with cementitious materials and improve the physical properties of the resulting mortar or concrete.
Styrene Butadiene Rubber (Latex) Emulsion
White / Milky Liquid
When mixed with cementitious materials, the polymer helps create a more cohesive and flexible matrix. This improves the bonding between the cement-based material and the substrate while also increasing resistance to water penetration and improving durability.
SikaLatex® Power offers a wide range of properties that make it suitable for professional construction and repair applications:
These properties make SikaLatex® Power a versatile material for waterproofing, repair, bonding, plastering and grouting applications.
SikaLatex® Power works by introducing a polymer phase into the cementitious system. When the latex is incorporated into cement slurry, mortar, concrete or grout, the polymer helps improve cohesion and adhesion within the hardened material.
The modified cementitious mixture becomes more resistant to water penetration and can exhibit improved flexibility and toughness compared with conventional cement mortar. The polymer also helps improve the bond between new cementitious material and existing substrates such as concrete, brick and stone.
This makes SikaLatex® Power particularly useful where ordinary cement mortar needs enhanced water resistance, adhesion, flexibility and durability.
SikaLatex® Power is widely used with cement to prepare waterproofing coatings for:
For waterproofing applications, Sika’s recommended system uses SikaLatex® Power : Water : Cement = 1 : 4 : 8, with two coats generally recommended.
SikaLatex® Power can be used as part of a cementitious bonding coat to improve the bond between new mortar/render and existing concrete or masonry surfaces.
It is suitable for:
Importantly, Sika specifies that pure SikaLatex® Power or a simple latex-water mixture should not be applied directly to the substrate as the bonding agent; cement and sand should be incorporated according to the recommended system.
The product can be incorporated into cement-sand mortar to produce a polymer-modified repair mortar with improved adhesion, toughness, flexibility and water resistance.
This makes it suitable for repairing:
SikaLatex® Power can be incorporated into cement-sand plaster to improve water resistance and adhesion. This is particularly useful for damp areas and structures where conventional plaster may experience moisture penetration.
The polymer can also be used in cementitious grouting applications. It helps reduce grout viscosity and improve the bond of cured injection materials with the surrounding substrate.
SikaLatex® Power can be used in polymer-modified screeds and concrete systems where improved adhesion, flexibility, water resistance and durability are required.
SikaLatex® Power provides several important advantages for construction professionals:
Improved Waterproofing: Helps make cementitious mortar more resistant to water penetration.
Superior Adhesion: Provides excellent bonding characteristics to concrete, stone and brick.
Improved Flexibility: Enhances toughness and flexibility and helps reduce cracking.
Better Durability: Improves resistance to water, water vapour, salts and certain chemical influences.
Multipurpose Application: Can be used for waterproofing, bonding, repair mortar, plastering, grouting and screeds.
Reduced Dusting: Helps reduce surface dusting of concrete.
Thinner Application: Modified cementitious mixes can be applied in thinner sections where appropriate.
Injection Grout Performance: Helps reduce cement grout viscosity and improve cured grout adhesion.
| Property | Typical Value |
|---|---|
| Chemical Base | Styrene Butadiene Rubber Emulsion |
| Appearance | White / Milky Liquid |
| Specific Gravity | ~1.02 kg/L |
| pH Value | 8 ± 1 |
| Total Chloride Ion Content | Nil |
| Shelf Life | 18 months |
| Storage Temperature | +5 °C to +35 °C |
| Application Temperature | +5 °C to +40 °C |
| Substrate Temperature | +5 °C to +40 °C |
| Tensile Adhesion Strength | ≥1.5 N/mm² |
| Typical Application Time | ~20–30 minutes at +30 °C |
The above values are typical product data; actual performance can vary with substrate condition, temperature, mixing ratio, cement and sand quality, application method and site conditions.
Sika provides different mixing systems depending on the intended application.
SikaLatex® Power : Water : Cement = 1 : 4 : 8
Two coats are generally recommended.
SikaLatex® Power : Water : Cement = 1 : 4 : 6
SikaLatex® Power : Water : Cement : Sand = 1 : 4 : 10 : 40
SikaLatex® Power : Water = 1 : 4
Sika specifies dilution with water and dosage of approximately 10–15% by weight of cement, depending on the application system.
SikaLatex® Power : Water = 1 : 6, with typical dosage of approximately 3–6 kg per bag of cement.
Exact ratios should always be selected according to the current Sika Product Data Sheet and the specific site application.
Proper substrate preparation is essential for achieving reliable results.
The substrate should be:
Loose, friable or contaminated material should be removed using an appropriate mechanical or cleaning method.
For waterproofing and bonding applications, the prepared surface should generally be dampened appropriately without leaving standing or glistening water before application.
SikaLatex® Power is normally incorporated into the gauging water or diluted according to the selected application.
For waterproofing coating, the cementitious mixture is applied using a stiff, clean brush to form a thin, continuous coating. A second coat is normally applied crosswise after approximately 2–6 hours, depending on temperature and humidity.
In areas experiencing severe water penetration, Sika indicates that three coats may be required. A suitable reinforcing fabric can also be incorporated between coats where specified by the system.
According to Sika’s product information, SikaLatex® Power is available in different pack sizes depending on the market, including:
Other pack sizes may also be available in specific markets.
SikaLatex® Power should be stored in its original, unopened and undamaged packaging under dry conditions.
Recommended storage conditions include:
The stated shelf life is 18 months from the date of production when stored under the recommended conditions.
As with other construction chemical products, appropriate safety precautions should be followed during handling and application.
For professional applications, the current Sika SDS should always be consulted before use.
All tools and application equipment should be cleaned with water immediately after use.
Once the material has hardened or cured, removal may require mechanical methods.
SikaLatex® Power can be used across a broad range of construction and repair applications, including:
SikaLatex® Power combines the benefits of SBR polymer technology and cementitious construction materials in one multipurpose product. Rather than using conventional cement mortar alone, the addition of SikaLatex® Power can improve adhesion, water resistance, flexibility and durability.
Its versatility makes it useful for contractors working on both new construction and repair projects. From waterproofing roof slabs and water tanks to preparing polymer-modified repair mortar and cement injection grout, the product can serve multiple functions within a construction project.
SikaLatex® Power is a high-performance SBR-based multipurpose polymer for waterproofing, concrete repair, bonding, plastering, grouting and cementitious mortar modification. Its ability to improve adhesion, water resistance, flexibility, toughness and durability makes it a valuable construction chemical for demanding applications.
The product is particularly suitable for roof slabs, sunken slabs, basements, retaining walls, water tanks, sunshades, concrete structures, masonry surfaces and damp areas. It can also be used in polymer-modified repair mortars, waterproof plaster, screeds, cementitious grouts and bonding systems.
With its broad application range, excellent substrate adhesion and ability to enhance cement-based materials, SikaLatex® Power provides a practical and versatile solution for professional waterproofing, repair and construction works.
