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Vermiculite Board | Insulation, Fire protection

Low Cost | Good Insulation | High Strength | Excellent Fire Protection

Wedge W-VCL high temperature insulating boards are manufactured with base material exfoliated vermiculite and inorganic binders. 

The material is free of asbestos and organic substances. Vermiculite is an aluminium-magnesium layer silicate, which bloats to ultralightweight granulates through heating and is processed to boards, bricks and shaped parts through a compression mould procedure. Good quality Vermiculite board for thermal insulation, ladle furnace, steel structure building fire protection at low price made Wedge India.


• High thermal shock resistance.

• Can be applied in the furnace at fire side.

• Fireproof, Non-combustible A1, excellent fire protection.

• No smoke nuisance during heating-up.

• Low thermal conductivity.

• High electrical resistance.

• Easy handling and installation.

• High thermal resistance.

• Good chemical resistance to acids, alkalis and exhaust gases.


• Industrial furnace construction for thermal insulation.

• Hot face directly in the furnace and backup insulation.

• Widely used in Aluminium Melting furnace, Steel ladle, tundish, torpedo ladle, glass melting as backup insulation.

• Household appliances: Night storage heaters, Boilers, Hearths, Vessels and tanks.

• Fireplace linings, hot stove.

• Resistant to CO and CH4 atmosphere;

• Non wetted by fluid aluminium, kryolite and flouride.

Download the Technical Data Sheet of Wedge Vermiculite Boards

Wedge Vermiculite Insulation Boards
Vermiculite Insulation Board

What is Vermiculite ?

Vermiculite is a naturally occurring mineral that expands when heated. Expanded vermiculite has unique and versatile characteristics; it is lightweight, provides energy savings when used as insulation, it is non-combustible, highly absorbent, pH neutral, inert, non-reactive to all but very strong acids and compressible.


These desirable characteristics allow vermiculite to be widely and beneficially used in industrial and commercial applications including: packaging, fire protection, refractory and high temperature insulation, loose fill insulation, lightweight concrete screeds, plasters, friction linings, special coatings, swimming pool liners, animal feedstuffs and horticultural potting mixes. Technically, vermiculite is a hydrated magnesium iron aluminium silicate mineral in the form of shiny flakes, which are usually golden brown to blackish in colour.


Vermiculite is expanded (exfoliated) by heating the crude flaky mineral. The exfoliated (expanded) granules are many times greater in volume than before heating and are more concertina shaped, more golden to light, greyish brown sometimes silvery gold in colour and are much less dense.


Vermiculite Board Thickness:

  • 20 MM Thick

  • 25 MM Thick

  • 30 MM Thick

  • 35 MM Thick


Vermiculite Board Applications:

  • Fire Prevention

  • Heat Insulation

Builsing Fire Protection Vermiculite.png

Vermiculite Boards for Building Fire Protection

FIREPROOF VERMICULITE BOARD are boards that can be produced in various size and densities. It is the ideal choice of insulation materials used in industrial furnaces, fireplace, boards of metallurgy, construction, petrol, chemical, machinery, power, light industries. Fireproof vermiculite board characterises high temperature resistant, low density, long durability, ease of process and installation etc. When it is heated, any gas that would be hazard to human will not occur, no smoke, not toxic, no smell, A grade fireproof board.


Physical and Chemical Property
Appearance: gold yellow / Grayish white
Smell: no
Volatility: no
Solubility: not soluble in water and organic solution
pH value: 7-9
Density: 500-1000 kg/m3
Service temperature: 1050 degree Celsius
Stability: stable at normal conditions
Activity: can be corrupted by strong acid, and no hazards occur in the corruption. No change will happen as it is be heated under 600-1050 degree Celsius temperatures.
Max service temperature: 1100 degree Celsius
Toxic content: none, no use board can be discharged as common construction waste, no chemical hazard to environment.

Heat Loss Calculator
Insulation, Raw Materials, Refractories, Building Materials

Insulation U R Value Heat Loss Calculator

Right Insulation Materials Selection to get most feasible commercial solution. Achieving right combination of Insualtion materials and thickness is most complex decision to achieve lowest heat loss with minimum insulation thickness at various applications and temperatures. Wedge India helps its client to select right combination of Insulation material for various applications based on R Value heat loss calculator software, u p k calculations to find right insulation thickness, achieve target cold face temperature, and minimise heat losses at very low price. We also make energy audits as per requests from our customers. R value calculator delivers best insulation thickness r30 r38 r19 r49 r21 r60 for home and buildings to save cost at high efficiency.

Get Thermal Calculation, Insulation Thickness, Heat Loss

Benefits of Heat Loss Calculator

  • Get right Thickness of Insulation.

  • Find right Insulation Materials Selection.

  • Get lowest cost combination of Insulation System.

  • Get better heat loss reduction decision.

  • Clear view of Energy Saving potential and Energy Audits.

  • Low cost and optimum Furnace Design.

  • Best Energy cost reduction possibilities.

Insulation U R Value Heat Loss Calculator.png
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