Mosaic / IPS Flooring — Complete Guide
Mosaic and IPS (Indian Patent Stone) flooring are traditional cement-based monolithic floor systems developed in India in the early 1900s as cost-effective alternatives to natural stone. From the iconic Athangudi tiles of Chettinad palaces to the cement-mosaic chips that floored every Indian government office, hospital and middle-class home of the 20th century, these floors became synonymous with durability, custom design and Indian craftsmanship.
This page covers IPS, mosaic tiles, terrazzo, and Athangudi tiles. They are governed by IS 1237 (Cement Concrete Flooring Tiles), IS 13801 (Clay Floor Tiles), IS 1443 (Code of Practice for Laying).
Types of Mosaic / IPS Flooring
| Type | Description |
|---|
| IPS (Indian Patent Stone) | Monolithic in-situ cast cement+stone chip mix, finished by mason |
| Mosaic / Terrazzo (Cement) | Pre-cast or in-situ cement + marble chips, polished |
| Athangudi Tile | Handmade cement-pigment tile from Athangudi, TN |
| Karnataka / Khurpi Mosaic | Traditional South Indian terrazzo |
| Italian Marble Mosaic | Marble chip terrazzo (Venetian style) |
| Glass Mosaic | Small glass tiles (300x300 mm mesh) |
| Pebble Mosaic | River pebbles set in mortar |
| Cement Mosaic Tiles (Pre-Cast) | Factory-made cement tiles with chip patterns |
| Epoxy Terrazzo | Modern alternative with epoxy binder + chips (see epoxy) |
| Hydraulic Cement Tile | Spanish-origin patterned cement tile |
IPS (Indian Patent Stone) — Detail
IPS is a monolithic in-situ flooring made by hand-trowelling a stiff mix of cement, sand and stone chips directly on the prepared sub-floor. It is then troweled smooth, allowed to cure for 7–14 days, and finally polished to expose the embedded chips. Used heavily in industrial sheds, godowns, garages, balconies, terraces, government buildings.
IPS Mix Proportions
| Component | Standard IPS | Heavy-Duty IPS |
|---|
| Cement | 1 part | 1 part |
| Coarse Sand | 1.5 – 2 parts | 1 part |
| Stone Chips (6–10 mm) | 3 – 4 parts | 2 – 3 parts |
| Water-Cement Ratio | 0.45 – 0.50 | 0.40 – 0.45 |
| Thickness | 40 – 50 mm | 50 – 75 mm |
IPS Installation Process
- Sub-Floor Prep: Clean PCC base, dampen with water
- Level Control: Fix wooden / GI level strips (50 mm wide) at 1.5–2 m intervals
- Bond Coat: Apply neat cement slurry on damp PCC surface
- Concrete Mix: 1:1.5:3 with 10 mm aggregate, slump 30–50 mm (stiff mix)
- Placement: Place between strips, vibrate / tamp to compact
- Levelling: Drag wooden / aluminium screed across strips for level
- Trowelling: Initial smoothing with wooden float
- Cement Topping (Optional): 1 part cement + 1 part marble/granite chips (3–6 mm) over fresh concrete
- Hand Trowelling: Steel trowel for smooth dense finish
- Pigment / Colour (Optional): Add oxide pigment to topping
- Strip Removal: Remove level strips after 24–48 hr; fill gaps with same mix
- Pattern Lines (Optional): Cut grooves or insert brass / aluminium strips
- Curing: Water curing for 7–14 days
- Polishing: After 21–28 days curing, polish with grinder (see polishing section)
Athangudi Tile — Heritage Flooring
Athangudi tile is a unique handcrafted cement tile from the village of Athangudi in Chettinad, Tamil Nadu. Each tile is poured by hand using local sand, coloured oxide pigments, and a glass plate for surface finishing — producing brilliant matte-glossy patterns that have adorned Chettinad palaces and mansions for over 150 years.
Athangudi Manufacturing
- Glass Plate: A clean glass plate forms the base — gives Athangudi its signature smooth surface
- Pattern Mould: Brass/copper geometric pattern frames placed on glass
- Coloured Pigment Slurry: Coloured cement + oxide pigment poured into pattern sections (creates the design)
- Mould Removal: Pattern frame carefully removed after slurry sets briefly
- Base Layer: Mixture of cement + Athangudi sand pressed on top
- Final Backing: Slightly stiffer mix as backing layer
- Pressing: Hand-pressed in mould
- Glass Removal: Glass plate removed (tile face shows pattern)
- Curing: Tiles cured in water for 21 days
Athangudi Tile Sizes
- 200 x 200 mm
- 250 x 250 mm
- 300 x 300 mm
- Custom larger sizes
- Thickness: 18 – 25 mm
Cement Mosaic / Terrazzo Tiles
Pre-cast cement mosaic tiles consist of a wearing layer (4–6 mm) of cement + marble chips + pigment over a backing layer of plain cement-sand. They were the most popular flooring in India from 1950 to 2000 before being displaced by vitrified tiles.
Specifications (IS 1237)
| Property | Value |
|---|
| Size | 200 x 200 / 250 x 250 / 300 x 300 mm |
| Thickness | 20 – 25 mm (Standard), 30 mm (Heavy Duty) |
| Wearing Layer | 4 – 6 mm cement + marble chips |
| Backing Layer | 14 – 19 mm cement + sand 1:3 |
| Compressive Strength | > 25 MPa |
| Transverse Strength | > 3 MPa |
| Water Absorption | < 10% |
| Wear Index | < 3.5 mm in 1000 m of travel |
| Chip Size | Small (1.5–7 mm), Medium (7–15 mm), Large (15–25 mm) |
Polishing Process (IPS / Mosaic)
- Initial Grinding (Grit 30/60): Heavy machine grinds away top cement skin, exposes chips
- Second Grinding (Grit 80/120): Medium grit smoothens surface
- Filling Pinholes: Fill any voids with cement slurry, allow to dry
- Third Grinding (Grit 220): Removes filler excess
- Pre-Polishing (Grit 400/800): Fine grit polishing pads
- Polishing (Grit 1500/3000): Final polishing pads
- Buffing: Wool / felt pad with marble polishing powder
- Crystallisation (Optional): Oxalic acid + steel wool buff (for mosaic / Athangudi)
- Sealing: Apply 2 coats penetrating sealer (silicone)
- Wax (Optional): Protective wax for added shine
Polishing is the key to a successful IPS / mosaic floor. The grinder removes 1–2 mm of cement skin to expose the embedded marble / granite chips, creating the signature terrazzo / mosaic look. Process takes 2–3 days for 1000 sqft.
Colour Pigments & Chip Options
Cement Pigments
- Red Oxide (iron oxide)
- Yellow Oxide
- Black (carbon / iron black)
- Green Chromium Oxide
- Blue (cobalt-based)
- Brown (mixed oxides)
- White (titanium dioxide + white cement)
Chip Materials
- White marble chips (most common)
- Coloured marble chips
- Granite chips
- Onyx chips
- Glass chips (modern terrazzo)
- Mother-of-pearl (premium)
- Brass / metal pieces (designer)
- Pebble (river pebble mosaic)
Physical Properties
| Property | IPS | Mosaic Tile | Athangudi |
|---|
| Compressive Strength | 20 – 30 MPa | 25 – 35 MPa | 15 – 25 MPa |
| Water Absorption | 5 – 8% | < 10% | 5 – 10% |
| Thickness | 40 – 75 mm | 20 – 30 mm | 18 – 25 mm |
| Weight | ~100 kg/m² | ~50 kg/m² | ~50 kg/m² |
| Slip Resistance | High (sand-faced) | Moderate (polished) | Moderate (matte) |
| Abrasion Resistance | Excellent | Excellent | Good |
| Lifespan | 50 – 100+ years | 50 – 100 years | 50 – 100+ years |
| Repairable | Yes (patch + re-polish) | Yes (replace + polish) | Yes (replace tile) |
| Custom Design | Yes (in-situ) | Pre-set patterns | Unlimited (handmade) |
Where Mosaic / IPS Excel
IPS Best For:
- Industrial floors (factories, warehouses, godowns)
- Garages and parking areas
- Terrace, balcony, courtyards
- Compound / boundary walls (slope)
- Government office floors
- School corridors, hospital floors
- Rail platforms, station floors
- Religious / temple floors
- Outdoor patios, kitchen yards
Mosaic Tile Best For:
- Residential floors (vintage homes)
- Restaurants (heritage aesthetic)
- Hotels (boutique style)
- Cafes, art galleries
- Bathroom walls (mosaic patterns)
- Garden walls, fountains
Athangudi Best For:
- Heritage homes, palaces
- Pooja rooms, traditional living rooms
- Restaurants with Indian / Chettinad theme
- Luxury hotels (signature wing)
- Designer wall accents
- Walk-in entryways
| Parameter | IPS / Mosaic | Vitrified Tile |
|---|
| Construction | Monolithic in-situ or pre-cast cement | Manufactured ceramic |
| Look | Heritage, artisan, custom | Uniform, factory-made |
| Customisability | Unlimited (in-situ) | Limited (catalogue) |
| Joints | Very few / brass strips | 2–3 mm grout lines |
| Installation Speed | Slow (3–4 weeks) | Fast (3–5 days) |
| Skilled Labour | Specialist craftsmen | Standard tile setters |
| Maintenance | Re-polishing every 5–10 yr | Minimal |
| Repairability | Excellent (patch & re-polish) | Replace whole tile |
| Lifespan | 50–100+ years | 30–50 years |
| Eco-Friendly | Yes (local materials) | Moderate (energy-intensive) |
| Cost (Rs / sqft) | 40 – 250 | 80 – 200 |
| Heritage Aesthetic | Excellent | None |
Advantages
- Unique heritage aesthetic (irreplaceable charm)
- Custom designs (any pattern, colour combination)
- Monolithic floor (no joints in IPS)
- 50–100+ year lifespan
- Repairable (re-polish brings back like-new look)
- Slip-resistant (sand-faced IPS)
- Fire-resistant (cement-based)
- Termite-proof
- Eco-friendly (local materials, low embodied energy)
- Cooler than tile floors (mass thermal effect)
- Strong (handles heavy loads)
- Affordable for simple IPS (Rs 40–80/sqft)
- Adds property resale value (heritage premium)
- Supports rural / traditional artisans
- Acid / chemical resistant (good for kitchens)
Disadvantages
- Long installation time (3–4 weeks vs 5 days for tiles)
- Skilled craftsmen difficult to find
- Athangudi is expensive (Rs 80–250/sqft)
- Polishing is messy and time-consuming
- Surface needs re-polishing every 5–10 years
- Heavy (100 kg/m² for IPS) — needs strong sub-floor
- Cement floors can develop hairline cracks
- Less water-resistant than vitrified tiles
- Stains can be difficult to remove
- Cement mosaic colour can fade over decades
- Cannot be done in cold / freezing weather
- Requires water curing (14–28 days)
- Heavy maintenance compared to vitrified
- Athangudi handmade quality varies
- Patches difficult to colour-match perfectly
Cost (Approximate, Indian Market)
| Type | Material (Rs/sqft) | Labour | Total |
|---|
| Basic IPS (Plain) | 20 – 35 | 20 – 30 | 40 – 65 |
| IPS with Marble Chip Topping | 40 – 70 | 30 – 50 | 70 – 120 |
| IPS with Polishing | 60 – 100 | 40 – 60 | 100 – 160 |
| Premium IPS with Brass Strips | 80 – 140 | 60 – 100 | 140 – 240 |
| Cement Mosaic Tile (Pre-Cast) | 40 – 80 | 30 – 50 | 70 – 130 |
| Athangudi Tile (Handmade) | 80 – 200 | 40 – 60 | 120 – 260 |
| Premium / Designer Athangudi | 200 – 400 | 50 – 80 | 250 – 480 |
| Italian Marble Mosaic (Terrazzo) | 150 – 400 | 60 – 100 | 210 – 500 |
| Glass Mosaic | 100 – 300 | 40 – 70 | 140 – 370 |
| Re-polishing existing IPS | NA | 30 – 60 | 30 – 60 |
Tests on IPS / Mosaic (IS 1237)
- Dimensional Tolerance Test
- Water Absorption Test (< 10%)
- Compressive Strength Test (> 25 MPa)
- Transverse Strength Test (> 3 MPa)
- Wear Resistance Test (Wear Index)
- Visual Inspection (cracks, chips, pattern uniformity)
- Polish Quality Check (gloss meter)
- Bond Strength to Sub-Floor
- Slip Resistance Test
- Colour Fastness
Best Practices
- Hire specialist polishing contractors for IPS / mosaic (not regular masons)
- Use Athangudi tiles soaked in water for 1 hour before laying
- Provide expansion joints (brass / aluminium strips) every 4–6 m for IPS
- Maintain proper curing (7–14 days minimum)
- Polish only after 28 days minimum curing
- Apply penetrating sealer (silicone) after polishing
- Use neutral pH cleaners for maintenance
- Avoid acidic cleaners (etch cement surface)
- Re-seal floor every 1–2 years
- Re-polish every 5–10 years
- For IPS in industrial use, use hardener (sodium silicate) topping
- For pattern alignment, use template / marking carefully
- Cure under wet gunny bags or ponding
- Pre-test colour pigments on sample tile before full floor
- Use white cement for white / light coloured mosaic
- For high-traffic / commercial, use heavy-duty IPS with 75 mm thickness
- Buy 10% extra Athangudi tiles for future replacement
- Store Athangudi tiles flat, off the ground
Common Defects & Solutions
| Defect | Cause | Remedy |
|---|
| Hairline cracks (IPS) | Drying shrinkage, no expansion joints | Provide joints every 4–6 m |
| Polish wearing off | High traffic, no re-polishing | Re-polish every 5–10 years |
| Colour fading (mosaic) | Cheap pigments, UV exposure | Use quality iron oxide pigments |
| Pinholes in surface | Air bubbles in mix | Fill with cement slurry, polish |
| Cement laitance haze | Insufficient cleaning post-polish | Acid wash carefully + neutralise |
| Tile breakage (Athangudi) | Handling, weak tile | Buy from reputed source, careful handling |
| Pattern misalignment | Poor planning, no template | Plan layout, mark template |
| Stains from oil / chemicals | Cement is porous | Apply sealer immediately after polish |
| Hollow sound | Insufficient mortar contact | Re-lay with full bedding |
| Uneven height | No level control | Use level strips during installation |
Applicable Standards
| Standard | Description |
|---|
| IS 1237 | Cement Concrete Flooring Tiles — Specification |
| IS 13801 | Clay Floor Tiles — Specification |
| IS 1443 | Code of Practice for Laying & Finishing of Cement Concrete Flooring Tiles |
| IS 2114 | Code of Practice for Laying In-situ Terrazzo Floor Finish |
| IS 456 | Plain & Reinforced Concrete (for IPS base) |
| IS 3622 | Sandstone (Slab & Tile) — Specification (related) |
| IS 1130 | Marble (Blocks, Slabs, Tiles) — Specification (chip source) |
| NTMA Standards | National Terrazzo & Mosaic Association (USA) |
| ASTM C99 | Modulus of Rupture of Dimension Stone |
Conclusion
Mosaic and IPS flooring represent India’s traditional flooring heritage — durable, customisable, repairable and beautiful in a way that factory-made tiles cannot replicate. With 50–100+ year lifespan and the ability to be re-polished back to like-new condition multiple times, these floors are eco-friendly long-term investments.
Recommendations by use:
- Industrial / Godown / Garage: Heavy-duty IPS 75 mm
- Terrace / Balcony / Courtyard: Standard IPS with chip topping
- Heritage home interior: Athangudi tiles or polished mosaic
- Restaurant / cafe (boutique): Cement mosaic tiles or terrazzo
- Pooja room / traditional area: Athangudi tiles
- Luxury heritage hotel: Italian marble terrazzo
- Designer wall accent: Glass / pebble mosaic
- Modern home wanting heritage feel: One Athangudi feature wall / area
For modern alternatives offering some terrazzo aesthetic with faster installation, see terrazzo-look vitrified tiles or epoxy terrazzo. For natural stone luxury, see marble & granite flooring; for budget flooring, see ceramic tiles.