100kg Rockfibre Boards

In stock

Price range: R2 020,00 through R2 158,00 incl. VAT

100kg Rockfibre insulation boards are high-density mineral wool boards designed for applications where maximum rigidity, fire resistance, and acoustic performance are required. This density is typically specified in demanding commercial and industrial environments where boards must remain stable under load while providing non-combustible insulation performance. All products on this page are 100 kg/m³ boards, with thickness selected as a variant.

Price shown is per pack. Boards are not sold individually. Each pack contains multiple boards depending on thickness. Select a thickness below to see how many boards are included per pack and the total coverage (m²).

Est. Delivery: 20 July – 21 July

Minimum order quantity: 3
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Description

100kg Rockwool Boards

100kg Rockfibre boards are high-density mineral wool insulation boards manufactured for demanding fire-rated and acoustic insulation applications. This density provides increased rigidity, allowing the boards to maintain shape and performance in more robust construction systems.

These boards are commonly specified in industrial buildings, fire-rated wall and ceiling assemblies, and areas where insulation must deliver consistent acoustic control and fire resistance under more severe conditions.

Rockfibre boards are manufactured from stone wool, a type of mineral wool insulation used in fire-rated and acoustic applications.

View all Rockfibre insulation products and available densities.

Available thicknesses & boards per pack

100kg Rockfibre boards are supplied in standard 1200 × 600 mm board size, with pack quantities varying by thickness:

  • 40mm – 10 boards per pack
  • 50mm – 8 boards per pack
  • 75mm – 5 boards per pack
  • 100mm – 4 boards per pack

Pack quantities vary due to board weight and handling considerations.


100kg Rockfibre Board Specifications

  • Density: 100 kg/m³
  • Material: Mineral wool insulation
  • Format: Rigid insulation board
  • Standard board size: 1200 × 600 mm
  • Very high rigidity and compressive strength
  • Non-combustible insulation material
  • Suitable for fire-rated insulation systems
  • Enhanced acoustic performance in rigid applications
  • Designed for demanding industrial and commercial use

Typical applications

100kg Rockfibre insulation boards are commonly used in:

  • Fire-rated wall and partition systems
  • Plant rooms and service shafts
  • Industrial equipment enclosures
  • Lift motor rooms and riser shafts
  • High-performance acoustic barrier systems
  • Areas requiring rigid, non-combustible insulation

Why choose 100kg Rockfibre boards?

  • Higher rigidity than 60kg and 80kg boards
  • Maintains shape in vertical and high-stress installations
  • Improved acoustic control in rigid systems
  • Suitable for demanding fire-rated environments
  • Long-term stability in commercial and industrial settings

Need help choosing the right density?

If you’re unsure whether 100kg Rockfibre boards are required for your application, our team can help you select the correct density and thickness based on performance requirements.


Related Rockfibre Products


Common Applications

Additional information
100kg Rockfibre Boards100mm, 40mm, 50mm, 75mm
Shipping & Delivery

Delivery Information

At Insulation Warehouse, we provide fast, reliable delivery across our service network so you get the insulation you need without delays. We are an online insulation store and do not operate as a walk-in retail outlet. All orders are placed online, processed immediately, and delivered directly to your home, site, or business.


Delivery Timeframes

  • Most standard orders are delivered within 1–3 business days
  • Fast dispatch from our storage facilities
  • Orders are shipped as soon as payment is received

Specialized Product Lead Times

A few specialized or less common items may require additional preparation before dispatch. These can include:

  • Industrial densities
  • Custom-sized or made-to-order insulation
  • Foil-faced products
  • Commercial or non-standard rolls

When these items require extra time, we’ll let you know the expected delivery window.


Delivery Network

We deliver insulation products throughout:

  • Johannesburg
  • Centurion
  • Pretoria

These areas form our primary delivery network, ensuring quick turnaround times for homeowners, installers, and contractors.

We can also deliver to surrounding suburbs — just send us your address if you’re unsure.


Delivery Process

  • Orders leave our storage facility once paid for in full
  • Delivery updates and timelines are provided
  • Large orders may arrive on pallets to ensure product protection

Fast, Reliable Service

Our goal is to provide the quickest, most convenient delivery service possible. Whether you’re insulating a home, office, or development, our streamlined logistics ensure your materials arrive safely and on time.