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Whether you are a professional insulation contractor or the owner of a major architectural firm, having an affordable and reliable ceramic fiber insulation board on-hand can be a real time-saver.

Because each of these different products comes with unique advantages and features, even the cheap insulation boards can often provide high-quality solutions to specific structural challenges.

When choosing among the many available ceramic board insulation products, several factors can come into play.

  • best Overall

  • Inexpensive

  • Best Budget

  • Best Value

  • Maximum Protection

  • Refractory board rated to 2300 degrees Fahrenheit
  • 16 lbs/ft³ density
  • 15” x 24” x 3/4” (2 Pcs/Pkg)
  • Low thermal conductivity, low thermal mass
  • An excellent choice for target walls, floors, and front plates

What is the difference between ceramic fiber insulation board and ceramic fiber insulation?

When many people hear the term “ceramic fiber insulation,” they often imagine those soft rolls of wall insulation that typically reside between the roof rafters of home attics.

The tiny, individual ceramic fibers that comprise these massive rolls of insulation are incredibly sharp, which means that they can cause skin and respiratory disorders if the insulation contractor is not extremely careful during the installation process.

Ceramic fiber insulation board is a much safer alternative.

Manufacturers fabricate these products through a revolutionary wet-forming process using special fibers and binders to create a vacuum-packed, board-like product that is easy to manipulate, cut, shape, and even drill. 

They specifically design ceramic board products as alternative insulation solutions for high-temperature situations.

These boards come in many different brands, shapes, temperature ratings, dimensions, densities, and compressive strengths.

Many can withstand temperatures exceeding 2000 degrees Fahrenheit, and some can even resist chemical attacks and thermal shock waves.

Typical applications for ceramic fiber insulation board include:

  • Industrial equipment
  • Hot face lining
  • High temp gaskets
  • High temp seals
  • Molten metal covers
  • Chimney linings
  • Castable linings
  • Linings in furnaces
  • Refractory lining
  • Heat shields
  • Thermal barriers
  • Fire protection
  • Combustion chambers
  • Heat shields
  • Boiler ducts
  • Boiler stacks
  • Wood-burning stoves
  • Pizza ovens
  • Pellet stoves
  • Kilns
  • Furnaces

What is the difference between calcium silicate board and ceramic board insulation?

A calcium silicate board is a premium insulation product that manufacturers specially design to withstand continuous high operational temperatures.

Manufacturers create this white, free-flowing, powdery substance by inducing a chemical reaction between calcium oxide and silica. 

Because this substance is lightweight, fire-resistant, extremely durable, and easily malleable, calcium silicate products are a popular choice among industrial-grade piping and equipment insulation contractors.

what is the difference between ceramic fiber insulation board and calcium silicate board

A calcium silicate board differs from the more conventional ceramic fire board in its more extreme waterproofing capabilities.

Manufacturers fabricate calcium silicate boards with a proprietary mixture of fine silica, cement, cellulose fibers, and specially selected fillers and binders.

The final product is a high-temperature insulation board that is moisture-resistant, corrosion-resistant, and exceptionally robust even under extreme heat and pressure.

When exposed to high-moisture conditions, the calcium silicate boards completely recover without loss of tensile strength.

For most professional insulation contractors, a refractory fiber board made of ceramic materials works perfectly fine.

Benefits of ceramic board insulation include:

  • Low thermal conductivity
  • Low heat storage
  • Lightweight
  • High tensile strengths
  • Low deformation percentages
  • Resistant to chemical attacks
  • Resistant to thermal shock
  • Resistant to oil damage
  • Easily cut, drilled, machined
  • Comes in a variety of densities
  • Durable in high temperatures
  • Cheap insulation boards

Our top choices of ceramic fiber insulation board

#1:

Key Features:

  • Refractory board rated to 2300 degrees Fahrenheit
  • 16 lbs/ft³ density
  • 15” x 24” x 3/4” (2 Pcs/Pkg) with many other sizes available
  • Low thermal conductivity, low thermal mass
  • An excellent for target walls, floors, and front plates

This top-rated ceramic fiber insulation board by Lynn Manufacturing is our preferred choice for the construction and repair of combustion chambers, boilers, and furnaces.

This vacuum-cast refractory fiber board withstands temperatures up to 2300 degrees Fahrenheit while providing a 16 lbs/ft³ density rating. 

For Insulation contractors just learning how to install ceramic fiber board, this Lynn brand ceramic board is the perfect solution.

It’s extremely easy to cut, drill, and machine. If you’re looking for cheap insulation boards that are also high-quality, Lynn Manufacturing products rarely disappoint.

#2:

Key Features:

  • The perfect replacement for all Hearthstone Phoenix wood stoves
  • Withstands temperatures up to 2100 degrees Fahrenheit
  • Approximately 14'' x 5'' x 3/8''
  • Super wool fiber insulates better than conventional ceramic fire board alternatives

Lynn Manufacturing fabricates its Replacement Hearthstone Ceramic Board with a Superwool fiber for high-temperature applications up to 2100 degrees Fahrenheit.

Its rigid ceramic coating offers enhanced durability and improved insulation capabilities compared to other name brand options.

Also, Superwool products do not require special health and safety labeling for being potentially carcinogenic.

#3:

Key Features:

  • Refractory fiber board rated to 2300 degrees Fahrenheit
  • 20-24 lbs/ft³ density
  • Aluminosilicate refractory ceramic fiber insulation board
  • Compressive strength at 25% deformation
  • Loss of Ignition (LOI) at 1832 degrees Fahrenheit

Simvac manufactures this high-temp insulation board with a proprietary mixture of vacuum-pressed refractory fibers and binders.

Its unique composition provides excellent mechanical strength, low thermal conductivity, and long-lasting durability even after years of consistent usage.

With a compressive strength at 25% deformation, this innovative and fireproof fiber board withstands temperatures of up to 2300 degrees Fahrenheit.

#4:

Key Features:

  • Refractory fiber board rated to 2600 degrees Fahrenheit
  • 20-24 lbs/ft³ density
  • Low organic content and vacuum processed
  • Aluminosilicate refractory ceramic fiber insulation board
  • Compressive strength at 25% deformation

This ceramic fiber insulation board is our top pick for wood-burning stoves, ovens, furnaces, and kilns.

Manufactured with a proprietary mixture of refractory fibers and binders, it boasts a compressive strength at 25% deformation and withstands exceedingly high temperatures of up to 2600 degrees Fahrenheit. 

Upon initial use, the board turns brownish in color and gives off a slight odor. Once the binder completely burns out, the board becomes pure white and odorless.

#5:

Key Features:

  • Refractory fiber board rated to 2732 degrees Fahrenheit
  • High density up to 37.5 lbs/ft³
  • Resistant to chemical attacks and thermal shock
  • Aluminosilicate refractory ceramic fiber insulation board
  • Class A1 fire resistance

This fireproof fiber board is truly top-of-the-line.

Not only can this high-temperature insulation board withstand temperatures of up to 2732 degrees Fahrenheit, but it’s also tough, robust, non-toxic, lightweight-and perhaps most notably-optimally resistant to chemical attacks and thermal shock.

For Insulation contractors first learning how to install ceramic fiber board, this BXI product is easy to use, cut, drill, and machine.

  • best Overall

  • Inexpensive

  • Best Budget

  • Best Value

  • Maximum Protection

  • Refractory board rated to 2300 degrees Fahrenheit
  • 16 lbs/ft³ density
  • 15” x 24” x 3/4” (2 Pcs/Pkg)
  • Low thermal conductivity, low thermal mass
  • An excellent choice for target walls, floors, and front plates

Final tips

While each of our recommended ceramic board insulation products offers individualized advantages and features that are truly remarkable, your final selection will depend largely on the problem you are trying to solve.

For a high-quality, all-purpose product that is also rather inexpensive, the Lynn Manufacturing 2300F Rated Ceramic Fiber Board might be a perfect choice.

For maximum protection against thermal shocks and chemical attacks, we recommend the BXI Ceramic Fiber Thermal Insulation Board.

Hope that you have found this helpful!


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