SIKAFLEX®-11 FC PURFORM GREY 600ML

SIKA SIKAFLEX®-11 FC PURFORM GREY – PROFESSIONAL MULTIPURPOSE ELASTIC ADHESIVE AND JOINT SEALANT

Price: KES 1,800 (Inclusive of VAT)
Brand: Sika Kenya
Product Line: Purform® Polyurethane Technology
Color: Concrete Grey
Packaging: 300 ml Cartridge / 600 ml Foil Sausage Pack
Availability: In Stock
Supplier: Startcore Ventures Limited, Bhavesh Centre, Mezzanine Floor, Ngara Road, Nairobi, Kenya

PRODUCT OVERVIEW

Sika Sikaflex®-11 FC Purform Grey represents the absolute pinnacle of high-performance, single-component, elastomeric sealing and bonding technology available to the Kenyan construction industry today. Developed by Sika’s Global Research Laboratories and utilizing their revolutionary, ultra-low monomer Purform® polyurethane base, this dual-purpose construction compound functions simultaneously as a high-strength structural adhesive and a permanently flexible joint sealant.

For decades, master builders, structural engineers, and flooring professionals across Nairobi, Mombasa, and Kisumu have relied on the legendary Sikaflex-11 FC formula. This latest Purform® generation radically raises the bar. It provides faster curing speeds, dramatically enhanced outdoor weathering profiles, improved thixotropic handling, and an exceptionally safe environmental footprint that complies with rigorous green building protocols.

When exposed to ambient humidity, Sikaflex-11 FC undergoes a moisture-curing reaction, transforming from a creamy, ultra-smooth, non-sagging paste into a highly resilient, rubber-like skin with a high tear resistance profile. Whether you are sealing vertical expansion joints in high-rise concrete frameworks along Upper Hill, fixing decorative skirting boards in a residential project in Kilimani, or structural seam-sealing on steel warehouse panels in the Industrial Area, this premium mortar provides an unyielding, watertight grip that never cracks, shrinks, or hardens over time.

At Startcore Ventures Limited, we understand that project safety, performance compliance, and structural longevity rely entirely on material authenticity. Counterfeit and gray-market building chemicals lead to adhesive bond failure, leaks, and costly callbacks. That is why we work tirelessly to supply 100% genuine, batch-certified Sika Kenya products directly to your residential renovation or commercial site. Purchase your Sika Sikaflex®-11 FC Purform Grey from us today at the transparent, business-friendly price of KES 1,800 Inclusive of VAT, and elevate the quality of your engineering craft.

💎 CORE ADVANTAGES & KEY BENEFITS

• Dual-Action Engineered Versatility: Eliminates the need to purchase separate layout items for sealing and bonding jobs. It functions flawlessly as both a heavy-duty structural adhesive and a flexible expansion joint sealer.
• Next-Gen Purform® Polyurethane Matrix: Formulated with an ultra-low diisocyanate monomer content (below 0.1% by weight). It minimizes chemical exposure for application teams and completely waives the mandatory hazardous safety training requirements mandated under European REACH regulations.
• ±25% Dynamic Movement Capability: Certified according to international ISO and EN standards to accommodate a continuous total structural deformation profile of 25% without experiencing cohesive cracking or adhesive clean-peel delamination from structural boundaries.
• Advanced Non-Sag Thixotropy: Features an impressive 0 mm sag flow rating under ISO 7390 protocols. This allows technical crews to gun the compound into wide vertical joints and ceiling junctions overhead without experiencing running or messy dripping.
• Wide Primerless Bonding Profile: Exhibits deep mechanical and chemical adhesion onto all standard building materials, including cured concrete, stone, brick masonry, glazed ceramics, structural metals, aluminum, hard plastics, timber, and cured epoxy coatings.
• High Mechanical Tear Resistance: Boasts a tear strength profile of 8 N/mm, nearly double that of standard MS polymers or consumer-grade silicone sealants. This makes it resistant to puncture damage, high-velocity foot traffic abrasion, and structural shear.
• Rapid Moisture-Curing Track: Features an accelerated skin-forming window of approximately 50 to 70 minutes, curing to a deep 3 to 4 mm thickness within the first 24 hours under standard atmospheric states.
• Weatherproof, Non-Corrosive Shield: Highly resilient against UV breakdown, temperature swings, thermal stress, and moisture. It provides a completely non-corrosive curing environment that is safe for bare steel, iron rebar, and sensitive electronics.
• Over-Paintable Elastic Skin: Once fully cured through its depth, the elastic skin can be painted over with water-based, oil-based, or acrylic coating systems to achieve seamless architectural color matches across facades.

📊 CRITICAL TECHNICAL SPECIFICATIONS DATA TABLE

To support project planners, structural engineers, and quantity surveyors during the material submittal phase, here is the complete technical data profile for Sikaflex®-11 FC Purform Grey:

Technical Performance Metric Testing Standard / Protocol Certified Specification Value

Chemical Base Compound | Purform® Polyurethane Technology | Moisture-Curing Polyurethane Matrix
Color Finish Profile | Visual Inspection | Concrete Grey
Density (Uncured Paste) | ISO 1183-1 | ~1.35 kg/Liter
Sag Flow Properties | ISO 7390 (20 mm Profile) | 0 mm (Zero Vertical Sagging)
Skin-Formation Window | Sika CQP 019-1 (23°C / 50% r.h.) | ~50 to 70 Minutes
Full Chemical Curing Rate | Sika CQP 049-2 (23°C / 50% r.h.) | ~3.5 to 4.0 mm per 24 Hours
Dynamic Movement Capability | ISO 11600 / EN 15651-1 | ± 25% (Class 25HM Compliance)
Shore A Hardness | ISO 868 (After 28 Days Curing) | ~32 to 37
Tensile Ultimate Strength | ISO 37 Specification | ~1.5 N/mm²
Secant Tensile Modulus | ISO 37 (At 100% Elongation) | ~0.60 N/mm²
Elongation at Break Matrix | DIN 53504 Testing Track | 400% Ultimate Structural Elongation
Tear Growth Resistance | ISO 34 Matrix | ~8.0 N/mm (High Toughness)
Service Temperature Range | Lab Mechanical Aging Tests | From -40°C up to +80°C
Application Temperature Limits | Ambient Construction Vectors | Minimum +5°C / Maximum +40°C
VOC Emissions Rating | GEV-EMICODE / French VOC | EC1 Plus (Ultra-Low Indoor Emissions)
Food Contact Certification | ISEGA Migration Standards | Approved for Food-Handling Zones

🛠️ EXTENSIVE APPLICATION MATRIX & FIELD USES

The extreme mechanical performance and high flexibility of Sika Sikaflex®-11 FC Purform Grey make it an indispensable asset across structural engineering, interior fit-outs, and heavy infrastructure projects:

1. Structural Joint Sealing (Vertical and Horizontal)

• Concrete Expansion Joints: Sealing control joints, construction breaks, and movement channels in concrete floor slabs, runways, warehouse bays, and multi-deck car parks.
• Facade Joint Containment: Filling gaps between pre-cast concrete facade panels, external brickwork, and curtain wall boundaries to block rainwater entry.
• Parapet and Balcony Seals: Sealing junction perimeters on exposed flat roof parapets, balcony drainage edges, and terrace retaining barriers.
• Window and Door Frame Caulking: Sealing perimeter joints around external window frames and door assemblies made of timber, aluminum, or uPVC.

2. High-Strength Elastic Structural Bonding

• Interior Fit-Out Elements: Bonding skirting boards, wooden baseboards, decorative crown moldings, door sills, and step-tread nosings directly to plastered walls or screeds.
• Cladding and Cover Panel Fitting: Mounting lightweight acoustic ceiling tiles, insulation panels, protection sheets, and wall panels without visible mechanical anchors.
• Roof Component Integration: Fixing clay or concrete roof tiles, flashing pieces, metal valley gutters, and rainwater downspout clips.
• Metal & Ventilation Fabrication: Sealing and bonding riveted lap joints, ventilation ducts, high-vacuum air conditioning trunks, and utility access panels.

3. Specialty Infrastructure Sealing

• Water Containment Frameworks: Sealing non-potable water reservoirs, wastewater settlement tanks, irrigation culverts, and structural drainage channels.
• Food Processing Environments: Safe for use in commercial kitchens, dairy processing units, cold storage rooms, and breweries due to its certified ISEGA food-contact certification.

📐 JOINT DESIGN, DIMENSIONING, AND COVERAGE CALCULATION

When utilizing Sikaflex-11 FC as a joint sealant, the joint width must be engineered to accommodate the movement capability of the sealant. As a universal engineering rule, the joint width must be greater than 10 mm and less than 40 mm.

Standard Depth-to-Width Structural Ratios:

• For joints less than 10 mm wide: Typically used for crack control, a 1:1 width-to-depth ratio is applied.
• For joint widths between 10 mm and 20 mm: A minimum depth of 10 mm must be maintained.
• For joint widths greater than 20 mm: A 2:1 width-to-depth ratio must be maintained (e.g., a joint 30 mm wide must have a sealant depth of exactly 15 mm).

Complete Yield Coverage Chart (per 300 ml Cartridge):

Joint Width (mm)Joint Depth (mm)Joint Length per 300 ml Cartridge (Meters)Joint Length per 600 ml Sausage (Meters)
5 mm | 5 mm | ~12.0 Meters | ~24.0 Meters
10 mm | 10 mm | ~3.0 Meters | ~6.0 Meters
15 mm | 10 mm | ~2.0 Meters | ~4.0 Meters
20 mm | 10 mm | ~1.5 Meters | ~3.0 Meters
25 mm | 12 mm | ~1.0 Meter | ~2.0 Meters
30 mm | 15 mm | ~0.6 Meters | ~1.2 Meters

When Used as an Adhesive (Triangular Bead Method):

When applying the product as a structural bonding agent, strip application is recommended. One 300 ml cartridge yields approximately 100 dabs (each 3 cm diameter x 1 cm thickness) or spreads to cover roughly 0.6 m² of full surface area when utilizing a notched trowel setup.

📝 STEP-BY-STEP APPLICATION INSTRUCTIONS FOR LOGISTICS TEAMS

To ensure your installation complies with Sika’s global warranty standards and achieves its rated 400% elongation performance, your site crew must closely follow this installation guide:

Step 1: Substrate Preparation & Cleaning

• Decontamination: Boundaries must be structurally stable, solid, dry, and completely clean. Remove all dust, concrete laitance, surface slurry, loose paint, release oils, wax, or residual waterproofing elements.
• Mechanical Abrading: For non-porous surfaces like polished steel or glazed ceramics, lightly abrade with a wire brush or emery pad to create a mechanical key. Clean porous concrete walls using compressed air or a industrial vacuum.
• Moisture Content Check: Concrete substrates must be fully cured (minimum 28 days old) with a residual moisture level under 4% to prevent moisture-trapping bubbles.

Step 2: Joint Backing Rod Installation

• To prevent three-sided adhesion—which restricts the sealant’s ability to flex and causes early joint failure—insert a closed-cell, polyethylene foam Backing Rod into the joint channel.
• Select a backing rod diameter approximately 25% larger than the width of the joint to ensure a snug friction fit. Press it down uniformly using a blunt tool to the required design depth.

Step 3: Masking and Priming Frameworks

• Masking Tape Application: Apply high-quality masking tape along both edges of the joint lines before gunning. This keeps the surrounding stone, tile, or concrete face perfectly clean and ensures a professional finish.
• Priming Rules: Sikaflex-11 FC exhibits excellent primerless adhesion to most clean surfaces. However, for joints subjected to continuous water immersion or heavy foot traffic, apply Sika® Primer-3 N onto porous edges using a clean brush, or Sika® Aktivator-205 onto non-porous metals. Allow primers to flash-off completely for 30 minutes before sealing.

Step 4: Gunning and Extrusion Mechanics

• Cartridge Preparation: Pierce the protective steel seal at the top of the cartridge thread, screw on the plastic application nozzle, and cut the tip at a 45-degree angle to match the joint width.
• Loading: Insert the cartridge or sausage into a professional manual or pneumatic caulking gun frame.
• Extrusion Technique: Hold the caulking gun at a 45-degree angle and firmly extrude Sikaflex-11 FC into the joint gap. Ensure complete contact with both sides of the channel to eliminate hollow voids or air pockets.

Step 5: Professional Tooling and Finishing

• Smoothing out the Bead: Tooling must be completed within 45 minutes of extrusion, well before the product begins to form its initial skin.
• Tooling Agent: Use a specialized smoothing tool lightly dipped in a neutral, non-staining tooling liquid or mild soapy water solution. Press the sealant firmly against the joint edges to achieve a smooth concave surface finish.
• Tape Removal: Immediately strip off the masking tape while the sealant remains fresh and wet. This leaves a perfectly straight, clean edge line.

Step 6: Adhesive Bonding Application

• When bonding components, apply Sikaflex-11 FC in triangular beads, strips, or spots spaced a few centimeters apart on the prepared backing surface.
• Press the component firmly into place with a sliding motion to distribute the adhesive bed evenly. If dealing with heavy fixtures or vertical claddings, provide temporary mechanical support (such as props or masking tape bands) during the initial 24-hour curing window.

Step 7: Clean-Up and Curing Restrictions

• Clean all hands, application tools, and mixing keys immediately using Sika® Cleaner-208 or heavy-duty industrial cleaning wipes.
• Once fully cured, the tough polyurethane material cannot be dissolved and must be removed mechanically using a sharp blade or scraper.
• Protect freshly completed joint sections from rain, dust tracking, high winds, and structural foot traffic for at least 24 to 48 hours.

🔗 INTEGRATED RELATED PRODUCTS FROM STARTCORE VENTURES

To achieve professional-grade results across your project, combine your Sikaflex order with these performance-matched products available from Startcore Ventures:

           +-----------------------------------------------+

           |     CONCRETE REPAIR & SURFACE PREPARATION     |
           |             Mapei Mapegrout T60               |
           +-----------------------+-----------------------+
                                   |
                                   v
           +-----------------------------------------------+

           |         SUBSTRATE PRIMING & CLEANING          |
           |            Sika Aktivator / Primer            |
           +-----------------------+-----------------------+
                                   |
                                   v
           +-----------------------------------------------+

           |          PRIMARY JOINING & BONDING            |
           |       Sika Sikaflex-11 FC Purform Grey        |
           +-----------------------+-----------------------+
                                   |
                                   v
           +-----------------------+-----------------------+

           |                                               |
           v                                               v
+------------------------+                      +------------------------+

| UNDER-TILE BARRIER     |                      | SYSTEM FLEXIBILITY     |
|   Mapei Mapelastic     |                      |   Mapei Adesilex P7    |
+------------------------+                      +------------------------+

1. Concrete Repair & Substrate Prep Mortars

• Mapei Mapegrout T60 Concrete Repair Mortar: A fiber-reinforced, sulfate-resistant mortar designed for rebuilding spalled joint edges, filling deep concrete voids, and restoring honeycomb patches prior to installing joint backing rods and Sikaflex sealants.

2. High-Performance Tile Adhesives

• Mapei Adesilex P7 Grey (25 kg Bag): A polymer-modified, high-performance cementitious adhesive with zero vertical slip. Perfect for setting porcelain and vitrified tiles on floor systems adjacent to your Sikaflex expansion joints.
• Mapei Adesilex P7 White (25 kg Bag): Formulated specifically for installing white marbles, glass mosaics, and natural stones safely without stone staining or color bleeding issues.

3. Elastomeric Waterproofing Systems

• Mapei Mapelastic Smart Two-Component Kit: An ultra-flexible cementitious waterproofing slurry ideal for under-tile wet areas, balconies, and swimming pools. Use it to waterproof the entire slab surface up to the joint edges before sealing the active movement gap with Sikaflex-11 FC.
• Mapei Mapelastic Foundation High-Pressure Waterproofing Kit: Formulated to resist positive and negative hydrostatic ground water pressure. Excellent for waterproofing basement structures, retaining systems, and subterranean foundations.

🔒 PACKAGING, STORAGE AND SHELF LIFE INTEGRITY

• Retail Unit Packaging: Supplied in airtight 300 ml aluminum/plastic cartridges (packed 12 units per carton) or professional 600 ml cylindrical foil sausages (packed 20 sausages per carton).
• Color Uniformity: Batch code matched to ensure uniform concrete grey color consistency across large, multi-cartridge joints.
• Storage Warehouse Protocol: Must be stored off the ground on raised shelves or pallets in dry, clean, climate-controlled warehouse settings. Keep storage temperatures consistently between +5°C and +25°C. Protect the cartridges from direct midday solar heat, frost, freezing, and dampness.
• Shelf Life: Maintains a stable 15-month shelf life from the date of factory production when kept unopened and undamaged within original sealed storage packs. Always check the batch date code printed on the cartridge crimp before field application.

🛒 ORDER GENUINE SIKAFLEX®-11 FC FROM STARTCORE VENTURES TODAY

Avoid joint failures, early cracking, and building leaks by using authentic, brand-verified sealing products. Startcore Ventures Limited is your premier partner for construction chemicals and structural components across Kenya.

Why Procurement Teams Choose Startcore:

• Direct Manufacturer Channel: We eliminate unregulated third-party brokers, ensuring you receive 100% genuine Sika material with current batch dates and maximum shelf life.
• Transparent Corporate VAT Invoicing: Our KES 1,800 price fully includes 16% corporate VAT documentation, making project bookkeeping straightforward for commercial contractors.
• Fast Logistics Nationwide: We provide rapid dispatch from our centrally located Nairobi hub straight to your project site or workshop anywhere in Kenya.

Reach Out to Our Sales & Engineering Desk

Ready to purchase or need a bulk price quotation for a large commercial build? Get in touch with our technical sales team today:

• 📞 Phone Hotline Support: +254 705 544 817
• 💬 WhatsApp Commercial Chat: Chat Directly with Startcore Specialists
• 📍 Head Showroom: Bhavesh Centre, Mezzanine Floor, Ngara Road, Nairobi, Kenya
• ✉️ Email Project Inquiries: info@startcore.co.ke
• 🌐 Official Online Store: www.startcore.co.ke

If you want to proceed with this order, let me know:

• The total number of joints or linear meters you need to seal so we can estimate cartridge counts.
• Whether your project requires matching backing rods or specialty primers for heavy-traffic zones.

Our team can compile a complete, itemized delivery package for your project site.