fiberglass insulation south africa

Fiberglass Insulation Prices

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Fiberglass insulation is one of the most popular types of insulation worldwide. It is made from glass fibers and is used to insulate homes, offices, and other buildings. In South Africa, it has gained popularity due to its excellent insulation properties, affordability, and durability. This article provides a comprehensive guide for South Africa.

What is Fiberglass Insulation?

Fiberglass insulation is a type of thermal insulation that is made from glass fibers. The fibers are spun from molten glass and are then woven into a material that is lightweight, durable, and flexible. The insulation is designed to trap air pockets between the fibers, which helps to reduce the transfer of heat between the inside and outside of a building.

Benefits of Fiberglass Insulation

There are several benefits to using fiberglass insulation in South Africa. These include:

  • Energy efficiency: Excellent insulator, which helps to reduce the amount of energy needed to heat or cool a building. This can result in lower energy bills for homeowners and businesses.
  • Durability: Resistant to moisture, mold, and mildew, which makes it a durable choice for insulation.
  • Fire resistance: Non-combustible, which means it does not burn. This makes it a safe choice for residential and commercial properties.
  • Soundproofing: Used for soundproofing, which is ideal for areas that require noise reduction, such as home theaters and music studios.

Types of Fiberglass Insulation

There are 3 main types of fiberglass insulation:

  • Blanket: One of the most commonly installed types of insulation, blanket insulation comes in the form of rolls which is rolled out between the beams.
  • Batts: Pre-cut insulation panels that are designed to fit between the framing of walls, floors, and ceilings. They are available in a range of sizes and can be cut to fit irregular spaces.
  • Blown-in: Blowing loose insulation into an area using a special machine. This type of insulation is ideal for insulating attics and other hard-to-reach areas.

Fiberglass Insulation Products in South Africa

In South Africa, numerous manufacturers and suppliers offer a variety of fiberglass insulation products. Among the popular options available are:

  1. Knauf: This manufacturer provides products for both residential and commercial buildings that are designed to offer high thermal performance while also being eco-friendly.
  2. Aerolite: This brand offers exceptional thermal and acoustic insulation through its range of products, which are available in various thicknesses and densities to suit different building applications.
  3. Energylite: This type of industrial product is created from non-combustible fiberglass that has been bonded with an inert thermosetting resin. This produces a strong, resilient product that can be used in batts and blankets for any application up to 450°C.
  4. Factorylite: Specifically designed for commercial and industrial roofing insulation, Factorylite is made from high-quality, non-combustible, and flexible fiberglass. An inert binder ensures the product is lightweight, safe, and resilient. It is typically installed compressed between straining wires/steel purlins and the roof and cladding sheeting.
  5. Rockwool: Made by spinning or drawing molten minerals or rocks such as slag and ceramics, Rockwool is a versatile fibrous material with many applications, including thermal insulation, filtration, soundproofing, and hydroponic growth medium.
  6. Cavitybatt: This insulation product is specifically used in construction to insulate walls in residential and commercial buildings. Cavitybatt is made from high-quality glass wool and has a glass tissue facing on one side, making it easier to handle and more rigid. It has been specially developed for use within steel frame structures, timber frame buildings, and drywall systems.

As each product has its own unique features and benefits, it’s essential to consult with a professional insulation contractor to determine which option is best suited for your specific building and insulation needs.

How Much Does Fiberglass Insulation Cost in South Africa?

The cost of fiberglass insulation in South Africa can vary depending on several factors, including the type of insulation, the R-value, and the size of the area to be insulated. On average, fiberglass insulation can cost anywhere from R80 to R120 per square meter. However, it’s important to note that difficult installations may come at a higher cost. It’s recommended to obtain quotes from various insulation companies to determine the cost of installation for your specific needs.

Installation Guide

Fiberglass insulation is easy to install and can be done by homeowners or professionals. Here are the steps for installing it:

  • Measure the area: Measure the area that needs to be insulated and purchase the appropriate amount of insulation.
  • Prepare the area: Prepare the area by removing any old insulation or debris.
  • Install the insulation: Install the insulation by placing the batts or blowing in the insulation.
  • Seal the area: Seal the area with a vapor barrier to prevent moisture from entering the insulation.


Fiberglass insulation is a popular and cost-effective way to insulate homes and other buildings in South Africa. It is durable, energy-efficient, and easy to install. Whether you are looking to reduce your energy bills or create a soundproof space, this product is an excellent choice.


Is it safe to use in your roof?

Yes, it’s safe when installed and used properly.

How much does fiberglass insulation cost?

The cost of fiberglass insulation varies depending on the type of insulation, the R-value, and the size of the area to be insulated.

fiberglass insulation south africa

Fiberglass Insulation Prices

Select Your Area Below to Contact a Professional: