As you may know, refractory bricks are one of the widely found refractory materials in the refractory industry but what about insulation bricks? Many of you have thought it is the same, but you are wrong, there’s a slight difference between refractory bricks and insulating fire bricks. Hence, in order to help you find the difference we have compelled a cut & clear article. So without further ado let’s go through it.

Refractory Bricks:

What are Refractory Bricks?

Refractory Bricks

Fire bricks, also known as refractory bricks and hard fire bricks, such types of refractory bricks have high mechanical strength that extends the service life. In addition, refractory bricks can withstand high temperatures over 2100℃ which makes them suitable for industrial applications like furnace lining. Thus, they are built to withstand extreme temperatures and harsh conditions, making them an essential component in a number of industries like construction, steel & iron industry.

What are the Uses of Refractory Bricks?

Refractory bricks are widely used in high-temperature industrial applications such as furnaces, kilns, boilers, and incinerators. They protect the metal or other materials inside the container by providing thermal insulation, preventing heat loss, and preventing damage to the metal or other materials. 

What are the Benefits of Refractory Bricks?

The following are the benefits of refractory bricks, have a look.

– High-temperature resistance

– Chemical resistance

– Dimensional stability

– Low thermal conductivity

– Wear and erosion resistance

Insulation Bricks:

What are Insulation Bricks?

Insulation Bricks

Insulating firebricks are one type of soft brick constructed from refractory ceramic components, a mixture of alumina and silica sand, these materials have the capability to tolerate extreme temperatures and have a reduced thermal conductivity. Fire bricks that are insulated are optimal for the construction of imaginative forms and tailored niches. Insulative fire bricks are feather-light and can be separated by handheld instruments like a chisel, drill, saw, etc.

Aside from that, there are a number of different types of insulating fire bricks available on the market. These include non-combustible fireclay insulation bricks, airtight fireclay insulation bricks, as well as mullite insulation bricks.

What are the Uses of Insulation Bricks?

Insulating fire bricks are commonly used as linings or insulation layers in industrial kilns. However, given the substantial porosity, feeble structure, low strength, inadequate resistance to different kinds of erosion and lack of wear resistance of the refractory products, their use is limited to heat insulation on kilns and other high-temperature thermal equipment. In general, it is unsuitable for heavy load-bearing components and work lining.

What are the Benefits of Insulation Bricks?

The following are the benefits of insulation bricks, have a look.

– Energy efficient 

– Lightweight 

– High-temperature resistance

– Cost-effective

– Versatile uses

– Easy to shape

Refractory Bricks vs Insulation Bricks:

The following are the three key distinctions between an insulation brick and a refractory brick:

Thermal insulation property: At a normal temperature of 350°C, insulating fire bricks’ thermal conductivity can range from 0.2 to 0.4 w/m.k, while refractory fire bricks’ thermal resistance is greater than 1.0 w/m.k. Thus, insulating fire bricks have better insulation properties than refractory fire bricks.

Refractivity: In comparison with insulating fire bricks, refractory fire bricks have a greater refractoriness than 1400 °C, while insulating fire bricks have a refractoriness of less than 1400 °C. As a result, refractory fire bricks are the best choice when high temperatures are required.

Density: Compared with refractory fire bricks, insulation fire bricks have a density of more than 2.0g/m3, while insulated fire bricks have a thickness of 0.8-1.0g/cm3. Due to its superior density, refractory brick beats insulation bricks in terms of compactness


We hope you understand the difference between refractory bricks and insulation bricks. So in order to help you find the best refractory bricks and insulation bricks, the Ganesha team is always there to assist you. Ganeshas is one of the top refractory manufacturers in Ahmedabad, having years of expertise in meeting several industrial application needs of various industries. Thus, if you are looking for quality-approved refractory materials and mechanical products, please contact us right away.