FOX FLEXMORTAR® FX116 | C2TES2 Super Flexible S2 Tile, Granite & Marble Adhesive
FOX FLEXMORTAR® FX116 – Super Flexible Adhesive for Ceramic Tiles, Granite & Natural Stone
Product Description
FOX FLEXMORTAR® FX116 is a cement- and polymer-based adhesive designed to deliver superior bonding performance and long-lasting durability for ceramic tiles, granite, porcelain, and natural stone. Featuring S2 high flexibility, reduced slip, and extended open time, it is ideal for demanding applications where movement and thermal stresses occur.
The product complies with TS EN 12004-1:2017 and is classified as:
C2TES2
Suitable for both indoor and outdoor applications on horizontal and vertical surfaces, FOX FLEXMORTAR® FX116 withstands substrate movement, sudden temperature fluctuations, and vibration.
Classification & Flexibility
- C2 – Improved high-performance cementitious adhesive
- T – Reduced slip
- E – Extended open time
- S2 – Highly deformable (super flexible)
Its S2 flexibility provides reliable bonding performance in areas exposed to vibration, structural movement, and significant temperature variations.
Application Areas
FOX FLEXMORTAR® FX116 is suitable for:
- Indoor and outdoor horizontal and vertical applications
- Concrete, screed, cement render, and cement-based substrates
- Bathrooms, balconies, kitchens, and other wet areas over waterproofing membranes
- Installation of ceramic tiles, porcelain tiles, granite, and natural stone
- Tile-over-tile renovation and refurbishment projects
- Swimming pools
- Turkish baths (Hammams)
- Water tanks
- Industrial flooring
- Cold storage facilities
- Areas exposed to heavy pedestrian and vehicle traffic
Key Advantages
- Requires only water for mixing
- Extended working time reduces labor and installation time
- Non-slip performance on vertical surfaces
- Easy and comfortable application
- Highly flexible and resistant to vibration and thermal movement
- Resistant to freeze-thaw cycles
- Non-shrinking formulation
- S2 flexibility effectively absorbs stresses caused by sudden temperature changes
Technical Specifications
Material Composition
Special cement, mineral fillers, and polymer additives
Physical Properties
- Density: 1.75 ±0.05 kg/L
- Color: Grey / White
Performance (EN 12004-2:2017)
- Tensile Adhesion Strength: ≥1.0 N/mm²
Application Data
- Application thickness: 3–10 mm
- Application temperature: +5°C to +30°C
- Service temperature: -20°C to +80°C
- Maturation time: 3–5 minutes
- Pot life: 1–2 hours
- Open time: 30 minutes
- Deformability: ≥5.0 mm (S2)
- Slip: ≤0.5 mm
- Ready for foot traffic: After 24 hours
- Grouting time: After 24 hours
- Reaction to fire: Class A2
Application Procedure
1. Surface Preparation
Cement-Based Substrates
The substrate must be sound, level, clean, and free from dust, dirt, grease, and loose particles.
Areas requiring repair should be repaired using INNO-CRETE Series repair mortars before installation.
Highly Absorbent Surfaces
Highly absorbent substrates should be primed with FOX PRIMERA® FL220. Allow the primer to dry for a minimum of 8 hours before tiling.
Wood-Based Panels
- Moisture content must not exceed 10%
- Secure the panels firmly with screws
- Fill expansion joints using FOX PURSEAL PS600 Polyurethane Sealant
2. Mixing
Pour the recommended amount of clean water into a suitable mixing container.
Gradually add FOX FLEXMORTAR® FX116 while mixing mechanically at 400–600 rpm for 3–4 minutes until a homogeneous consistency is achieved.
Allow the mixture to mature for 3 minutes, then remix for 1 minute before use.
Mixing Ratios
Grey (25 kg): 7.75 ±0.25 L water
White (25 kg): 8.25 ±0.25 L water
3. Application
Apply an approximately 1 mm contact layer using the flat side of the trowel.
Within the 30-minute open time, comb the adhesive in one direction using the notched side of the trowel.
For uneven tiles or natural stone, apply an additional 1 mm back coat to the rear of each tile to ensure full coverage.
Press each covering firmly into the adhesive to achieve complete contact.
Leave suitable grout joints according to tile size.
Grouting may begin approximately 24 hours later using INNO-FIX Series grouts.
4. Open Time Check
Perform the finger test to verify the adhesive's workability.
- If adhesive transfers to your finger, installation can continue.
- If no adhesive transfers, the open time has expired and fresh adhesive must be applied after removing the old material.
Consumption
Consumption varies according to the notch size of the trowel.
Approximate consumption: 3.5–8.0 kg/m²
Packaging, Storage & Shelf Life
Packaging
25 kg polyethylene-reinforced kraft paper bag
Storage
Store in a cool, dry, frost-free environment.
For long-term storage, pallets should not be stacked.
Shelf Life
12 months when stored between +5°C and +30°C in unopened original packaging.
Once opened, the product should be used within one week.
Important Notes
- Apply only when substrate and ambient temperatures are between +5°C and +30°C.
- Do not apply during extremely hot, rainy, or windy weather.
- Exterior installations should be protected from direct sunlight, rain, wind, and frost during the first 24 hours.
- Working and curing times vary depending on temperature and humidity.
Frequently Asked Questions (FAQ)
What classification does FOX FLEXMORTAR® FX116 have?
It complies with TS EN 12004-1:2017 and is classified as C2TES2.
Does it slip on vertical surfaces?
No. Its reduced-slip (T) formulation prevents movement on vertical applications.
What is the open time?
Approximately 30 minutes.
When can grouting begin?
Grouting can be carried out after approximately 24 hours.
Can it be used in cold storage rooms or swimming pools?
Yes. FOX FLEXMORTAR® FX116 is specifically designed for demanding environments including cold storage facilities, swimming pools, industrial flooring, and other high-performance applications.
FOX FLEXMORTAR® FX116 is a professional-grade super flexible adhesive engineered to provide reliable, long-lasting bonding performance in demanding environments exposed to vibration, structural movement, and temperature fluctuations.