Roff T20 Extrofix Ultra Tile Adhesive, White, 20 Kg Bag

Product Highlights

• Perfect for Large Format Tiles: Specifically designed for tiles 60cm or larger with extended open time
• Premium White Formula: Prevents shadow marks and discoloration on light-colored and transparent tiles
• Enhanced Flexibility: Highly polymer-modified formula accommodates substrate movement and thermal variations
• Extended Open Time: 30-40 minutes working time allows precise tile placement and adjustment
• Excellent Slip Resistance: Non-skid properties ensure tiles remain in place during installation on vertical surfaces
• Superior Bond Strength: High-polymer modification creates stronger adhesion to challenging substrates
• Versatile Applications: Suitable for marble, natural stone, glass tiles, ceramic, vitrified tiles, and slabs
• Indoor & Outdoor Use: Performs excellently in both wet and dry areas including commercial projects
• Coverage: Approx. 5-6 m² per 20kg bag at 3mm thickness (using 6mm × 6mm notch trowel)

Packaging Size: 20 Kg | Type: Powder | Colour: White

Product Description

What Makes T20 Extrofix Ultra Special

Roff T20 Extrofix Ultra Adhesive is a high polymer-modified, highly flexible tile adhesive engineered specifically for premium applications involving large format tiles, natural stones, and decorative elements. Unlike standard adhesives, T20 combines superior slip resistance with extended open time and excellent bond strength—making it the professional choice for demanding installations.

The white formulation is particularly advantageous for light-colored and transparent tiles, as it prevents the shadow marks and discoloration that can occur with grey adhesives. This makes T20 the preferred option for marble cladding, glass tile installations, and high-end residential projects where aesthetics matter.

Polymer-Modified Formula for Premium Performance

The advanced polymer modification in Roff T20 delivers several key advantages:

• Increased Flexibility: The polymer additives allow the adhesive to accommodate substrate movement, thermal expansion, and contraction without cracking or losing bond
• Superior Adhesion: Enhanced bonding properties ensure secure attachment to challenging surfaces including existing tiles, stone, and concrete
• Water Resistance: Polymer modification improves water repellence, making it suitable for both wet and dry applications
• Extended Workability: 30-40 minute open time provides professionals ample opportunity for precise alignment and adjustment before initial set

Ideal Applications for Large Format Installations

1. Marble & Natural Stone Cladding: T20 is specifically formulated for marble slabs, limestone, granite, and travertine where flexibility and bond strength are critical. The white color prevents visibility of the adhesive through semi-translucent stones.

2. Glass Tile & Mosaic Applications: Perfect for decorative glass tiles, glass mosaic, and glass block installations where the white adhesive ensures a clean, professional appearance without color bleeding through.

3. Large Format Ceramic & Vitrified Tiles: Ideal for 60cm×60cm tiles, 80cm×80cm slabs, and larger ceramic or porcelain tiles on both walls and floors. The extended open time accommodates larger surface areas without adhesive skinning over.

4. Slim Panel & Cladding Systems: T20 provides excellent performance with lightweight cladding panels and thin stone veneers, handling the stresses of weight and movement without premature failure.

5. External Facades & Commercial Projects: Engineered for outdoor use, including balconies, terraces, external cladding, and commercial flooring where durability under sun exposure and temperature fluctuations is essential.

6. Tile-on-Tile Applications: When installing new tiles over existing tile surfaces (common in renovations), T20's strong polymer-modified bond ensures adhesion to non-porous substrates.

Bangalore Climate Performance

In Bangalore's warm, humid climate, T20 performs exceptionally well:

• Monsoon Season (June-September): Higher humidity (70-90%) requires 24-36 hours full curing time. Allow extended drying between grouting and water exposure.
• Summer Performance: Fast surface drying in heat (March-May) makes T20 ideal, but ensure substrate is not overly porous to prevent moisture loss. Water the substrate lightly before application.
• Humidity Management: White adhesive's water-resistant polymer modification prevents moisture penetration and mold growth in bathrooms and kitchens typical of Bangalore homes.
• Temperature Stability: Polymer flexibility accommodates Bangalore's daily temperature variations (15-35°C), preventing adhesive cracking.

Technical Specifications

Tile & Material Compatibility

• Ceramics: All ceramic tile types (glazed, unglazed, semi-vitrified)
• Vitrified Tiles: Fully vitrified, porcelain, and high-strength tiles (low porosity)
• Natural Stones: Marble, limestone, granite, travertine, slate, sandstone
• Glass Tiles & Mosaics: Decorative glass, glass block, frosted glass (white adhesive prevents discoloration)
• Large Slabs: Thin stone veneers, thin porcelain slabs, and ultra-large format tiles
• Specialty Materials: Terracotta, quarry tiles, pavers, precast terrazzo

Why Choose White Over Grey Adhesive

Professional Application Tips

Surface Preparation:

• Clean substrate thoroughly; remove dust, loose plaster, grease, and algae
• Ensure substrate is structurally sound and not excessively porous
• For porous surfaces (plaster, concrete), dampen lightly before application to prevent premature water loss
• Existing tiles must be mechanically roughened or primed for optimal adhesion

Mixing:

• Mix 1 kg adhesive with 250-300 ml water using a drill mixer for 2-3 minutes
• Allow 5 minutes slaking time, then remix briefly before application
• Achieve a thick, creamy consistency that spreads without sagging on vertical surfaces
• Prepare only the amount you can use within 30-40 minutes (open time)

Trowel Application:

• Use 6mm × 6mm notch trowel for large format tiles (60cm and above)
• Apply toothed side at 45° angle for consistent ridging and full coverage
• Aim for 80-90% coverage on tile back; achieve 100% coverage on substrate
• Replace trowel lines with a new application if adhesive begins to skin over

Tile Placement:

• Press firmly and twist tiles to set them in place; don't slide tiles on adhesive (breaks bond)
• Use spacers (2-3mm) to maintain uniform joint widths for professional appearance
• Check alignment frequently with a level; T20's extended open time allows corrections within 30-40 minutes
• For heavy marble/stone, use additional support (props, boards) to prevent tile slippage

Curing Timeline (Bangalore Climate Adjusted)

Note: Monsoon humidity (70-90%) significantly extends curing time. Ensure adequate ventilation and avoid water exposure until fully cured. In summer heat, prevent rapid drying by misting adhesive with water in first 24 hours.

Frequently Asked Questions

1. When should I use T20 instead of standard grey adhesives like T03?

Use T20 for any visible light-colored tiles (white, cream, beige, light grey) or transparent materials (glass, marble). The white color prevents shadow marks and discoloration that compromise aesthetic appeal. T20 is also superior for large format tiles due to extended open time and flexibility. For standard grey ceramic tiles in utility areas, T03 is more economical.

2. What's the difference between T20 Extrofix Ultra and T04 Vitro Fix?

T20 (Extrofix Ultra): High polymer-modified, extended open time (30-40 mins), best for large format tiles, marble, natural stones, outdoor use, and demanding applications. Price: ₹1,265/bag.

T04 (Vitro Fix): Low POC formula, best for small-to-medium glass tiles, vitrified tiles, light internal use. Shorter open time. Price: ₹672/bag. Choose T04 for budget-conscious glass tile projects; T20 for premium marble, outdoor, or large slab installations.

3. Can I use T20 for tile-on-tile applications?

Yes. T20's polymer-modified formula has excellent adhesion to non-porous tile surfaces. Ensure existing tiles are clean and mechanically roughened (use sandpaper or wire brush). This is common during bathroom/kitchen renovations in Bangalore homes.

4. How does humidity affect T20 curing in Bangalore?

High humidity (70-90% during monsoon) significantly extends curing times. Plan for 30-36 hours initial set instead of 6-8 hours. Wait 72 hours before grouting. Ensure good ventilation and avoid exposing tiles to water for 10-14 days during monsoon. Polymer modification helps resist moisture infiltration, but full strength requires adequate drying time.

5. What coverage should I expect from a 20kg bag?

Approximately 5-6 m² at 3mm bed thickness using a 6mm × 6mm notch trowel. Large format tiles (60cm+) and marble slabs may require slightly thicker beds (3.5-4mm), reducing coverage to 4-5 m². Always account for substrate irregularities and tile size variations.

6. Is T20 suitable for swimming pools and water features?

Yes. T20's water-resistant polymer modification makes it excellent for pools, fountains, saunas, and spas. However, for specialized pool applications, consider dedicated pool adhesives or epoxy-based options for even greater chemical resistance. T20 is suitable for standard residential pool tiling.

7. Can I use T20 on exterior balconies and terraces in Bangalore?

Absolutely. T20 Extrofix Ultra is specifically engineered for external cladding, balconies, and terraces. Its flexibility accommodates thermal expansion/contraction from Bangalore's temperature variations (15-35°C). The white color is also aesthetically superior for exterior applications. Ensure proper substrate preparation and curing time before exposing to monsoon rains.

8. What's the water-to-adhesive mixing ratio?

Approximately 1:0.25-0.30 (1kg adhesive to 250-300ml water). Adjust based on desired consistency—thicker for vertical surfaces, slightly thinner for floors. Mix thoroughly for 2-3 minutes. Allow 5-minute slaking time, then remix briefly. Avoid adding water to an already-mixed batch; remix instead.

9. How do I prevent tiles from slipping on vertical surfaces with T20?

T20's non-skid properties help, but proper application is key: Apply thick ridges with the notched trowel, press firmly, and consider using support props for heavy marble/stone tiles. Allow adhesive to partially set (2-3 hours) before installing heavy tiles. Don't slide tiles on the adhesive—press and twist to set. Using slightly thicker adhesive consistency helps on vertical surfaces.

10. What grout should I pair with T20 adhesive?

Roff offers compatible white grouts (Roff Epoxy Grout, Roff Cement-Based Grout in white). For marble and light tiles, white grout complements the aesthetic. For glass tiles, epoxy grout provides superior water resistance. Wait 48-72 hours before grouting (depending on humidity) to ensure adhesive has adequate set strength.

11. Why is T20 more expensive than other adhesives?

The ₹87 premium over T03 reflects superior engineering: higher polymer modification, extended open time, reduced slip on vertical surfaces, and enhanced flexibility for large format tiles. In premium projects (marble cladding, glass installations), T20's guaranteed professional finish justifies the cost difference. The extended workability also reduces installation errors and rework, offsetting the premium through labor efficiency.

12. Is T20 available in grey for aesthetic preference?

T20 Extrofix Ultra is formulated in white to leverage the premium aesthetic advantages. For large format tiles in grey, consider Roff T07 Extrofix (grey version) or T03 VFA (grey). However, grey is not recommended for marble, glass, or light tiles due to visible shadow marks. White is the superior choice for premium applications.

Returns & Exchange Policy

1. Return Within 24 Hours of delivery under the following conditions:
   1. Damaged or defective product.
   2. Wrong or missing product.
2. Product cannot be returned once used.
3. Refer to Refund Policy for details.

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