STP ShaliTile Fix 100
A single-component, polymer-modified cementitious adhesive for thin-bed fixing of ceramic and clay tiles on interior floors and walls, conforming to IS 15477 Type 2 (C1).
What is it?
A ready-to-use, single-component tile adhesive mortar of cement, graded silica sand and polymer additives; you add only clean water on site. It is an entry-grade, normal-set cementitious adhesive certified to IS 15477 Type 2 and EN 12004 C1T.
Where is it used?
Interior floors and walls in homes, apartments, shops and offices, for fixing small-format ceramic and clay tiles and reconstituted stone over concrete, masonry, cement plaster and render.
Why use it?
Its polymer content gives far better grip and consistency than traditional site-batched cement-sand mortar, cutting hollow tiles, wastage and the guesswork of hand-mixing, while keeping cost competitive for standard tiling work.
How is it applied?
Mix with water to a lump-free paste, spread onto the prepared substrate with a notched trowel to a minimum 2 mm bed, and press tiles firmly into the ribs within the open time. Standard thin-bed technique, no primer needed on sound backgrounds.
About STP ShaliTile Fix 100
STP ShaliTile Fix 100 is the workhorse of the ShaliTile Fix family from STP Limited, one of India’s oldest construction-chemical manufacturers. It is a factory-blended, single-component adhesive that combines Ordinary Portland cement, carefully graded silica sand and redispersible polymer additives in a controlled ratio. Because the blend is pre-packed, every 20 kg bag mixes to the same workability and bond strength, which removes the batch-to-batch variation that plagues cement-and-sand mortar mixed by hand at the tiling site. On the job, the applicator only has to add clean water, which keeps mixing simple and repeatable even where skilled labour is scarce.
The product is positioned for standard, cost-sensitive interior tiling rather than heavy-duty or exterior work. It carries IS 15477 Type 2 certification and is classified as a normal-set cementitious adhesive, EN 12004 class C1T. In practice that means it is the correct, code-compliant choice for fixing ordinary ceramic and clay wall and floor tiles, and light reconstituted stone, in dry interior areas. For vitrified tiles, large-format panels, wet-area submersion, façades or floors that see heavy traffic, STP offers the higher ShaliTile Fix grades (200, 300, 300 White and 400), and specifying the right grade for the tile and exposure is what keeps a tiled surface from debonding a few seasons later.
The technical insight
The performance jump over conventional mortar comes from the redispersible polymer powder in the blend. When the mortar is gauged with water, these polymer particles redisperse and, as the mix cures, form a flexible film that bridges the cement matrix, the substrate and the back of the tile. That film does two things a plain cement-sand bed cannot: it dramatically improves wetting and adhesion to the low-porosity backs of glazed ceramic tiles, and it holds water in the mix so the cement can hydrate properly instead of being drawn dry by an absorbent background. The graded silica sand controls the paste rheology, giving a mortar that stands up in trowel ribs without slumping yet still keys firmly around the tile. Applied as a thin, notched bed rather than a thick dab, the adhesive contacts a far greater share of the tile back, which is why thin-bed fixing resists the hollow spots and drummy tiles that thick site mortar is prone to. As a Type 2 / C1 adhesive it meets the standard’s tensile-adhesion threshold for normal-duty interior service, which is exactly the duty this grade is designed for.
Where it is used
- Fixing small-format glazed and matt ceramic tiles on interior floors
- Wall tiling in bathrooms, kitchens and utility areas over cement plaster
- Tiling in residential flats, independent homes and villas
- Interior tile work in shops, showrooms, offices and other light-commercial spaces
- Laying reconstituted (artificial) stone tiles on sound interior backgrounds
- Fixing clay and terracotta tiles over concrete and masonry substrates
- Overlaying cement-plastered masonry walls with ceramic cladding
- General thin-bed tiling where a code-compliant Type 2 adhesive is specified
Key advantages
- Factory pre-blended, so every bag delivers consistent bond strength and workability
- Only water is added on site, which simplifies mixing and reduces labour error
- Polymer modification gives markedly better adhesion than site cement-sand mortar
- Thin-bed application cuts hollow, drummy tiles and reduces material wastage
- Generous working time of around 120 minutes at 20 degrees C for tile adjustment
- Conforms to IS 15477 Type 2 and EN 12004 C1T for documented, code-compliant use
- Bonds to a wide range of interior backgrounds: concrete, masonry, plaster and render
- Cost-effective grade that suits the bulk of standard residential tiling budgets
Limitations & considerations
- Suited to interior dry areas only; not intended for facades or continuously submerged zones
- Designed for small-format ceramic and clay tiles, not large-format or heavy vitrified panels
- As a Type 2 / C1 grade it lacks the high adhesion and slip resistance of C2 / Type 1 adhesives
- Cementitious and moisture-sensitive: needs a fully cured, sound, dust-free substrate
- Six-month shelf life, so old or humidity-exposed stock must not be used
- Not a waterproofing product; wet areas still need a separate membrane beneath the screed
Selection & best practice
Start with a sound substrate: the background must be structurally firm, fully cured, level and free of dust, oil, curing compound and loose material, with fresh concrete and plaster allowed to cure before tiling. Add the powder to clean water (roughly a 4:1 powder-to-water ratio by volume), mixing with a slow-speed paddle to a smooth, lump-free, trowellable paste, then let it stand for a few minutes and re-stir before use. Spread the adhesive with a suitable square-notched trowel held at a consistent angle to leave even ribs at a minimum 2 mm bed, covering only the area you can tile within the open time so the surface never skins over before the tile goes down. Press and slide each tile firmly into the ribs to collapse them and achieve full contact, checking a lifted tile early on to confirm good back-transfer. Work within the roughly 120-minute pot life at normal temperature, keep application between 4 and 40 degrees C, and do not re-temper stiffened material with extra water. Allow the bed to set before grouting, typically around 24 hours in warm conditions.
Specifications
| Product type | Single-component, polymer-modified cementitious tile adhesive mortar |
| Composition | Cement, graded silica sand and polymer additives |
| Standard | IS 15477 Type 2; EN 12004 C1T (normal-set cementitious, C1) |
| Pack size | 20 kg bag |
| Coverage | 6.5 to 7.5 m² per 20 kg bag at 2 mm bed thickness |
| Mixing ratio | Approx. 4:1 powder to water, by volume |
| Minimum bed thickness | 2 mm (notched-trowel thin-bed) |
| Pot life | Approx. 120 minutes at 20 degrees C |
| Application temperature | 4 degrees C to 40 degrees C |
| Shelf life | 6 months from manufacture in sealed, unopened bags |
Industry use cases
Residential
Bathroom, kitchen and living-area floor and wall tiling in flats and independent houses using standard ceramic tiles.
Retail & commercial interiors
Ceramic floor and wall tiling in shops, showrooms and offices where a code-compliant, budget-friendly interior adhesive is needed.
Institutional buildings
Tiling of corridors, toilets and service areas in schools, hospitals and hostels over cement-plastered masonry.
Renovation & fit-out
Re-tiling interior surfaces during refurbishment where thin-bed fixing over sound existing backgrounds avoids heavy mortar beds.
Developer & contractor projects
Bulk interior tiling on apartment and township projects that need repeatable quality across large tile quantities.
Frequently asked questions
What tiles can ShaliTile Fix 100 fix?
How much area does one 20 kg bag cover?
Can I use it in bathrooms and other wet areas?
Which standard does it meet?
Do I need to add anything other than water?
How is it different from the Fix 200, 300 and 400 grades?
How we position STP ShaliTile Fix 100
ShaliTile Fix 100 is the entry point of STP’s tile-fixing range and should be specified only where the job is genuinely standard: interior, dry, small-format ceramic or clay tiles. When the tile is vitrified or large-format, or the area is a wet zone, façade or high-traffic floor, step up within the same STP family to ShaliTile Fix 200, Fix 300, Fix 300 White (for translucent and light-coloured stone) or the premium Fix 400, and finish joints with a matching STP ShaliTile tile grout. Where a project is already standardised on Fosroc, the equivalent grades sit in the Nitotile range (Nitotile GP for basic duty, Nitotile GPX for polymer-modified performance). Space Arc Engineering supplies and applies all of these across Delhi NCR and pan-India, so we can help you match the correct adhesive class to the tile, substrate and exposure rather than defaulting to the cheapest bag.
Related Tile Fixing products
Source STP ShaliTile Fix 100 for your project
Authorised distribution, technical advice & professional application across Delhi NCR and Pan-India.