Proflex Ultra 399 is a high-performance, deformable cementitious adhesive, enhanced with polymer and fiber modification for superior bond strength, slip resistance, and extended open time. It is ideal for fixing vitrified tiles, large-format tiles, natural stones, and for use in heavy foot-traffic commercial environments.

Designed for both internal and external applications, it performs exceptionally well on substrates exposed to deformation or vibrations. The formulation allows for the creation of flexible, deformable adhesive beds up to 15 mm thickness, ensuring long-lasting durability and reliable installation performance.

Consumption
Approx. 1.2 kg/ m2 per mm of thickness.
Coverage will vary depending on the trowel notch size, type and size of the tile, and the smoothness and evenness of the substrate

Suitable Substrates

• Concrete
• Cement screeds and plasters
• Gypsum plaster
• Drywall systems
• Aerated concrete blocks
• Fiber cement boards
• Heated floors and walls (underfloor/embedded heating systems)
• Deformable or vibration-prone substrates

Features / Advantages

• Fiber-reinforced formulation providing superior strength and flexibility
• High tensile and shear adhesion for long-lasting performance
• Suitable for both indoor and outdoor applications
• Excellent sag resistance—ideal for vertical surfaces and heavy tile installation
• Extended open time and smooth, easy trowelability
• Compliant with EN 12004: C2 TE S1
• Allows application thickness up to 15 mm
• Low VOC formulation for a healthier working environment
• Effectively accommodates substrate movements and deformation on critical surfaces

Approvals
As Per IS 15477:2019 – Type 3
C2 TE S1 As Per EN 12004