SikaTop 107 Flex
Flexible Two-Component Waterproofing Membrane | Buy in Pakistan
SikaTop 107 Flex is a high-performance, two-component, polymer-modified cementitious waterproofing membrane. It is specifically engineered to offer exceptional flexibility, allowing it to bridge cracks and accommodate structural movement. Available from Araish Constructors, Karachi’s authorized Sika dealer, it is supplied as a pre-batched system consisting of a liquid polymer (Part A) and a cementitious powder (Part B).
Key Features
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Highly Flexible: Specifically designed to bridge hairline cracks without tearing or leaking.
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Two-Component System: Pre-measured parts ensure consistent performance and a factory-controlled mix ratio.
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Superior Adhesion: Bonds tenaciously to concrete, brick, and masonry surfaces.
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UV Stable: Weather-resistant and suitable for exposed rooftop applications in harsh climates.
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Dual-Pressure Protection: Waterproofs effectively against both positive and negative water pressure.
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Multipurpose Use: Approved for use in wet rooms, bathrooms, balconies, and terraces.
Typical Applications
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Roofing: Ideal for both flat and pitched roof waterproofing.
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Internal Wet Areas: Waterproofing for bathroom, kitchen, and laundry floors and walls.
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Sub-structures: External basement and retaining wall protection.
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Outdoor Spaces: Balconies, terraces, and podium decks.
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Water Features: Swimming pools, fountains, and water storage tanks.
Full Product Description
SikaTop 107 Flex combines the durability of a cementitious matrix with the high-performance flexibility of a polymer latex. This synergy creates a robust waterproofing membrane that moves with the structure—a critical requirement in Pakistan’s climate, where extreme temperature fluctuations cause significant thermal expansion and contraction that can easily crack rigid coatings.
When applied in two coats to reach a total thickness of approximately 2 mm, SikaTop 107 Flex forms a seamless, monolithic barrier. It is both impermeable to liquid water and breathable, allowing water vapor to escape from the substrate. It adheres to concrete, screed, and brick without the need for a primer in most scenarios, significantly simplifying the installation process and reducing project timelines.
Professional Installation: Purchase SikaTop 107 Flex as a complete system from Araish Constructors. Our expert applicator team is also available for professional on-site installation across Karachi.
Technical Specifications
| Property | Specification |
| Components | 2 (Liquid Part A + Powder Part B) |
| Mix Ratio | Pre-batched (mix as specified) |
| Coverage | Approx. 3 kg/m² for 2 coats |
| Wet Film Thickness | 1.5–2 mm |
| Flexibility | Bridges cracks up to 0.4 mm |
| Colour | Grey |
| Shelf Life | 12 months |
Frequently Asked Questions (FAQ)
Q: Is SikaTop 107 Flex suitable for rooftop waterproofing in Pakistan?
Yes. SikaTop 107 Flex is UV stable and widely utilized for flat roof waterproofing throughout Pakistan. It is specifically formulated to withstand Karachi’s hot and humid climate, maintaining enough flexibility to accommodate thermal movement without cracking.
Q: Can SikaTop 107 Flex be used in swimming pools?
Absolutely. SikaTop 107 Flex is non-toxic once cured and is designed to resist continuous water immersion, making it a reliable and safe choice for swimming pools and water features.
Ready to Secure Your Structure?
Contact Araish Constructors for pricing, technical data, or expert application services.
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Call / WhatsApp: +92 330 3346156
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Visit Us: 30th Commercial Street, DHA Phase 5, Karachi.






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