isotherm pretoria
isotherm insulation johannesburg


Isotherm is an eco-friendly insulation product that does not contain chemicals or fibreglass. It makes it a great choice for consumers. It’s a healthy insulation product to have installed in your roof. Additionally, Isotherm is an eco-friendly, non-allergic option. People who suffer from allergies will benefit from the use of this product.

It also controls the temperature in your home. Keeping it more consistent. Moreover, keeping it at the temperature that’s comfortable. Once installed, it will reduce the amount of electricity used to heat and cool your home. Not to mention, it reduces power consumption.




Isotherm has many advantages. Temperature regulation is one of the more important ones. It keeps it more consistent throughout the day. As a matter of fact, isotherm insulation keeps it at the temperature you want for comfort. This can help you decrease the amount of energy you use in a residential, commercial or industrial property.


  • 30-year manufacturer warranty
  • Safe and non-toxic
  • Eco-friendly insulation
  • No maintenance
  • No need for protective gear
  • It won’t cause allergic reactions
  • Chemical and Dust Free!
  • Non-combustible
  • Massive electricity savings
  • Complies with SANS 10400 standards
  • Save anywhere from 40% up to 70% in energy costs
  • 21% saving on your electricity bill
  • Warm in winter
  • Cool in summer




ThicknessR-valueDensityClimate Zone 
75mm1.5310kgTop Up Layer
50mm1.0210kgTop Up Layer
40mm0.8210kgTop Up Layer


Isotherm Insulation DIY Prices:

145mm | 135mm | 100mm | 75mm | 50mm | 40mm




As you can see in the video below, isotherm is non-combustible and does not contribute to the flame spread. As a matter of fact, all insulation products have a melting point. The flame spread is what’s important. Moreover, it has a “0” flame spread index.

Being non-combustible is a huge benefit when it comes to your safety and your family’s safety. The fire safety rating is B/B1/2 so this makes it safe and ideal for homes and business properties.

It is also CHEMICAL FREE! You can have an insulator installed with a good fire rating, but when it burns it releases toxic fumes. This would be horrific if you and your family were still in the house trying to evacuate. You would be breathing in poisonous fumes.


Isotherm Insulation Fire Test/Rating - Home Insulations




Isotherm has become a popular choice for installers. Furthermore, many homeowners have replaced their old insulation products with isotherm already. The reason for this is that it is safe to use and it’s environmentally friendly.

For homeowners looking for a DIY option, Isotherm insulation is perfect. It’s clean and easy to work with. The rolls also come pre-cut in two sizes. 750mm wide and 1.2m wide. Not to mention it feels soft to the touch and does not release dust. It is good for people who suffer from allergies and asthma. Additionally, it contains no harmful additives.




isotherm thermal insulation

Isotherm can resist water and moisture so it’s ideal for the summer with higher humidity conditions. It also handles water damage better than other insulating products. It can dry out and insulate effectively if affected by slight dampness.

It’s not hygroscopic and does not absorb water. Furthermore, hygroscopic products can cause a ceiling to collapse if they get wet and heavy. Moreover, if exposed to a leak in your roof or a burst geyser. Isotherm has the ability to dry out and continue to insulate.

Installers and homeowners prefer using this popular product. The price is slightly higher than some of the other products. Its definitely worth the price, so give our professional installers a call in Johannesburg, Pretoria, Durban and Western Cape.




There are many benefits to using isotherm in residential and commercial properties.  Firstly, you can recycle this type of insulation. In addition, the cooling and heating efficiency of the recycled product is the same as a brand new product.

Furthermore, it does not support the spread of flame. Additionally, it’s environmentally friendly because it stops wasted rubbish from collecting in landfills. It’s cost-effective to install and will save you on your electricity bills throughout the year. The isotherm cost in Johannesburg and Pretoria is not bad considering the money you will save.




isotherm uninsulated roofIt will save you 25% to 30% on your heating and cooling costs month after month. Furthermore, in a short period of just two years, you can get a return on your investment.

At the same time, consistent savings on your energy bill year after year. Isotherm insulation is high-quality and eco-friendly and this is why it continues to gain popularity.

It is fast becoming the best insulation. Especially with so many people being more protective of the environment. This product is out-performing the selection of old technology, traditional products.




Let’s start off by explaining what PET is. The manufacturing process uses plastic bottles called PET bottles. The use of these bottles prevents a substantial amount of plastic filling up landfill sites. This eliminates some environmental hazards.


  • Converted into plastic pellets.
  • Then made into polyester sheets.
  • Costly machines are used to manufacture the product
  • Finally, isotherm is  made from recycled plastic bottles


For durability and strength, Isotherm makes use of a special resin binder. This results in high quality, recycled, eco-friendly insulation that is perfect for your home’s heating and cooling efficiency.

It’s not itchy and doesn’t contain any chemicals. Additionally, if exposed to moisture, isotherm can dry out. This product, won’t break. You can move it from one location to another. When our installers put it in your roof, you won’t have any damaged and non-usable materials before installation, this is our guarantee.




After our professional insulation installers in Johannesburg have finished installing it in your roof, you’ll start seeing saving right away. When your energy usage goes down it results in savings. It can be used on the geyser and water pipes for even more cost control.

As a matter of fact, you won’t have to worry about condensation with Isotherm. Or the development of bacteria and fungi like some insulation types. It’s also durable and lasts a very long time. It won’t degrade and it will continue to save on energy usage and costs. No matter what the weather is like, you’ll have a comfortable home with warmth or cooling. You can also read a quick guide to home insulation. Start saving on heating and cooling bills with isotherm insulation.