Structural Steel
Passive protection for approved beam, column and hollow-section systems where the specified rating and tested design require spray-applied material.
Tested passive fire protection for structural elements
Vermiculite Fire Spray & Fire-Protective Coatings in Mumbai and India
Survey, system selection, application, quality checks, documentation and repair support for commercial and industrial projects.
Home / Passive Fire Protection / Vermiculite Fire Spray
What is vermiculite fire spray?
Vermiculite fire spray is a factory-formulated, spray-applied passive fire-protection material that combines lightweight mineral aggregate with a cementitious or gypsum-based binder. When installed as part of an approved tested system, the insulating layer delays temperature rise in the protected structural element during fire exposure.
It may be specified for structural steel beams and columns, decks, concrete elements or other approved substrates. Product selection depends on the required fire-resistance period, member geometry, steel section factor, critical temperature, environment, substrate, durability and tested-system limitations.
Reliance Fire Protection Systems supports surveys, specification coordination, application, inspection documentation and repair planning from Mumbai for projects across India.
Vermiculite Spray Fire Protection Applications
Steel and Concrete Decks
Underside application where permitted by the tested assembly, with careful coordination around profiles, edges, penetrations and services.
Concrete Elements
Protection or upgrading of selected concrete assemblies only where the product documentation and approved design cover the substrate and exposure.
Industrial Buildings
Warehouses, factories, utility areas and process facilities requiring durable passive fire protection compatible with the operating environment.
Commercial Projects
High-rise, institutional, retail and infrastructure buildings requiring concealed or architectural fire-resistive protection.
Repairs and Reinstatement
Condition assessment and compatible reinstatement after impact, service installation, water exposure or local damage, subject to the approved system.
How the Vermiculite Fire Spray Process Works
1. ReviewConfirm fire strategy, element schedule, rating, steel data, substrate and approved system.
2. PrepareCheck access, cleanliness, primer compatibility, masking, weather and substrate acceptance.
3. ApplyMix and spray the material using controlled equipment and the manufacturer’s installation method.
4. InspectVerify coverage, thickness, condition and specified density or adhesion requirements.
5. DocumentRecord areas, batches, readings, repairs, deviations and handover information.
Important: vermiculite fire spray does not have one universal thickness or rating. The installed thickness must be derived from the approved tested system for the exact member, section factor, critical temperature, fire exposure and required resistance period.
Specification and Quality-Control Checks
Tested System
Confirm the product, substrate, member orientation, fire exposure, permitted thickness range and design limitations.
Substrate Compatibility
Review primers, galvanizing, contamination, rust, release agents and any requirement for key coat, mesh or mechanical reinforcement.
Thickness and Profile
Measure installed thickness at the required locations and correct low areas using the approved application method.
Density and Bond
Coordinate density and cohesion/adhesion verification when required by the specification, authority, manufacturer or inspection plan.
Environment and Durability
Assess humidity, water exposure, vibration, impact, air movement and whether an approved sealer, finish or higher-density system is needed.
Interfaces and Repairs
Coordinate connections, hangers, penetrations, cladding and later services so protection continuity is not compromised.
Standards context: ISO 834-10 addresses testing of applied fire-protection systems on structural steel, while ISO 834-11 addresses assessment over thicknesses, steel section factors, design temperatures and fire-resistance periods. ASTM E605/E605M covers SFRM thickness and density; ASTM E736/E736M covers cohesion/adhesion testing. The project specification, approved listing, manufacturer instructions and applicable authority requirements govern each installation.
Vermiculite Spray Compared with Other Fire Protection
Vermiculite / Cementitious Spray
A non-reactive insulating layer generally suited to fast coverage of complex structural profiles. Finish and durability vary by system.
Intumescent Coating
A reactive coating that expands under heat. It may provide a smoother finish but has different thickness, preparation and environmental limits.
Fire-Protection Boards
Factory-produced boards can create a boxed protection system with controlled thickness and finish, but require joint and fixing coordination.
State-Wise Vermiculite Fire Spray Services Across India
Project support is available from Mumbai across India, subject to quantity, site access, programme, specification, approved-product availability and commercial feasibility.
Andhra PradeshArunachal PradeshAssamBiharChhattisgarhGoaGujaratHaryanaHimachal PradeshJharkhandKarnatakaKeralaMadhya PradeshMaharashtraManipurMeghalayaMizoramNagalandOdishaPunjabRajasthanSikkimTamil NaduTelanganaTripuraUttar PradeshUttarakhandWest BengalAndaman and Nicobar IslandsChandigarhDadra and Nagar Haveli and Daman and DiuDelhiJammu and KashmirLadakhLakshadweepPuducherry
Major city coverage: Mumbai, Navi Mumbai, Thane, Pune, Nashik, Nagpur, Ahmedabad, Surat, Vadodara, Rajkot, Delhi NCR, Noida, Gurugram, Jaipur, Chandigarh, Lucknow, Kanpur, Kolkata, Bhubaneswar, Patna, Ranchi, Raipur, Indore, Bhopal, Hyderabad, Bengaluru, Chennai, Coimbatore, Kochi, Thiruvananthapuram, Visakhapatnam and other project locations.
Vermiculite Fire Spray FAQs
What is vermiculite fire spray?
It is a lightweight mineral-based sprayed fire-resistive material that insulates a protected element when installed as part of an approved tested system.
Where can vermiculite fire-protective coating be used?
Approved applications may include steel beams, columns, decks, concrete elements and selected building services covered by the tested design.
How thick should vermiculite fire spray be?
Thickness depends on the tested system, member geometry and section factor, required rating, critical temperature, substrate and exposure. There is no universal value.
Is vermiculite spray the same as intumescent paint?
No. Vermiculite spray is normally a non-reactive insulating layer, while intumescent coating expands when heated.
Can it be applied over painted or galvanized steel?
Only if the approved system and manufacturer permit the exact primer or substrate and the required bond arrangement is confirmed.
How is the work inspected?
Checks may cover substrate acceptance, coverage, thickness, density, adhesion or cohesion, condition, repairs and conformity with approved documents.
Do you provide vermiculite fire spray across India?
Yes. We support suitable project enquiries from Mumbai across Indian states and union territories, subject to project requirements.
Related Passive Fire Protection Services
Request a Vermiculite Fire Spray Proposal
Share structural drawings, member schedules and section factors, required fire-resistance periods, critical temperatures, substrate and primer details, environmental exposure, finish requirements, quantities, programme, inspection specification and project location.
Call +91 96999 90424 | sales@relifire.com | Contact Reliance Fire Protection Systems