Isotherm is thermal and acoustic insulation. It has been specifically designed to help keep the temperature in your home constant throughout the year while reducing energy consumption. Thus saving you money.

Benefits of Isotherm:


  • isotherm insulation installersNon-Toxic – 100% people-friendly
  • Maintenance free
  • Non-allergic polyester (no fibreglass or chemicals)
  • Fire tested to classification B/B1/2
  • Ceiling insulation saves energy
  • Complies with SANS 10400-XA
  • Can save up to 21% on your monthly electricity bill
  • Reduces cooling and heating costs by between 40% and 70%
  • Soft texture and save to install
  • Cool in summer
  • Warm in winter
  • Lightweight
  • Continued savings


Green Polyester Insulation


It is green polyester insulation that is designed to be people-friendly. The polyester has been thermally bonded. It has absolutely no chemicals like cellulose fibre and no itchy fibres like Aerolite. In fact, it is so people-friendly you could actually sleep with it like a duvet if you wanted too.

Recycled Insulation Pays Itself Off


It will pay itself off in just under 2 years. By reducing your heating and cooling bills and creating a comfortable living environment for your family and office workers. We have isotherm installers in Durban, Johannesburg and Pretoria.

  • 25% to 30% reduction in heating costs
  • 25% to 30% reduction in cooling costs


What Is The Price Of Isotherm?


eco-friendly insulation polyester ceiling insulation

There is a different price for each thickness that you can choose from. The thicker you go the higher the isotherm price will be. Give us a call and let us give you a price on installing it in your roof at home.

Using the correct thickness is important, the new building laws in South Africa have been set and different areas in South Africa need to achieve a certain r-value in order to be compliant.

If you find you are getting a cheap isotherm price in comparison to what we are quoting you, make sure you are getting the right thickness installed.

How Is it Made?


Isotherm is polyester insulation, made from recycled PET bottles that form a plastic resin. Polyester is very pleasant to work with because it does not contain chemicals like cellulose fibre or itchy fibres like Aerolite. Polyester will not absorb any water or moisture, and will most definitely dry if exposed to small amounts of liquid. It is a strong polyester product and will not disintegrate or break easily and withstands handling while it is transported and while our installers are installing it in your roof.

Fire Classification


It has achieved a B/B1/2 fire classification rating and is safe to use in residential and commercial buildings. If a fire were to break out, it would self-extinguish if the source of the heat is removed. It does not contribute to the spread of flame. It is still considered a good idea to keep it away from heat sources or open flames.

Reduces Heating And Cooling Costs


If you are looking for ways to reduce your power consumption. Then having it installed by our professional installers is a great way to start. You can use it as a geyser blanket and wrap your hot water pipe with it too. This will decrease energy consumption even more. Being a polyester, it is resistant to condensation. It is also an allergy-free and the most eco-friendly roof insulation South Africa has to offer.

How Long Does Isotherm last?


As it is polyester, it has an extremely long product life. It will under no circumstances degrade over time. Furthermore, it is also recyclable. Have the material professionally installed to help reduce the power you consume in your home and office. Maintain a comfortable living environment throughout the year. We have isotherm installers in Durban, Johannesburg and Pretoria. They would be happy to assist you with more information on this product!

Eco-Friendly Recycled Insulation


Lately, the world is becoming more environmentally conscious. People are looking to be more eco-friendly using recycled materials. Products like isotherm has become extremely popular over traditional insulating materials. They have done an amazing job of taking plastic bottles and converting them into polyester insulation in South Africa. This product is made solely from recycled materials and contains no chemicals and itchy fibres and is 100% eco-friendly!

How Does PET Become Recycled Insulation?


Millions of plastic bottles (also known as PET) get sent to dump sites all around South Africa every year. These plastic bottles are a hazard to our environment. Isotherm has taken up the challenge of gathering as many of these bottles as they can. They find and process them into plastic pellets. These pellets are then woven into recycled polyester sheets. The sheets are then run through very expensive machinery to produce the best-recycled insulation we currently have in South Africa.

View our full range of products: 135mm | 100mm | 75mm | 50mm

Isotherm Johannesburg and Pretoria


Johannesburg, Abbotsford, Auckland Park, Bassonia, Bedfordview, Boskruin, Braamfontein, Broadacres, Bruma, Bryanston, City Centre, Craighall, Crown Gardens, Darrenwood, Douglasdale, Eldorado Park, Emmarentia, Fairland, Fourways, Gallo Manor, Germiston, Glenhazel, Greenside, Honeydew, Houghton, Hurlingham, Hyde Park, Inanda, Kensington, Kyalami, Laezonia, Linden, Lonehill, Lyndhurst, Melrose, Melville, Meredale, Midrand, Mondeor, Morningside, Morningside Manor, North Riding, Northcliff, Norwood, Oakdene, Observatory, Ormonde, Parkmore, Parktown, Parkview, Randburg, Rivonia, Roodepoort, Rosebank, Ruimsig, Sandown, Sandton, Saxonwold, Tedderfield Ah, The Hill, Turffontein, Vereeniging Nu, Weltevredenpark, Westdene, Westrand, Windsor.

Isotherm Durban


Amanzimtoti, Ballito, Durban, Hillcrest, Hilton, Howick, Kloof, Margate, Mooirivier, Mtunzini, Pietermaritzburg (PMB), Pinetown, Port Shepstone, Richardsbay, Scottburgh, Umhlanga, Westville