Optimix TA328S C2TE S1 Anti-Efflorescence Tile Adhesive

Product Overview

Optimix TA328S is a high-quality polymer-modified cementitious tile adhesive featuring special additives that inhibit free lime migration, thereby reducing efflorescence. It is easy to mix and apply, with good open time and working time. Its high polymer content provides enhanced flexibility and bond performance, making it the ideal choice for large-format tiles subject to loading or impact.

Key Features

• Enhanced efflorescence resistance — special additives inhibit free lime migration, reducing white staining
• High bond strength and flexibility — high polymer content delivers outstanding bond and shear bond strength
• Suitable for all tile sizes — including large and heavy tiles, ideal for load-bearing or impact-prone applications
• Grey or white available — to match different tile and stone colours
• Suitable for both thin-bed and back-buttering application methods
• Good thixotropy with extended working time
• Waterproofing and moisture-resistant properties
• Lower slurry density for easier, less strenuous application
• Locally produced in Hong Kong — consistent quality, contributes to BEAM Plus green building credits
• Low volatile organic compounds (VOC) — compliant with HKEPD regulations (per manufacturer)
• Tested with no visible efflorescence (per manufacturer)
• Compliant with Waterworks Regulations Schedule 2 for potable water contact (per manufacturer)

Applications

• Interior and exterior wall and floor tiling (all sizes)
• Large and heavy tile installations
• Emergency vehicular access floor tiling
• Natural stone, terrazzo, engineered tiles, homogeneous tiles and paper-faced mosaics
• Modular Integrated Construction (MiC) projects
• Outdoor or damp environments prone to efflorescence

Limitations

• Cannot be applied directly onto gypsum-based surfaces — proper interface treatment is required
• If significant substrate or tile movement is anticipated, or for industrial applications, specialist consultation is required
• Has waterproofing and moisture-resistant properties, but where waterproofing is the primary concern (e.g. water storage, damp-proofing), use in conjunction with dedicated waterproofing products

Packaging

Important Notes

• Clean the substrate before application — remove all dust, oil and contaminants
• Product is alkaline — wear protective gloves and eye protection during use
• Store in a cool, dry indoor location away from direct sunlight before use
• After tiling, grouting with Optimix TG410E High-Performance Anti-Mould Grout is recommended
• For detailed application methods, coverage rates and technical parameters, please refer to the official product data sheet

FAQ

What is the difference between TA328S and TA328?

TA328S is the efflorescence-resistant enhanced version of TA328, containing special additives that inhibit free lime migration to effectively reduce white staining. Both share the same bond strength and flexibility grade (C2TE S1), but TA328S is specifically suited for outdoor or damp environments prone to efflorescence.

When do I need efflorescence-resistant tile adhesive?

When white crystalline deposits tend to appear in tile joints or on tile surfaces — typically more noticeable in outdoor environments, humid areas, or when using light-coloured tiles. TA328S effectively reduces this issue.

Is TA328S suitable for large-format floor tiles?

Yes. TA328S shares the same grade as TA328, specifically designed for large and heavy tiles with high bond strength and flexibility. It is the ideal choice for large-format tiles subject to loading or impact.

How much does TA328S cost?

Please contact us via WhatsApp for the latest Optimix TA328S pricing. We offer in-store pickup at our Mong Kok location and delivery across Hong Kong.