Frosted and etched glass refer to glass with one or both surfaces deliberately treated to scatter light, creating a translucent (light-transmitting but obscuring) finish. The result is glass that lets daylight through while screening the view — ideal for bathroom and partition windows, office cubicle dividers, conference room doors, shop signage, decorative panels and any space that needs privacy with brightness.
Three primary techniques are used: sandblasting (mechanical abrasion), acid etching (chemical reaction with hydrofluoric acid) and frosted film (adhesive vinyl applied to plain glass). Each gives a different texture, durability and cost profile.
Top Indian brands: Saint-Gobain SATINOVO & MASTER VIEW, AIS Designer / AIS Decor, Sejal Decorative, Modiguard Acid Etched, Glass Etching Studios (custom designs), 3M / LLumar / Garware frosted films.
"Frosted" is the visual effect — a misty, translucent surface that scatters incoming light. "Etched" usually refers to the technique by which the frosting is produced (chemical etching). Common terms used interchangeably in the Indian market:
Result: Rough, slightly bumpy surface. Strong frosted effect. Visible fingerprints if surface untreated.
Result: Smooth, silky satin surface. Anti-fingerprint (uniform micro-pit texture). Premium look. Used by Saint-Gobain SATINOVO & MASTER VIEW.
Result: Removable / replaceable frosted finish on plain glass. Lowest cost. Lifespan 5–10 years (UV exposure dependent).
Ceramic ink (silica + pigment) is silk-screened or digital-printed on toughened glass and fired during tempering. Permanent, scratch-resistant, weather-proof — ideal for facades and shower screens. Saint-Gobain SGG SERALIT, AIS Decor.
During float glass manufacture, a textured roller imprints a pattern (linen, mistlite, chequered, rain) on one face. Lowest cost obscure glass; texture is integral, not surface-applied. Brands: Pilkington Texture range, Modiguard Pattern, AIS Pattern.
| Parameter | Sandblasted | Acid Etched | Frosted Film | Ceramic Frit | Patterned Float |
|---|---|---|---|---|---|
| Method | Abrasive blast | HF acid chemistry | Adhesive vinyl | Fired ink | Roller pattern |
| Texture | Rough, pitted | Smooth satin | Smooth film | Smooth glossy | Integral pattern |
| Privacy | High | High | Medium-High | Medium (designs) | Medium |
| Anti-Fingerprint | Poor (untreated) | Excellent | Good | Excellent | Good |
| Permanence | Permanent | Permanent | 5–10 yr life | Permanent | Permanent |
| Scratch Resistance | Surface scratches show | Better than sandblast | Easily scratched | Excellent | Excellent |
| Custom Designs | Yes (any) | Yes (patterns) | Yes (printed film) | Yes (digital print) | Stock patterns only |
| Cleanability | Difficult (porous) | Easy | Easy | Easy | Easy |
| Cost (Rs/sqft) | 150 – 350 | 180 – 400 | 60 – 150 | 250 – 600 | 120 – 240 |
| Pattern | Description | Privacy Level |
|---|---|---|
| Mistlite / Mist | Soft mottled, all-over frosting | High |
| Linen | Fine woven fabric pattern | High |
| Chequered / Square | Grid of small squares | Medium |
| Rain / Vertical Lines | Vertical line ripple | Medium-High |
| Cathedral | Subtle wavy texture | Low-Medium |
| Flutex / Reeded | Vertical ribbed channels | High (close), Low (far) |
| Diamond | Diamond grid imprint | Medium |
| Cross-Reeded | Two-direction ribs | Medium-High |
| Antique | Vintage hammered look | Medium |
| Pinhead | Tiny dots | High |
| Hammered | Hammered metal look | Medium-High |
| Aqualite / Watercolour | Smooth wave pattern | Medium |
| Property | Value |
|---|---|
| Substrate | Annealed / Toughened Float Glass |
| Thickness Range | 4–19 mm |
| Light Transmission | 70–85% (depending on technique & pattern depth) |
| Light Diffusion | 80–95% (high) |
| Privacy Rating | Excellent (1 m+ viewing distance) |
| UV Transmission | ~70% (same as base glass) |
| Density | 2500 kg/m³ |
| Strength (vs Annealed) | Acid Etched: 100%; Sandblasted: 95% (slight surface weakening) |
| Lifespan | 50+ yr (etched/sandblasted); 5–10 yr (film) |
| Cleanability | Acid etched: easy; Sandblasted: difficult |
| Compatibility | Can be toughened, laminated, double-glazed |
| Brand | Products |
|---|---|
| Saint-Gobain Glass India | SGG SATINOVO (acid etched), MASTER VIEW, SERALIT (ceramic frit), MASTERLIGNE |
| Asahi India Glass (AIS) | AIS Decor (acid etched), AIS Designer Pattern, AIS Frosted |
| Sejal Glass | Sejal Designer, Decorative, Frosted |
| Modiguard (HNG) | Modiguard Designer, Acid Etched |
| Pilkington (NSG) | Pilkington Texture (Cotswold, Stippolyte, Charcoal Sticks) |
| FG Glass / FuYao | FG Decor |
| Gold Plus Glass | Gold Plus Decorative |
| 3M India | 3M FASARA decorative films, Privacy films |
| Garware Suncontrol | Frosted Films, Decorative Films |
| LLumar (Eastman) | LLumar Decorative Films |
| Bendheim / Walker Textures (imported) | Premium etched specifications |
| Custom Etching Studios | Local artisanal etching (across major Indian cities) |
| Type / Process | Cost (Rs/sqft) |
|---|---|
| Patterned Rolled Float (4–5 mm) | 120 – 220 |
| Sandblasted Plain Frost (5 mm) | 150 – 280 |
| Sandblasted Pattern (5 mm) | 250 – 450 |
| Acid Etched Plain (5 mm Saint-Gobain Satinovo) | 180 – 320 |
| Acid Etched Pattern (6 mm) | 320 – 550 |
| Toughened Frosted (8 mm) | 380 – 580 |
| Toughened Acid Etched (10 mm) | 500 – 750 |
| Ceramic Frit Print (Toughened, 8 mm) | 500 – 950 |
| Frosted Film (DIY) | 40 – 110 |
| Frosted Film (Professional Install) | 90 – 180 |
| 3M / LLumar Premium Privacy Film | 200 – 400 |
| Custom Logo / Design Etching | + Rs 100–500/sqft |
| Bevel Edge Work | + Rs 80–200/sqft |
| Standard | Description |
|---|---|
| IS 14900 | Transparent Float Glass (substrate) |
| IS 2553 (Part 1) | Safety Glass (if toughened) |
| IS 3548 | Glazing Code of Practice |
| EN 572-5 | Patterned Glass — Sizes & Specifications |
| EN 1096 | Coated Glass (related to ceramic frit / mirror) |
| EN ISO 12543 | Laminated Decorative Glass |
| ASTM C1036 | Flat Glass (rolled / patterned types) |
| ASTM E2188 / E2189 / E2190 | IGU Performance for double-glazed assemblies |
| ASTM D3359 | Adhesion (Cross-Cut Tape Test for films) |
| ISO 9050 | Light & Solar Properties |
| NBC 2016 Part 6 Sec 5 | National Building Code — Glass & Glazing |
Frosted and etched glass are the go-to solutions for combining privacy with daylight. For Indian homes, acid-etched glass (Saint-Gobain SATINOVO) is the premium choice for bathrooms and partitions; sandblasted is economical for one-off decorative applications; rolled patterned (Mistlite, Linen) is the most cost-effective for windows; and frosted film is a low-cost retrofit option.
The substrate is always float glass; upgrade to toughened for shower enclosures, doors and safety zones. For added security and overhead use, choose laminated options with frosted PVB / EVA. For solar control, combine with tinted or reflective coatings, and for energy efficiency choose double-glazed units with frosted internal panes.
Frame these glass panels with UPVC windows or aluminium sliding windows for complete privacy assemblies.