25kg Sika Top Seal 107 (A+B) – High Performance Cementitious Waterproofing System in Ghana
25kg Sika Top Seal 107 (A+B) is a professional-grade, polymer-modified cementitious waterproof mortar slurry engineered to seal and protect concrete, mortar, and masonry surfaces against water penetration and carbonation. Supplied as a complete 2-part set consisting of 5kg Part A liquid polymer and 20kg Part B cement-based powder, it delivers a flexible, durable, and breathable waterproof barrier suitable for interior and exterior applications.
Available in Ghana through CETECH Ghana, SikaTop® Seal-107 is widely trusted for waterproofing water tanks, reservoirs, bathrooms, basements, foundations, retaining walls, and other wet areas. It is potable water approved, making it suitable for structures that come into contact with drinking water.
For contractors, engineers, facility managers, and developers seeking reliable waterproofing performance under Ghana’s demanding climate conditions, SikaTop® Seal-107 provides a proven solution backed by the innovation and quality standards of Sika.
What SikaTop® Seal-107 Is and Why It Is Essential for Ghana Construction
SikaTop® Seal-107 is a 2-part, polymer-modified cementitious waterproof mortar slurry designed to create a protective coating over cementitious substrates. When Parts A and B are mixed together, they form a workable slurry that can be applied by brush or trowel to create a seamless, adherent waterproof membrane.
Unlike basic surface sealers, this system integrates polymer technology with cement-based chemistry, producing a flexible yet strong barrier that resists water penetration while remaining breathable. This breathability allows trapped moisture vapor to escape without blistering or delamination.
In Ghana, where heavy rainfall, high humidity, and groundwater pressure can threaten building integrity, such performance is critical. Water infiltration not only causes staining and dampness but also accelerates reinforcement corrosion and carbonation. SikaTop® Seal-107 directly addresses these risks by sealing the surface and reducing moisture ingress.
Product Composition and Technical Structure
The 25kg Sika Top Seal 107 (A+B) set is supplied as two precisely formulated components.
Part A is a 5kg liquid polymer component designed to improve adhesion, flexibility, and water resistance.
Part B is a 20kg cement-based powder component formulated with selected aggregates and additives to create a dense, durable mortar slurry when mixed with Part A.
The two components are engineered to work together. The polymer in Part A enhances the cement matrix in Part B, producing a coating that combines the strength of cement with the flexibility and bonding properties of advanced polymers.
The result is a coating that adheres strongly to concrete, mortar, and masonry while maintaining durability under wet and exposed conditions.
Coverage and Application Rate
Coverage depends on application thickness and substrate condition. As a general guideline, one 25kg unit typically covers a significant area, depending on thickness, at approximately 2.0 kg per square meter per millimeter of applied thickness.
For recommended use, apply at least two coats to achieve a total thickness of 1.5 to 2.0 mm. This thickness range ensures effective waterproofing performance and long-term protection.
CETECH Ghana provides support in estimating material quantities for both small and large projects, ensuring accurate budgeting and efficient procurement.
Key Performance Advantages
SikaTop® Seal-107 delivers a range of performance benefits that make it a preferred cementitious waterproofing system in Ghana.
Flexible and durable waterproof barrier
Excellent adhesion to concrete, mortar, and masonry
Breathable coating that allows vapor diffusion
Resistant to moisture and carbonation
Suitable for both interior and exterior use
Potable water approved for water-retaining structures
Easy brush or trowel application
Polymer-modified formulation for enhanced performance
These characteristics allow it to outperform many basic cement slurries and unmodified waterproof coatings.
Ideal for Water Tanks, Reservoirs, and Wet Areas
Water containment and wet environments demand high reliability. SikaTop® Seal-107 is ideal for waterproofing water tanks, reservoirs, bathrooms, kitchens, and similar areas where consistent moisture exposure occurs.
Because it is potable water approved, it can be safely used in structures intended for storing drinking water. This makes it particularly valuable for residential water tanks, commercial storage systems, institutional facilities, and community infrastructure projects across Ghana.
In bathrooms and wet rooms, it forms a secure base waterproofing layer beneath tiles and finishes, reducing the risk of leakage into adjoining rooms or floors below.
Application Guidelines for Reliable Performance
Correct preparation and application are critical to achieving the full benefits of SikaTop® Seal-107.
Surface Preparation
The substrate must be sound, clean, and pre-wetted. Surfaces should be free of dust, grease, laitance, loose particles, and contaminants. The substrate must be prepared to a Surface Saturated Dry (SSD) condition before application.
Mixing Procedure
Add Part A liquid to a clean mixing vessel. Then gradually add Part B powder while mixing with a low-speed drill for 2 to 3 minutes. This ensures a homogeneous, lump-free slurry suitable for brush or trowel application.
Coating Application
Apply at least two coats to achieve a total thickness of 1.5 to 2.0 mm. Allow appropriate time between coats according to site conditions. Ensure full coverage without pinholes or voids.
Environmental Conditions
Do not apply in direct sunlight or heavy wind, as rapid drying may affect performance. Clean tools with water immediately after use to prevent material buildup.
CETECH Ghana offers consultation services to guide contractors and project teams on best practices for mixing ratios, thickness control, and curing conditions.
Durability and Environmental Resistance
SikaTop® Seal-107 is engineered for long-term durability in both interior and exterior environments. Its polymer-modified cementitious composition provides enhanced resistance to water ingress and carbonation.
Carbonation is a process where carbon dioxide penetrates concrete and reduces alkalinity, potentially leading to reinforcement corrosion. By limiting moisture and gas penetration, SikaTop® Seal-107 contributes to extended service life of reinforced structures.
In Ghana’s tropical climate, characterized by heavy rains, high humidity, and fluctuating temperatures, this level of durability is essential. Structures protected with SikaTop® Seal-107 are better equipped to resist moisture-driven deterioration and environmental stress.
Practical Applications Across Ghana Sectors
Beyond residential buildings, SikaTop® Seal-107 is suitable for diverse industries and infrastructure projects.
Construction projects use it for basements, foundations, retaining walls, and podium decks.
Manufacturing facilities apply it in process areas where moisture control is critical.
Mining operations utilize it for water-retaining structures and containment systems.
Oil and gas facilities use it in bund walls, pits, and storage areas exposed to liquids.
Agricultural facilities apply it in water storage tanks and irrigation structures.
Logistics and warehousing environments use it to protect concrete surfaces exposed to moisture.
Emergency and disaster preparedness projects rely on it for resilient water storage and containment systems.
Its versatility supports widespread use across Ghana’s developing infrastructure landscape.
Comparison With Other Waterproofing Options in Ghana
There are several types of waterproofing solutions available in Ghana, including bituminous coatings, crystalline waterproofers, polyurethane membranes, and other cementitious slurries.
Compared to bituminous coatings, SikaTop® Seal-107 provides a cement-compatible, breathable finish that integrates naturally with concrete substrates.
Compared to single-component cementitious products, the 2-part polymer-modified system offers enhanced flexibility and adhesion.
Other brands and related products are available in the market; however, SikaTop® Seal-107 is widely regarded for its consistent quality and performance in water-retaining and wet-area applications.
CETECH Ghana stocks a range of waterproofing solutions and can advise on product selection based on project requirements and exposure conditions.
Safety and Compliance Considerations
As with all professional construction materials, proper handling and compliance with manufacturer instructions are essential.
Always consult the most recent product instructions before use.
Ensure substrate preparation meets Surface Saturated Dry requirements.
Avoid application in unsuitable weather conditions such as direct sunlight or heavy wind.
Use appropriate personal protective equipment.
Clean tools with water immediately after use.
Following these guidelines ensures safe handling and optimal performance.
Why Buy 25kg Sika Top Seal 107 (A+B) From CETECH Ghana
CETECH Ghana is a trusted supplier of genuine Sika waterproofing products across Ghana. Customers benefit from both online and offline access to high-quality construction chemicals and expert support.
Available for purchase through ecommerce platform and physical stores.
Bulk supply and industrial sourcing available for large projects.
Technical support for mixing, application, and surface preparation.
Nationwide delivery to contractors and developers.
Access to related waterproofing accessories and complementary products.
Consultation, supply, and project guidance tailored to Ghana conditions.
By purchasing from CETECH Ghana, contractors and project owners secure not only a reliable product but also professional backing to ensure successful waterproofing outcomes.
A Professional Waterproofing Solution for Long-Term Protection
25kg Sika Top Seal 107 (A+B) is a 2-part, polymer-modified cementitious waterproof mortar slurry designed to seal concrete, mortar, and masonry surfaces effectively. Supplied as a complete 25kg set of 5kg Part A liquid polymer and 20kg Part B cement-based mix, it forms a flexible, durable, and breathable barrier that protects against moisture and carbonation.
Ideal for waterproofing water tanks, reservoirs, wet areas, and other moisture-exposed structures, it offers reliable performance for interior and exterior use and is potable water approved. With clear mixing, application, and thickness guidelines, it supports consistent, high-quality results on professional job sites.
For builders, engineers, and facility managers seeking dependable waterproofing in Ghana, 25kg Sika Top Seal 107 (A+B) from CETECH Ghana represents a proven, technically sound, and performance-driven solution for long-lasting structural protection.
