Stone wool insulation fitted between wall framing

Stone Wool Insulation

Stone wool insulation is a high-density mineral insulation material manufactured from volcanic rock such as basalt. It is designed for applications where fire resistance, acoustic control, mechanical strength, and temperature stability are critical.

Stone wool insulation products like Rockfibre are supplied by Insulation Warehouse are commonly specified for commercial, industrial, fire-rated, and acoustic insulation systems where performance and safety requirements are higher than standard building insulation.

160kg Rockfibre stone wool insulation board for fire-rated and acoustic applications
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160kg Rockfibre Boards

Price range: R2 782,00 through R3 095,00 incl. VAT
120kg Rockfibre insulation boards for fire-rated and acoustic applications
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120kg Rockfibre Boards

Price range: R2 601,00 through R2 753,00 incl. VAT
100kg Rockfibre insulation boards for fire-rated and acoustic applications
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100kg Rockfibre Boards

Price range: R2 270,00 through R2 420,00 incl. VAT
80kg Rockfibre insulation boards for fire-rated and acoustic applications
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80kg Rockfibre Boards

Price range: R1 737,00 through R1 828,00 incl. VAT
60kg rockfibre insulation board for fire-rated and acoustic applications
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60kg Rockfibre Boards

Price range: R1 117,00 through R1 794,00 incl. VAT
160kg Rockfibre wired stone wool insulation mat for high-temperature and fire-rated industrial applications
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160kg Rockfibre Wired Mats

Price range: R2 916,00 through R3 509,00 incl. VAT
120kg Rockfibre wired stone wool insulation mat for fire-rated and high-temperature applications
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120kg Rockfibre Wired Mats

Price range: R2 320,00 through R3 157,00 incl. VAT
100kg rockfibre wired mat mineral wool insulation for high temperature fire rated and acoustic applications
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100kg Rockfibre Wired Mats

Price range: R2 024,00 through R2 896,00 incl. VAT
80kg rockfibre wired mat mineral wool insulation for high temperature fire rated and acoustic applications
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80kg Rockfibre Wired Mats

Price range: R1 927,00 through R2 464,00 incl. VAT

What Makes Stone Wool Different

Stone wool differs from lightweight insulation materials due to its rigid structure and higher density, allowing it to maintain performance under extreme conditions such as high temperatures and exposed installations.

Key characteristics of stone wool insulation include:

  • Non-combustible material with high fire resistance
  • Excellent acoustic absorption due to dense fibre structure
  • Stable thermal performance across a wide temperature range
  • High mechanical strength for rigid board applications
  • Resistance to moisture and long-term dimensional stability

Common Applications of Stone Wool Insulation

Stone wool insulation is typically used in environments where safety, durability, and performance are essential.

Fire-Rated Insulation Systems

Stone wool is widely used in fire-rated walls, ceilings, ducts, and service penetrations due to its non-combustible properties.

Industrial Insulation

High-density stone wool products are used for insulating industrial equipment such as boilers, vessels, tanks, and pipe systems where temperature resistance is required.

Acoustic and Soundproofing Applications

The dense fibre structure of stone wool makes it effective for noise control in plant rooms, studios, commercial buildings, and industrial facilities.

Commercial and High-Performance Buildings

Stone wool is often specified in commercial projects where higher performance standards apply compared to residential insulation systems.


Stone Wool Product Types

Stone wool insulation is available in different product formats to suit specific applications:

  • Rigid stone wool boards – used for flat surfaces, fire-rated systems, and industrial insulation
  • Stone wool wired mats – flexible insulation for pipes, vessels, and curved industrial equipment

Stone Wool vs Glasswool Insulation

While both materials fall under the mineral wool category, they serve different purposes.

  • Stone wool insulation is selected where fire resistance, rigidity, acoustic performance, or high-temperature stability is required.
  • Glasswool insulation is typically used for lightweight thermal and acoustic insulation in residential and commercial building applications.

For lightweight building insulation, view our glasswool insulation range.
For an overview of both materials, refer to the mineral wool insulation page.


Why Choose Stone Wool Insulation from Insulation Warehouse

  • Specialist stone wool products for industrial and fire-rated use
  • Rigid boards and wired mats available in multiple thicknesses and densities
  • Suitable for commercial, industrial, and acoustic applications
  • Supplied by a dedicated insulation distributor

Related Insulation Pages