Does your application call for a calcium silicate, non-combustible panel with high thermal insulating properties? One of our Marinite panels may be the answer. Marinite was originally developed for use on ships to prevent fires from spreading. This energy efficient panel is completely inorganic, non-corroding and immune to decay. Even if Marinite is immersed in water for extended periods, it will not disintegrate.

Select the Right Marinite Panel for Your Application

marinite comparisons

Marinite A & C

Marinite boards are heat treated formulations for use in conveying, containing and forming molten aluminum and other non-ferrous metals. Applications include holding furnace linings, tips for continuous casters, transition plates, rings, plugs, baffles, troughs, spouts, floats and filter boxes.


Marinite I

  • Has a density of 46 lbs/ft3
  • Sanded on two sides
  • Can be easily fabricated into any size or shape with standard wood working tools
  • Designed for applications up to 1200°F
  • Available in thicknesses from1/2" to 3" in panels up to 4' x 8'
  • UL Listed

Marinite I panels are ideal for covering large areas quickly and economically, such as:

  • Oven walls and linings
  • Fire stops and doors
  • Fire training burn buildings
  • Insulating housing for dryers
  • Industrial furnaces
  • Structural insulation enclosures
  • Heat baffles / Insulating parts
  • Cable Trays


Marinite P

  • Has a density of 60lbs/ft3
  • Sanded on two sides
  • Provides higher resistance to damage while retaining thermal insulating properties
  • Withstands higher physical and mechanical pressures
  • Available in thicknesses from 1/2" to 2" in panels up to 4' x 8'

Marinite P panels allow for high service temperatures making it the perfect choice for:

  • Platen press insulation
  • Back up insulation in rotary kilns, steel ladles and tundishes
  • Foundry blow and core plates
  • Insulated component parts


Marinite M

Oven dried formulations of BNZ boards are used in a variety of heat insulating processes, fire protection and machined parts. Selection is commonly based on a balance between strength and insulating qualities. Examples include oven walls and linings, soldering insulation, fire doors, fire training burn buildings, cable trays, personnel protection, and as USCG-approved insulation for marine ships and off-shore rigs. Back-up insulation applications include ladles, torpedo cars and tundishes in the iron and steel industry, lime and cement plant rotary kilns, and aluminum die cast holding furnaces.


Marinite CF

When casting aluminum, Marinite CF, a non-asbestos calcium silicate carbon fiber reinforced insulation board, is the clear choice. Manufactured with today’s modern casting technology in mind, Marinite CF Transition Plates are proven to last longer than other competitive materials while leaving an exceptionally clean casting surface.

Advantages of Marinite CF

  • Low Shrinkage
  • Thermal Shock Resistant
  • Easily Machined
  • Non-wetting
  • Available in Sheet Form or as a Machined Part