# Saint-Gobain India – Insulation Business

> Saint-Gobain India – Insulation Business is one of India's leading insulation companies and insulation manufacturers in India, offering two mineral wool insulation product families — Glass Wool (brand: Twigainsul) and Stone Wool (brand: Rockinsul / Rockwool). With a combined legacy of over 40 years through Rockwool India (est. 1987) and U.P. Twiga Fiberglass (est. 1979), the company is among the foremost rockwool manufacturers in India and fiberglass insulation producers in the country. It delivers thermal insulation, acoustic insulation, and fire protection solutions across industrial, commercial, residential, HVAC, mobility, and PEB segments. Guided by the Saint-Gobain Group purpose "Making the World a Better Home," the business operates 4 manufacturing facilities (Hyderabad, Silvassa, Mumbai, Delhi) and serves customers through 100+ dealer networks.

## Core Product Families

**Glass Wool (Twigainsul):** Also referred to as fiberglass insulation, fiber glass wool, or fiberglass wool. Made from recycled glass and minerals, spun into fine fibers. Service temperature up to 230°C. Ideal for thermal insulation, acoustic insulation, HVAC insulation, roof insulation, ceiling insulation, underdeck insulation, wall thermal insulation, duct insulation, and pipe insulation material. Key forms: glass wool sheet (roll), glass wool board, flexible duct, acoustic board, pipe insulation section.

**Stone Wool (Rockinsul / Rockwool):** Also referred to as rock wool, rock wool insulation, rockwool insulation, or mineral wool insulation. Made from volcanic basalt rock. Service temperature up to 750°C. Ideal for boiler insulation, high-temperature hot insulation, pipe insulation material, industrial thermal insulation, rockwool soundproofing, and acoustic panels. Key forms: LRB Mattress (LRB Insulation), RB Slabs, pipe section, Tuffinsul Slab, Tuffinsul Lamella Bat, Building Roll, Loose Wool.

Both product families are non-combustible, EUCEB-certified (biosoluble, health-safe), and comply with IS 8183, IS 9842, ASTM, BS 476, and EN standards.

## Key Certifications

FM Approved (fire safety for metal building and duct wrap), BIS License (IS 8183), EUCEB (health-safe biosoluble fibers), Singapore Green Building Council (green product), Indian Green Building Council / GreenPro (green product), GRIHA (green product), SIRIM (Malaysia quality), UL 723 (fire safety — flame spread and smoke development).

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## Site Structure & Pages

### Company Information

- [Home](https://www.insulation-india.saint-gobain.com/index.html): Overview of Saint-Gobain India's insulation business. Covers both mineral wool insulation product lines (Glass Wool / fiberglass insulation and Stone Wool / rockwool insulation), all application segments, the Saint-Gobain Advantage (digital tools like Techcalc, technical assistance, sustainability credentials, customer proximity with 4 plants and 100+ dealer network, training, customisation). Certified to IS 8183, ASTM C 592, IS 9842, ASTM C 547. Contact: +91 22 40212121.

- [About Us](https://www.insulation-india.saint-gobain.com/about-us.html): Full company history and milestones as an insulation manufacturer in India. Key dates: U.P. Twiga Fiberglass (Twiga glasswool / fiberglass insulation) incorporated 1976, Sikandrabad factory 1979; Rockwool India (Rockinsul / rockwool insulation) incorporated 1987, Kaveli factory 1990; Ambernath glass wool factory 2006; Silvassa stone wool factory 2010; SG India acquires Rockwool India 2022; SG India acquires U.P. Twiga Fiberglass 2023. Manufacturing: 2 glass wool factories (Sikandrabad/Delhi, Ambernath/Mumbai), 2 stone wool factories (Kaveli/Hyderabad, Silvassa). Part of Saint-Gobain Group (360+ years, 80 countries, 85 India manufacturing sites). Certifications: FM Approved, BIS IS 8183, EUCEB, SGBC, IGBC, GRIHA, SIRIM, UL 723.

- [Sustainability](https://www.insulation-india.saint-gobain.com/sustainability.html): Net zero by 2050 ambition. Initiatives: fuel/coke consumption reduction, electrification and renewable energy sourcing, water conservation (closed-loop systems, rainwater harvesting), increased recycled content (glass wool uses up to 80% recycled glass cullet; stone wool incorporates recycled mineral streams). 8 global R&D centers. Eco-responsible manufacturing across all thermal insulation material and acoustic insulation material product lines.

- [Contact Us](https://www.insulation-india.saint-gobain.com/contact-us.html): Corporate office — Saint-Gobain India Pvt. Ltd. – Insulation Business, 5th Floor, Leela Business Park, Andheri Kurla Road, Andheri (East), Mumbai 400059. Email: sgindia.insulation@saint-gobain.com. Phone: +91 22 40212121. Regional offices: North (Noida, Chandigarh), East (Kolkata, Hyderabad, Vizag), West (Mumbai, Pune, Ahmedabad, Indore), South (Bangalore, Chennai). Business enquiry form (dealership / product requirements) and feedback form available. Serves dealers, contractors, consultants, and end users across all Indian states.

- [FAQs](https://www.insulation-india.saint-gobain.com/faqs.html): Definitions and selection guidance: why insulation is needed (thermal insulation, acoustic insulation, fire safety, personnel protection); NRC (Noise Reduction Coefficient — sound absorption, echo control); STC (Sound Transmission Class — acoustic privacy, partition walls); IIC (Impact Insulation Class — floor assemblies); thermal conductivity (k or λ, W/mK); thermal resistance (R = t/k, m²K/W); shot content; Corrosion Under Insulation (CUI); EUCEB certification; advantages of stone wool / rockwool over slag wool. Selection factors: industrial (IS 8183 — k, max temp, shot content, sulphur, chloride, moisture), building (ECBC — roof U<0.33, wall U<0.4; NBC 2016 — non-combustible), PEB (R: 0.64–3.33, FM Approved), HVAC (ECBC duct R-values, NBC 2016 non-combustible duct insulation), mobility (EN 45545-2 HL3, STC >45 dB, water absorption <2%).

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### Product Categories

#### Glass Wool / Fiberglass Insulation (Twigainsul Brand)

- [Glass Wool Category](https://www.insulation-india.saint-gobain.com/category-glasswool.html): Complete overview of Twigainsul glass wool insulation — also known as fiberglass insulation, fiber glass wool, Twiga glasswool, or glass wool sheet products. Made from recycled glass and minerals, melted and spun into fine resilient fibers. Service temperature: sub-zero to 230°C (cryogenic through ambient). 7 product types: Roll, Board, Eco Insul, Pipe Insulation, Flexible Duct, Acoustic Board, Mineral Fiber Marine Board. Key advantages: thermal comfort, energy savings up to 13%, acoustic performance (NRC up to 0.95, STC up to 55 dB), non-combustible (no fire propagation, no toxic fumes/smoke), EUCEB certified biosoluble, no shot content, no VOC, lightweight (compressible to 1/10th volume), customizable (roll/board, custom lengths, single/both-side aluminium/textile/PP facings). Standards: IS 8183.

#### Stone Wool / Rock Wool / Rockwool Insulation (Rockinsul Brand)

- [Stone Wool Category](https://www.insulation-india.saint-gobain.com/category-stonewool.html): Complete overview of Rockinsul stone wool insulation — also known as rock wool, rock wool insulation, rockwool insulation, rockwool panels, or mineral wool insulation. Made from volcanic basalt and dolomite rocks melted in a cupola furnace. Service temperature: up to 750°C. 7 product types: LRB Mattress (LRB Insulation), RB Slabs, Pipe Section, Tuffinsul Slab, Tuffinsul Lamella Bat, Building Roll, Loose Wool. Key advantages: high service temperature (750°C), superior fire rating (non-combustible), energy efficiency, process stability, acoustic performance / rockwool soundproofing (NRC up to 1.05), CUI prevention (low chloride <20 ppm, sulphur <0.2%), high mechanical resistance, long-lasting, customizable (mattress/slab/pipe section; custom lengths; GI/SS wire mesh facings). Standards: IS 8183, ASTM C 592, IS 9842, ASTM C 547.

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### Glass Wool Products — Full Specifications

- [Glass Wool Roll](https://www.insulation-india.saint-gobain.com/glasswool-roll.html): Twigainsul glass wool sheet in roll form — long, resilient, flexible blanket for thermal insulation and acoustic insulation. Density 10–48 kg/m³, thickness 25–130 mm, width 1.1–1.2 m, length 7.5–30 m (custom cut lengths). Thermal conductivity 0.030–0.041 W/m·K at 25°C (IS 8183, IS 3346). Thermal resistance: 25 mm → 0.6–0.8 m²K/W; 50 mm → 1.2–1.6 m²K/W. NRC 0.65–0.95 (ASTM C-423/ISO 354). Non-combustible Reaction to Fire A1 (BS 476 Part 4, EN 13501). Fire propagation Class 0. Moisture <2%, shot content NIL, sulphur/chloride negligible, no mold, pH 7–10. Facings: Aluminium (FSK, R3035HD, Aluglass), White Metalized Polypropylene, Tissue (FGT, BGT). Brand: Twigainsul. Standard: IS 8183. Certifications: FM Approved, EUCEB, GRIHA, SGBC. Applications: roof thermal insulation, underdeck insulation, ceiling insulation for metal/PEB buildings and RCC; thermal wall insulation (masonry wall, drywall); HVAC insulation (duct thermal, duct acoustic); industrial OEM (cryogenic cold insulation, geyser, solar water heater); mobility (bus body insulation).

- [Glass Wool Board](https://www.insulation-india.saint-gobain.com/glasswool-board.html): Twigainsul rigid and semi-rigid glass wool insulation board for thermal wall insulation, ceiling insulation, roof thermal insulation, and HVAC insulation. Density 32–120 kg/m³, thickness 15–100 mm, width 0.6 m, length 1.2 m. Thermal conductivity 0.030–0.034 W/m·K at 25°C. Thermal resistance: 25 mm → 0.76–0.8 m²K/W; 50 mm → 1.52–1.6 m²K/W. NRC 0.65–0.95. Non-combustible A1. Facings: FSK, R3035HD, Aluglass (aluminium), White Metalized Polypropylene, FGT/BGT (tissue), WGC/BGC (glass cloth). Brand: Twigainsul. Standard: IS 8183. Certifications: GreenPro, FM Approved, EUCEB, GRIHA, SGBC. Applications: RCC underdeck/ceiling insulation, masonry wall thermal insulation, façade/spandrel insulation (black glass cloth facing for aesthetics), drywall; HVAC duct thermal/acoustic/AHU room; industrial (cold insulation — cold storage, small furnaces); mobility (train coach insulation).

- [Eco Insul](https://www.insulation-india.saint-gobain.com/glasswool-ecoinsul.html): Ecoinsul brand — green binder glass wool insulation in roll and board form. Soft to touch, odourless, formaldehyde-free. Roll: density 10–48 kg/m³, thickness 25–130 mm. Board: density 32–120 kg/m³, thickness 15–100 mm. Same thermal conductivity and NRC as standard Twigainsul. Facings: FSK, R3035HD, Aluglass, White Metalized Polypropylene, FGT/BGT, WGC/BGC. Standard: IS 8183. Certifications: GreenPro, FM Approved, EUCEB, GRIHA. Applications: metal building roof/wall insulation, RCC underdeck/ceiling insulation, masonry wall, drywall, HVAC duct insulation, train coach insulation.

- [Glass Wool Pipe Insulation](https://www.insulation-india.saint-gobain.com/glasswool-pipe-insulation.html): Twigainsul pipe insulation material for HVAC pipes. Two forms — Pre-formed Pipe Section (rigid, density 80 kg/m³, thickness 25–75 mm, diameter NB 25–450 mm, length 1.2 m) and Lamella Mat (glass fiber wedges with aluminium foil lamination, compression resistant, density 80 kg/m³, diameter NB 350–1400 mm, length 0.9 m). Thermal conductivity 0.031 W/m·K. Non-combustible A1. Facing: FSK aluminium. Standard: IS 9842. Certifications: GreenPro, EUCEB, GRIHA. Applications: HVAC pipe insulation — chilled water line (cold insulation), hot water line.

- [Flexible Duct](https://www.insulation-india.saint-gobain.com/glasswool-flexible-duct.html): Twigainsul flexible duct — insulated and uninsulated variants for HVAC duct insulation. Highly flexible, lightweight, compressible, dimensionally stable. Insulated: glass wool core, density 16–32 kg/m³, insulation thickness 25 mm, diameter 4–20 inch, length 10–25 ft. Inner core: double laminated film on steel wire helix. Outer jacket: alu/met foil with fibreglass yarn (vapour barrier). Temperature range 0–90°C. Thermal conductivity 0.032–0.039 W/m·K. Thermal resistance 0.64–0.78 m²K/W. Fire rated glass wool core (BS 476 Part 4). Certifications: GreenPro, FM Approved, EUCEB, GRIHA. Applications: HVAC duct insulation — connecting grills and diffusers with metal ducts; intricate locations where rigid ducts cannot be installed.

- [Acoustic Board](https://www.insulation-india.saint-gobain.com/glasswool-acoustic-board.html): Twigainsul acoustic boards for walls — acoustic panels for acoustically sensitive areas. Rigid high-density glass wool board with black glass cloth facing. Density 70–80 kg/m³, thickness 25–50 mm, width 0.6 & 1.2 m, length 1.2 & 2.5 m. Facing: FSK one side + BGC (black glass cloth) other side — no perforated metal covering needed. Thermal conductivity 0.0306 W/m·K. NRC 0.65 (25 mm), 0.75 (with 35 mm air gap). Non-combustible A1. Standard: IS 8183. Certifications: FM Approved, EUCEB, GRIHA, SGBC. Applications: acoustic insulation for building (underdeck/false ceiling/masonry wall), HVAC (duct acoustic/AHU/MEP room noise control), industrial OEM (genset, crash testing pit), mobility (AC ducts in metro train coaches).

- [Mineral Fiber Marine Board (MFMB)](https://www.insulation-india.saint-gobain.com/glasswool-mineral-fiber-marine-board.html): Twigainsul MFMB — also known as MWMB or MFRB. Rigid fiberglass insulation board for ship building (bulkhead, deckhead, duct insulation). Density 56 kg/m³, thickness 25–75 mm, width 0.6 m, length 0.9 m. Facing: WGC (white glass cloth). Thermal conductivity 0.030–0.041 W/m·K. Non-combustible. Smoke index <10, toxicity index <5, oxygen index >65 (NCD 1427). Standard: Naval Engineering Standard 802 Part 1, NCD 1427 Issue 1. Certifications: EUCEB. Applications: Mobility — ship building.

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### Stone Wool / Rock Wool / Rockwool Products — Full Specifications

- [LRB Mattress](https://www.insulation-india.saint-gobain.com/stonewool-lrb-mattress.html): Rockinsul LRB Insulation — Low Resin Bonded stone wool semi-flexible mattress for high-temperature industrial hot insulation. Primary product for boiler insulation, hot pipe insulation material, furnace insulation, and tank insulation. Density 70–160 kg/m³, thickness 25–100 mm, width 1.22 m, length 1.52–5 m (custom lengths — fewer joints, less wastage). Thermal conductivity 0.059 W/m·K at 200°C. Non-combustible (BS 476 Part 4). Flame Spread Index ≤25, Smoke Developed Index ≤50 (ASTM E84/UL 723). Water absorption <0.5 kg/m², chloride <20 ppm, sulphur <0.2%, no fungal growth, pH 7–10. Facings: GI Wire Mesh or SS Wire Mesh. Brand: Rockinsul. Standards: IS 8183, IS 3144, ASTM C592. Certifications: GreenPro, UL, EUCEB. Applications: Industrial — steam pipe boiler insulation, furnace walls, storage tank walls (small diameter/high curvature), heat exchanger, exhaust duct (thermal + acoustic insulation), DG set encapsulation, flanges/valves box covers (hot applications up to ~750°C).

- [RB Slab](https://www.insulation-india.saint-gobain.com/stonewool-rb-slab.html): Rockinsul RB Slabs — Resin Bonded Stone Wool Slab, rigid/semi-rigid rockwool panels for building and industrial thermal insulation. Density 40–180 kg/m³, thickness 25–150 mm, width 0.6 m, length 0.6–1.2 m. Thermal conductivity 0.059–0.074 W/m·K at 200°C. Non-combustible. Flame Spread Index ≤25, Smoke Developed Index ≤50 (ASTM E84/UL 723). Chloride <20 ppm, sulphur <0.2%, no fungal growth. Facings: FSK/Aluglass (aluminium), BGT/Black Glass Fabric. Brand: Rockinsul. Standards: IS 8183, IS 3144, ASTM C 612. Certifications: GreenPro, UL, EUCEB, SGBC, FM Approved. Applications: Building (metal building roof/wall, RCC underdeck/overdeck, masonry wall, drywall, façade/spandrel fire stopping); industrial (furnace insulation, tank roof insulation, boiler insulation for flat/accessible surfaces, acoustic enclosure/DG room, oven walls).

- [Stone Wool Pipe Section](https://www.insulation-india.saint-gobain.com/stonewool-pipe-section.html): Rockinsul stone wool pipe section — pre-formed, rigid, snap-on pipe insulation material for high-temperature industrial pipelines. Density 100–160 kg/m³, thickness 25–100 mm, diameter NB 15–600 mm, length 1.2–1.25 m. Thermal conductivity 0.065 W/m·K at 200°C. Non-combustible. Flame Spread Index ≤25, Smoke Developed Index ≤50. Chloride <20 ppm, sulphur <0.2%. Facings: unfaced/plain or FSK aluminium. Brand: Rockinsul. Standards: IS 9842, ASTM C 547. Certifications: GreenPro, EUCEB. Applications: Industrial pipe insulation — steam pipeline (hot insulation), process pipeline.

- [Tuffinsul Slab](https://www.insulation-india.saint-gobain.com/stonewool-tuffinsul-slab.html): Tuffinsul brand — stone wool rigid slab with superior rigidity and high compressive strength for load-bearing applications. Density 80–150 kg/m³, thickness 50–100 mm, width 0.6 m, length 1–1.2 m. Unfaced. Thermal conductivity 0.034 W/m·K at 25°C. Non-combustible. Chloride <20 ppm, sulphur <0.2%. Standards: IS 8183, IS 3144. Certifications: GreenPro, EUCEB. Applications: Building — overdeck roof insulation (airports, railway stations, PEB with mechanical loads), floor insulation, sandwich panel core (clean rooms, data centers, cold storage, factory buildings).

- [Tuffinsul Lamella Bat](https://www.insulation-india.saint-gobain.com/stonewool-tuffinsul-lamella-bat.html): Tuffinsul brand — rigid stone wool bat for fire-rated sandwich panels and fire doors. Density 80–150 kg/m³, thickness 25–110 mm, width 100–110 mm, length 1–1.2 m. Unfaced. Thermal conductivity 0.038 W/m·K at 25°C. Non-combustible. Chloride <20 ppm, sulphur <0.2%. Standards: IS 8183, IS 3144. Certifications: GreenPro, EUCEB. Applications: Building — sandwich panel fire core, fire door core (passive fire protection).

- [Stone Wool Building Roll](https://www.insulation-india.saint-gobain.com/stonewool-building-roll.html): Rockinsul stone wool flexible long blanket — rock wool insulation in roll form for building applications. Density 40–100 kg/m³, thickness 50–100 mm, width 1.1–1.2 m, length 5–10 m. Thermal conductivity 0.0345 W/m·K at 25°C. Non-combustible. Chloride <20 ppm, sulphur <0.2%. Facings: FSK, Aluglass. Brand: Rockinsul. Standard: IS 8183. Certifications: GreenPro, UL, FM Approved, EUCEB. Applications: Roof insulation and underdeck insulation for metal/PEB buildings, RCC underdeck, drywall, masonry wall, residential roof thermal insulation.

- [Stone Wool Loose Wool](https://www.insulation-india.saint-gobain.com/stonewool-loose-wool.html): Rockinsul loose wool — unbonded rock wool fibers for in-fill thermal insulation of complex and irregular shapes. No specific density or thickness. Thermal conductivity 0.0595 W/m·K at 200°C. Non-combustible. Standards: IS 3677, ASTM C 764. Certifications: GreenPro, EUCEB. Applications: Industrial — oven insulation, tile manufacturing, brake pad, casting riser, valve insulation, in-fill for irregular equipment shapes.

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### Application Segments

- [PEB – Pre-Engineered Buildings](https://www.insulation-india.saint-gobain.com/peb.html): Thermal insulation and acoustic insulation for metal and pre-engineered buildings. Addresses solar heat ingress through roof/walls, high electricity costs, and rain drumming/external noise. Roof thermal insulation: underdeck insulation (single skin — Twigainsul glass wool rolls, lightweight, lengths up to 30 m, weld-mesh-free, both-side lamination, custom thicknesses for ECBC compliance) and overdeck insulation (double skin — high-density glass wool or stone wool Tuffinsul Slab for mechanical loads at airports/railway stations). Thermal wall insulation: glass wool or stone wool rolls/boards for ECBC 2017. Benefits: temperature reduction, energy savings, acoustic insulation (rain noise, external noise), fire safety (Class A1, EUCEB, FM Approved).

- [Industrial](https://www.insulation-india.saint-gobain.com/industrial.html): Hot insulation and cold insulation solutions for process industries. Sectors: Power, Oil and Gas, Chemical, Pharma, Iron and Steel, Cement, Sugar and Distillery, Paper. Applications: Boiler insulation (Rockinsul LRB Mattress for curved surfaces up to 750°C; RB Slabs for flat boiler tops), Pipe insulation material (hot: Rockinsul Pipe Section / LRB Mattress; cold: Twigainsul glass wool up to 230°C with vapour barrier facings), Storage Tank (LRB Mattress for small diameter walls; RB Slabs for large diameter walls/roofs; glass wool for dual-temp), LNG Tank (Cryolene glass wool — -170°C to +120°C), Other Equipment (ovens, heat exchangers, flanges/valves, exhaust duct acoustic insulation, DG sets, sandwich panels, ESP, chimney). Benefits: energy savings, rockwool soundproofing/acoustic insulation, personnel protection (surface temp <60°C), fire safety.

- [Commercial Building](https://www.insulation-india.saint-gobain.com/commercial-building.html): Thermal insulation and acoustic insulation for offices, malls, hospitals, institutions. Applications: Partition Wall acoustic insulation (glass wool rolls — STC 41–75 dB, NRC 0.65–1, fire rating up to 3 hours), Underdeck/Ceiling insulation (glass wool boards or stone wool RB slabs — rigid/semi-rigid, lightweight, aesthetic facings), Façade / thermal wall insulation (glass wool boards with black glass cloth facing; stone wool RB Slabs/Tuffinsul Lamella Bats for spandrel fire stopping). Benefits: thermal comfort, energy savings, noise isolation/rockwool soundproofing, fire safety (non-combustible, no fire propagation, no toxic smoke, no fire droplets), health safety (EUCEB certified).

- [HVAC](https://www.insulation-india.saint-gobain.com/HVAC.html): HVAC insulation for offices, hotels, hospitals, institutes, cleanrooms, semiconductor facilities. Applications: Pre-Insulated Duct/duct board (high-density glass wool — 15% lower energy, 70% lighter than metal duct, 5× faster installation, fire-safe, high thermal resistance, good sound absorption), Duct thermal insulation (glass wool rolls with FSK/PP facing — R ≥ 0.6 m²K/W per ECBC, non-combustible per NBC 2016, vapour barrier against condensation), Duct acoustic insulation (glass wool with glass cloth lining — absorbs airflow/turbulence noise), Flexible Duct (short runs, connecting grills/diffusers), Acoustic Board (AHU/MEP rooms — high NRC, rigid panels, no perforated metal), Chilled Water Pipe insulation (glass wool pipe sections with vapour barrier, R 0.4–1.2 m²K/W per ECBC).

- [Mobility](https://www.insulation-india.saint-gobain.com/mobility.html): Glass wool insulation for rail and road transportation. Road (cars, buses, trucks): thermo-acoustic insulation in uncured wool/roll/board — engine heat, noise/vibration control; door panel, head liner, outer dash, engine encapsulation, battery cover, tunnel; up to 230°C, lightweight, fire-safe, biosoluble. Train and Metro: glass wool rolls/boards for interior walls/ceiling/floor (thermal comfort, acoustic insulation, energy savings, vibration resistance, EN 45545-2 HL3 fire compliance, customizable facings); HVAC ducts for coaches (glass wool + Climaver duct boards). Ship building: MFMB (bulkhead, deckhead, duct insulation).

- [Residential](https://www.insulation-india.saint-gobain.com/residential.html): Thermal insulation for homes compliant with BEE Eco Niwas RETV code. Applications: Roof insulation / roof thermal insulation (glass wool boards or rolls for RCC roof with false ceiling — semi-rigid/rigid boards for fewer fixtures; rolls for fast installation with fewer joints; stone wool building rolls also available; custom factory-cut lengths minimize wastage); Thermal wall insulation (glass wool or stone wool for thermal comfort, acoustic insulation, fire safety — non-combustible, no toxic smoke, EUCEB certified, lightweight to reduce structural load).

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### Case Studies

- [Energy Consumption Study](https://www.insulation-india.saint-gobain.com/preliminary-finding-energy-consumption.html): Residential thermal insulation study — energy savings from glass wool roof insulation and wall insulation. Results across 4 rooms: 15–35% energy reduction with roof insulation alone; additional 6–28% reduction with exposed wall insulation added. Demonstrates performance of glass wool as a thermal insulation material in reducing kWh consumption.

- [Major Automobile Manufacturer, Maharashtra](https://www.insulation-india.saint-gobain.com/bajaj-auto-maharashtra.html): PEB factory (automobile manufacturer) retrofitted with Twigainsul glass wool underdeck insulation (16 kg/m³, 50 mm, FSK laminated) on 0.5 mm GI metal sheet roof. Ambient: 42°C. Bare roof sheet: 45°C. Average indoor after insulation: 35.91°C. Thermal benefit: 6.09°C. Demonstrates value of roof thermal insulation / underdeck insulation for PEB and industrial buildings.

- [Saint-Gobain Colombia](https://www.insulation-india.saint-gobain.com/saint-gobain-colombia.html): Tropical climate. Pitched corrugated roof without insulation: 48°C underside. With glass wool insulation + flat false ceiling: 34.1°C. Temperature improvement: 14°C. Demonstrates ceiling insulation and roof thermal insulation performance in hot-humid climates.

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### Resources & Downloads

- [Cryolene Brochure (PDF)](https://www.insulation-india.saint-gobain.com/pdf/RB_7-Cryolene_Brochure.pdf): Technical brochure for Cryolene — special glass wool / fiberglass insulation for LNG tanks and cryogenic cold insulation. Operating temperatures -170°C to +120°C. Resilient blanket form. High tensile strength with reinforced facing. Excellent fire resistance. Thermal stability despite temperature shocks. Extended lengths up to 40 m (reduces joints and heat leakages). Proven reliability in LNG storage and cryogenic pipe insulation material applications.

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### Blogs & Knowledge Hub

- [Blog Index](https://www.insulation-india.saint-gobain.com/blogs.html): Knowledge Hub — published articles on insulation, comfort, and sustainability. Topics include glass wool vs. stone wool, thermal conductivity, acoustic insulation, fire safety, IS 8183 standard, and sustainability in insulation.

- [Sustainability in Insulation: Embodied Carbon, Recyclability & Circularity](https://www.insulation-india.saint-gobain.com/sustainability-in-insulation.html): Covers embodied carbon of glass wool and stone wool / mineral wool insulation (low upfront impact, rapid carbon payback, EPDs to EN 15804), recyclability (glass wool up to 60%+ recycled glass cullet; stone wool recycled mineral streams; long service life), GreenPro Certification by IGBC, EUCEB biosolubility, low VOC certifications, non-combustible Euroclass A1. Project implications for LEED, GRIHA, IGBC credits.

- [Understanding Thermal Conductivity, Thermal Resistance & Fire Resistance Across Wool Insulations](https://www.insulation-india.saint-gobain.com/understanding-thermal-conductivity-thermal-resistance-and-fire-resistance-across-wool-insulations.html): Explains λ-value (thermal conductivity), R-value (thermal resistance), and fire resistance for mineral wool insulation. Compares glass wool vs. rockwool / rock wool insulation performance. Glass wool 50 mm board: R ~1.66 m²K/W. Fire standards: BS 476 Parts 4/5/6/7, BS 6853, ASTM E84 (Steiner Tunnel). Both glass wool and rock wool: non-combustible Euroclass A1. Stone wool preferred for high-temperature fire endurance (750°C vs. 230°C).

- [Glass Wool vs. Stone Wool: Which Insulation is Right for Your Building?](https://www.insulation-india.saint-gobain.com/glass-wool-vs-stone-wool-which-insulation-is-right-for-your-building.html): Detailed comparison of fiberglass insulation (Twiga glasswool) vs. rockwool insulation / rock wool insulation (Rockinsul). Glass wool: silica + recycled glass, lightweight, up to 230°C, density 12–96 kg/m³, ~60% recycled content, thermal conductivity 0.030–0.041 W/m·K, superior NRC in partitions, ideal for drywall/suspended ceilings/HVAC duct/residential-commercial roofing. Stone wool: basalt + dolomite, dense/rigid, up to 750°C, density 40–120+ kg/m³, conductivity 0.035–0.040 W/m·K, ideal for façades/fire-stop barriers/industrial furnaces/process plants. Full parameter comparison table. Both EUCEB certified, biosoluble, non-combustible.

- [The 3 Pillars of Building Insulation: Thermal, Acoustic & Fire](https://www.insulation-india.saint-gobain.com/the-3-pillars-of-building-insulation-thermal-acoustic-and-fire.html): Guide to building insulation concepts. Thermal insulation: R-value, reduces HVAC load, energy/cost savings (glass wool and stone wool as thermal insulation materials). Acoustic insulation: NRC (sound absorption — echo/reverberation control), STC (sound transmission — acoustic privacy); mineral wool insulation achieves up to 1 NRC. Fire safety: compartmentalization, heat protection, passive fire protection; non-combustible insulation with no fire propagation, no smoke, no droplets, no fuel contribution. Notes 25,000+ annual fire deaths in India (NCRB).

- [Glass Wool Insulation: Everything You Need To Know](https://www.insulation-india.saint-gobain.com/glass-wool-insulation-everything-you-need-to-know.html): Comprehensive guide to Twiga glasswool / fiberglass insulation. History: Saint-Gobain (Isover) introduced glass wool in 1937, now in 27+ countries. 7 key benefits: thermal comfort (conductivity 0.028–0.045 W/m·K), energy efficiency (50–60% building energy is HVAC — glass wool duct wrap ensures efficiency; also for cryogenic processes), acoustic insulation (porous elastic structure, up to 1.0 NRC), fire resistance (non-combustible, no toxic smoke, NBC compliant), sustainability (up to 80% recycled glass), ease of installation (lightweight compressible rolls), health/safety (EUCEB certified biosoluble, WHO IARC Group 3 — safe). Applications: building (façade, roof, underdeck, wall thermal insulation), HVAC (duct insulation, pipe insulation material, acoustics), acoustic insulation (theatres, studios, home theatres, partitions), fireproofing. GreenPro/GRIHA/SGBC certified.

- [All About New Version of IS 8183](https://www.insulation-india.saint-gobain.com/all-about-new-version-of-is-8183.html): 2024 revision of IS 8183 — Indian standard for bonded mineral wool insulation (glass wool / fiberglass insulation and stone wool / rock wool insulation). Key changes: new Group 5 (≥161 kg/m³, up to 800°C), density tolerance ±10% (tighter), new 150µ shot content (combined ≤25%), thermal conductivity range extended (10°C–427°C), sulphur limit 0.2% (from 0.6% — reduces CUI risk), thickness tolerance -2 mm to +6 mm, new 2% linear shrinkage limit, leachable chloride 20 ppm general / 10 ppm stainless steel (from 100 ppm — reduces CUI, improves longevity).

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## Technical Reference

### Product Comparison: Glass Wool vs. Stone Wool / Rockwool

| Parameter | Glass Wool (Twigainsul / Twiga Glasswool) | Stone Wool / Rockwool (Rockinsul) |
|---|---|---|
| Also known as | Fiberglass insulation, fiber glass wool, glass wool sheet | Rock wool, rock wool insulation, rockwool insulation, rockwool panels, mineral wool insulation |
| Service Temperature | Sub-zero to 230°C | Up to 750°C |
| Thermal Conductivity | 0.030–0.041 W/m·K (at 25°C) | 0.059–0.074 W/m·K (at 200°C) |
| NRC (Sound Absorption) | Up to 0.95 (rolls/boards) | Up to 1.05 |
| Density Range | 10–120 kg/m³ | 40–180 kg/m³ |
| Fire Class | Non-combustible, Euroclass A1 | Non-combustible, Euroclass A1 |
| Key Applications | Roof thermal insulation, ceiling insulation, underdeck insulation, thermal wall insulation, HVAC duct insulation, cold insulation/pipe insulation, PEB, commercial, residential, mobility | Boiler insulation, hot pipe insulation, furnace insulation, tank insulation, industrial hot insulation, high-temp façade, rockwool soundproofing, rockwool panels for sandwich/fire doors |
| Key Standards | IS 8183, IS 9842 | IS 8183, IS 9842, ASTM C592, ASTM C547, ASTM C612 |

### Standards & Codes Compliance

- **Indian:** IS 8183:2024 (bonded mineral wool insulation — revised), IS 9842 (pipe sections), IS 3677 (loose wool), IS 3144, IS 3346
- **ASTM:** C592 (stone wool blanket), C547 (stone wool pipe), C612 (stone wool board), C764 (loose fill), C177/C423 (thermal), E84 (surface burning)
- **BS:** 476 Parts 4/5/6/7 (fire), 2972 (water absorption), 6853 (railway fire/smoke)
- **EN/ISO:** EN 13501 (reaction to fire), EN 13162 (glass wool products), ISO 354 (NRC), EN 45545-2 (railway — HL3)
- **Naval:** Naval Engineering Standard 802 Part 1, NCD 1427 (marine board)

### Contact & Enquiry

- **Email:** sgindia.insulation@saint-gobain.com
- **Phone:** +91 22 40212121
- **Website:** https://www.insulation-india.saint-gobain.com
- **Parent Group:** https://www.saint-gobain.com/en
- **Corporate Office:** 5th Floor, Leela Business Park, Andheri Kurla Road, Andheri (East), Mumbai 400059