Ceiling Insulation

ecose earthwool ceiling insulation
ceiling insulation types johannesburg



Ceiling insulation products and materials become the heat flow barrier between your roof tiles and ceiling boards. It prevents heat from passing through. Keeping you cooler in summer and warmer in winter throughout the year.

Furthermore, well-designed and insulated residential homes, that use insulation that meets South African requirements, will benefit from year-round comfort.

Additionally, it will cut your heating and cooling costs by up to 45%. Which in turn, reduces greenhouse gas emissions while saving you money. Choosing the best type of ceiling insulation for your situation is an important factor too.

Climatic conditions influence the appropriate thickness needed for the product to be effective. Establish whether you are trying to keep the heat in, out or both. Different types of ceiling insulation products are effective against daily temperature fluctuations as well as seasonal changes.

ceiling insulation types
knauf roof insulation



When choosing the best ceiling insulation products in South Africa, there are a few main categories to choose from. Below is a list of the 8 most commonly used residential ceiling insulation products.



Every insulation product comes with an R-value. Which differs according to which thickness of insulation you require. The R-value of the product determines the product’s ability to resist heat flow. The higher the R-value and density the more effective the material will be.




Ceiling insulation in Pretoria is excellent for resisting convected and conducted heat. The air pockets inside the insulation traps the heat. As a matter of fact, thermal resistance works the same way. It makes no difference which way the heat flows through it.


  • 45% of cooling and heating energy can be saved with ceiling insulation in Pretoria
  • 20% additional cooling and heating energy with wall insulation
  • 5% on winter costs with the right floor insulation used on your home
ceiling insulation johannesburg
ceiling insulation pretoria



Another important factor when it comes to insulating your home or office in South Africa is the design technique. Use thick curtains to block out the morning and afternoon sun in summer. Otherwise, you could get a reverse effect, essentially creating an oven effect.

Moisture problems like condensation can be eliminated by installing reflective types of ceiling insulation in Johannesburg. Furthermore, it can help assist with waterproofing your home or office.




Ceiling insulation materials like cavitybatt have excellent sound absorption properties. Products with higher density perform the best and are excellent for soundproofing a room or office. It is best to get the installation done during construction if possible.




All new homes must be insulated according to the new building regulations. Furthermore, they must achieve a certain R-value in order to be compliant. Ceilings, floors, and roofs have a small thermal resistance on their own. However, not enough to be compliant with the sans 10400-xa building laws. You will need to install a product with the right R-value for your climatic region.

Read more on the sans 10400-xa building laws.

ceiling insulation installers
glassfibre ceiling insulation



Nowadays everyone is trying to save money at home. As a matter of fact, one of the easiest ways to reduce the cost of electricity is to have insulation installed.

“Get up to 40% savings on your heating and cooling bills monthly”

There are many factors that affect the overall cost of ceiling insulation in South Africa. Depending on the chosen brand, the difficulty of the installation, and the overall size, the cost in South Africa will vary. There are also a few different types of ceiling insulation products to choose from when determining the price per square meter in South Africa.


Consider things like:


  1. Price
  2. R-value
  3. Density
  4. Thickness
  5. Chemicals


The ceiling insulation cost will be different for each product. They all have their advantages and disadvantages.


  • Knauf is a high-quality earthwool and much less itchy than traditional fiberglass products and makes use of eco-friendly binders.
  • Fiberglass like aerolite is well priced but itchy to work with.
  • Cellulose is the cheapest of the products. It also contains the most chemicals and the weight of it on your ceiling boards can cause a ceiling collapse.
  • Isotherm is the most expensive of the products with the lowest R-value but is also the most eco-friendly and people-friendly product.






Knauf is made to the EUROCLASS specifications. Moreover, it is made in Germany and used in many countries around the world. It’s an extremely high-quality earthwool insulation product.

The binders and resins in the product use ECOSE technology. Additionally, it is chemical and dye-free. Knauf has made a massive step forward in the fiberglass insulation industry trademarking the new technology.

Read more on Knauf




Aerolite is made of 80% recycled glass. It saves more than 100X the energy consumed and CO2 emitted from manufacturing. Additionally, the growing energy crisis and cost has forced a need to conserve energy and reduce electricity usage. Aerolite helps you save by limiting heat loss in winter and heat gain in summer.

Read more on Aerolite




Isotherm is made from recycled plastic bottles that would otherwise go to landfill sites and dumps. As a matter of fact, Brits have taken these plastic bottles and made a green recycled insulation product. Isotherm is more expensive per square meter than fiberglass and cellulose.

Read more on Isotherm




Cellulose insulation is made from recycled newspapers, usually post-consumer waste newsprint. Around 15% – 20% is a fire retardant such as boric acid, ammonium sulphate. Cellulose fibre insulation also has a settlement rate of up to 25%. Unfortunately, you can’t get cellulose insulation pricing from us as we don’t install this product.

Source: Cellulose Insulation Problems


For more information on ceiling insulation in South Africa, give one of our branches a call. We cover Johannesburg, Pretoria, Durban, and Cape Town.

Contact Us For More Info



When installing any type of ceiling insulation in Johannesburg, avoid leaving any gaps. Even the smallest gap in the insulation can decrease thermal performance. You need to install the material snugly between the beams. Additionally, you must not leave any gaps in the insulation once installed.

Furthermore, ceiling insulation in Pretoria will seal joins and holes in the reflective insulation, even tape it up if necessary. You can leak a large amount of heat through the ceilings, floors, and walls. Insulate these areas properly. When installing a product, leave enough space around downlights and transformers because overheating can cause a problem.

Wall insulation needs to fit snugly around the door and window frames. In really cold locations, you should have thermal breaks around metal frames to reduce heat loss. You should insulate the internal walls in your house as well. This will soundproof the room and give less echo.




If you’re a homeowner or a building owner, you know the importance of energy efficiency and proper temperature regulation. One crucial factor in achieving these goals is proper roof insulation. It helps keep heat in during the winter and out during the summer, making your space comfortable year-round. However, installation can be a challenging task, which is why hiring professional ceiling insulation installers is essential.


1)  Why Hire Professional Ceiling Insulation Installers?


While some homeowners or building owners may try to install it themselves, hiring professional ceiling insulation installers is highly recommended. They are experts in their field, trained and certified to install materials correctly. They know how to choose the appropriate material and the right R-value for your specific location and climate.

When you hire professional ceiling insulation installers, you can rest assured that your product will be installed correctly and efficiently, ensuring maximum energy savings and comfort. They have the necessary equipment and knowledge to safely and efficiently install your material, protecting you from accidents or damage that may occur during the process.


2) Choosing a Reputable Company


When choosing ceiling insulation installers, it’s important to do your research and select a reputable company in your area. Look for a company with a proven track record of success and positive reviews from previous clients.


3) Choose the Right Insulation Material


One of the benefits of hiring a professional ceiling insulation installer is their knowledge of the different types of insulation materials available. They can help you choose the right type of roof insulation for your specific needs and budget. There are various insulation materials available, such as fiberglass, cellulose, or foam. Each material has different properties and benefits, and a professional installer can help you determine which one is right for your space.




Vapour barriers such as sisalation or spunsulation can be used to keep moisture off ceiling insulation materials. Moisture could cause a decrease in the product’s insulating performance. Ceiling insulation installers in Pretoria will use reflective insulation vapour barriers where condensation may occur.

Never install loose-fill insulation on a 25-degree slope or more. Due to it being loose and not in a roll form like Aerolite or Knauf, it can’t maintain its thickness on angles.




Insulating your home or office is crucial for maintaining a comfortable indoor temperature and reducing energy costs. While there are several types of roof insulation products available, roll-form insulation stands out as the most effective option for long-term use.


1) Maintains Consistent Thickness


One of the significant benefits of roll-form insulation is its ability to maintain its thickness over time. Unlike loose-fill insulation, which can settle and reduce in thickness by up to 25%, roll-form insulation retains its original thickness, ensuring maximum R-values throughout your home or office. This is particularly crucial for areas with slopes and strong winds that can displace loose insulation, leading to heat loss and energy inefficiency.


2) Efficient and Effective


Roll-form insulation is also highly efficient and effective in creating a barrier against heat transfer. Its unique construction allows for easy installation, making it the go-to choice for many professionals. The tight fit of the insulation in the walls, roof, and floors reduces the loss of heated or cooled air, thus minimizing energy consumption and cost.


3) Sustainable and Eco-Friendly


As more people become conscious of the environment, it’s essential to consider roof insulation that is sustainable and eco-friendly. Roll-form insulation is made from renewable materials such as recycled glass or polyester fibers, reducing the environmental impact while still providing the necessary protection for your home or office.

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