UltraTech Tilefixo Royal NT White
A white cement-based, C2TE-rated tile adhesive built for white marble and natural stone — so the bond line never shows through the tile.
What is it?
A cement-based, polymer-modified tile adhesive from UltraTech’s TILEFIXO Royal NT range, formulated with white cement so it doesn’t discolour light or translucent stone. Meets Type 3T of IS 15477:2019 and C2TE of EN 12004:2017 / ISO 13007-1:2014.
Where is it used?
Floors and walls, interior and exterior, on cement-based substrates (plaster, concrete, screed) for medium-format ceramic, vitrified, porcelain, glass mosaic and natural stone tiles — including white marble, granite, and submerged applications like pools, water tanks and fountains.
Why use it?
Gives high initial and long-term bond strength without pre-soaking tiles, a workable 30-minute open time for Indian site crews, self-curing so it isn’t dependent on wet curing, and — critically for light stone — a white base that won’t bleed grey undertones through polished or honed marble.
How is it applied?
Mix with 24-27% potable water using a mechanical stirrer, let it mature 2 minutes, remix, then spread with a notch trowel sized to the tile. Fix tiles within 30 minutes of spreading, maintain a 3-12mm bed (minimum 3mm), and back-butter marble or granite on vertical faces.
About UltraTech Tilefixo Royal NT White
UltraTech TILEFIXO Royal NT White sits in the “premium” tier of UltraTech’s Tile & Marble System, one rung below the flexible S1-rated Royal NT Plus but a clear step up from the entry-level VT range. The core chemistry is standard for this class — OPC/white cement blended with graded silica sand and redispersible polymer powders that improve flexibility, water retention and adhesion over the plain sand-cement mortars still used on many smaller Delhi NCR sites. What sets the White variant apart isn’t the binder chemistry so much as the binder colour: because white and light-toned marble, backlit onyx, and pale natural stone are often thin or semi-translucent, a grey cement-based adhesive underneath can visibly dull or grey out the stone face after curing. Using a white-cement formulation avoids that show-through, which is the whole reason this SKU exists alongside the standard grey Royal NT.
On paper the product tests to Type 3T under IS 15477:2019 and C2TE under EN 12004:2017/ISO 13007-1:2014 — the “improved, cementitious, extended open time” classification that most spec consultants in India now default to for anything beyond basic ceramic floor tiling. In practice, that means it holds tensile adhesion above 1.0 N/mm² after water immersion, heat ageing and freeze-thaw cycling, and it’s rated for submerged use in pools, water tanks and fountains, not just conventional wet-area floors and walls. For a Delhi NCR villa or apartment project fixing white marble flooring, wall cladding, or a natural-stone-clad podium, it’s a reasonable default rather than a specialist niche product — provided the tile format and substrate movement stay within what a standard (non-flexible, non-S1) adhesive is built to handle.
The technical insight
The redispersible polymer content is what separates this from a masonry-grade sand-cement mix: it improves deformability and wet-edge working time, which is why the TDS shows a 30-minute open time and adjustable time at 30°C rather than the 10-15 minutes typical of unmodified mortars — useful on hot North Indian afternoons where pot skinning is the usual cause of adhesion failure. The slip figure (0.35-0.45mm against a ≤0.5mm ceiling under both IS and EN test methods) is the number that actually matters for vertical marble cladding: it’s what stops a heavy stone tile sliding down the wall before the adhesive sets, and is one reason back-buttering is specified for granite and marble rather than optional. The white-cement base itself doesn’t change the mechanical performance versus the grey Royal NT — the tensile and shear adhesion figures track closely — its function is purely optical, preventing the substrate-grey from reading through light stone, which is a real and common site complaint when contractors substitute a cheaper grey adhesive under white marble to save cost.
Where it is used
- White marble and light natural stone flooring and wall cladding
- Vitrified, porcelain and ceramic tile fixing on floors and walls
- Glass mosaic tile installation
- Interior and exterior tiling on plaster, concrete and screed substrates
- Submerged applications — swimming pools, water tanks, fountains
- Tile-on-tile relaying over sound, prepared existing floors
- Balcony, terrace and exterior facade tile cladding
- Wet-area tiling — bathrooms, utility areas, podium decks
Key advantages
- No pre-soaking of tiles required, which saves site labour time
- 30-minute open time gives crews a realistic working window in Indian heat
- White cement base prevents grey show-through under light or translucent marble
- Self-curing formulation reduces dependence on wet curing schedules
- Slip resistance of 0.35-0.45mm keeps vertical marble and stone from sagging before set
- Dual compliance — IS 15477:2019 Type 3T and EN 12004/ISO 13007 C2TE — covers both domestic and export-spec requirements
- Rated for submerged use (pools, tanks, fountains), not just standard wet areas
- Single-component, factory-proportioned mix reduces batch-to-batch site error
Limitations & considerations
- Not suitable for flexible substrates — fibrous cement sheet, plasterboard, or timber decking
- Cannot be fixed directly onto metal, glass, plastic, PU waterproofing membranes, or moisture-sensitive stones
- Rated for medium-format tiles and stone; large-format slabs (600x1200mm and above) or heavy stone are better served by the S1-flexible Royal NT Plus
- Tight application windows (30-minute open time, fix within 30 minutes of spreading) demand disciplined crew sequencing, especially in summer
- Work must stop below 5°C or above 50°C substrate/ambient temperature, and direct sunlight during application should be avoided
- Sold only in 20kg bags — no small-pack option for patch repairs or single-room jobs
Selection & best practice
Level the substrate first with UltraTech BASEKRETE on walls or FLOORKRETE on floors if undulation exceeds a few millimetres — don’t try to fix that with extra adhesive thickness. Mix only the manufacturer’s stated 24-27% water by weight with a mechanical stirrer for 2-3 minutes, let it stand 2 minutes to mature, and remix before use; never add water later to “revive” a stiffening batch, since that directly cuts bond strength. Comb the adhesive with a notch trowel sized to the tile format, and always back-butter marble, granite and other natural stone on vertical surfaces to guarantee full contact and avoid the hollow spots that later crack under thermal movement. Use tile spacers for even joints, and grout with UltraTech TILEFIXO STYLE Epoxy Grout for wet or submerged zones rather than a standard cementitious grout. On a first-time white or backlit stone job, lay a sample tile in an inconspicuous area and check for any colour shift once cured before committing the full floor.
Specifications
| Standards Compliance | IS 15477:2019 Type 3T; EN 12004:2017 / ISO 13007-1:2014 Class C2TE |
| Water-Powder Ratio | 24-27% potable water by weight of material |
| Pot Life @ 30°C | 3 hours |
| Open Time @ 30°C | 30 minutes |
| Adjustable Time @ 30°C | 30 minutes |
| Coverage per 20kg Bag | 3.72 sq.m at 6mm notch (lab conditions; site coverage varies with substrate) |
| Bulk Density | 1400-1500 kg/m³ |
| Adhesive Bed Thickness | 3-12mm (minimum 3mm) |
| Pack Size / Shelf Life | 20kg bags; 12 months from date of manufacture, stored cool and dry |
Industry use cases
Residential (Delhi NCR villas/apartments)
Fixing white marble or light natural stone flooring and feature wall cladding where a grey adhesive would visibly dull the stone.
Hospitality
Lobby floors and reception wall cladding in natural stone or large-format vitrified tile, where surface finish quality is directly visible to guests.
Commercial/institutional
Vitrified and porcelain tile flooring in offices, showrooms and retail spaces on prepared cement screed.
Wet and wellness zones
Submerged tiling for swimming pool decks, water features and fountains, paired with epoxy grout for the joints.
Renovation
Tile-on-tile relaying over sound existing floors once the old surface is de-glossed and mechanically keyed.
Frequently asked questions
What’s the actual difference between Tilefixo Royal NT and Royal NT White?
Can I use this for large-format tiles like 600x1200mm vitrified slabs?
Is it actually suitable for swimming pool tiling?
How much coverage do I get from one 20kg bag?
Do I need to soak the tiles before fixing?
How long before I can walk on or grout the tiled area?
How we position UltraTech Tilefixo Royal NT White
Within UltraTech’s own Tile & Marble System, Royal NT White sits alongside standard grey Royal NT (same performance, lower cost where colour-bleed isn’t a concern), the S1-flexible Royal NT Plus and Royal NT Plus White (for large-format tile, natural stone slabs, and pools needing higher deformability), and the value-tier Tilefixo VT for straightforward ceramic floor work where C2TE isn’t required. It’s meant to be specified together with UltraTech BASEKRETE and FLOORKRETE for substrate levelling ahead of tiling, and TILEFIXO STYLE Epoxy Grout or CG Grout for the joint work that follows — Space Arc supplies the full sequence as one system rather than mixing adhesive brands across a job. Fosroc doesn’t carry a direct tile-adhesive competitor to this SKU — their India portfolio is built around waterproofing, concrete repair and structural grouts rather than tile fixing — so on projects where a podium deck or pool structure needs tanking before the tile goes down, it’s common to pair this UltraTech tile system over a Fosroc waterproofing membrane rather than treat the two as alternatives. Where a genuine like-for-like alternative is wanted, that comparison sits within other tile-adhesive brands (Weber, Roff, MYK) rather than Fosroc’s own catalogue.
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