Isotherm Insulation is punted as an eco-friendly polyester type insulation. The Isotherm is manufactured with new PET fibres. We do not believe the Isotherm Insulation is eco-friendly because the new PET fibres effectively mean more pollution at the end of the insulation lifespan.
However, had Isotherm been manufactured with recycled PET bottles like Fanta, Coke etc., it would be endorsed as eco-friendly insulation even if the product had to be disposed of in 30 years. The insulation would have given many years of energy saving.
We have contacted several polyester insulation manufacturers to clarify whether or not the polyester insulation is recyclable. However, non of the manufacturers are currently recycling polyester insulation materials.
The Isotherm Is No Longer SABS approved; however, the Platinum Fibre Polyester Insulation is SABS Approved.
Isotherm Insulation vs Glasswool Insulation
There is a significant difference between Isotherm Polyester Insulation and Glasswool insulation products.
- From a safety point of view, glass wool insulation is far superior.
- Glasswool insulation is specified for hospitals and schools as well as any high volume traffic area.
- Although manufacturers of polyester insulation types claim the insulation to be eco-friendly, this is not true. Glasswool products like Aerolite Insulation are manufactured from recycled glass and self-sustainable silica sand.
- Glasswool products like Think Pink Aerolite are classified as non-combustible Class AA 1/1, whereas polyester insulation and cellulose insulation are classified as combustible Class bb 1/2.
Isotherm Insulation Benefits
- Cooler in summer. Reducing cooling costs.
- Warmer in winter. Improves indoor temperature 3-5 degrees
- Saves energy on heating and cooling. When used in conjunction with wood burning fireplace or any other form of heating.
How Is Isotherm Installed?
We must ensure that insulation products are fitted between the roof trusses. At all times, the Isotherm must be fitted snugly between the roof trusses ensuring there are no air gaps. Unlike the glass wool types of thermal insulation, polyester is a bit more complicated because we cant cut polyester with a typical wood saw. Some installers use large scissors to cut the polyester Isotherm to fit between roof trusses. Unfortunately, this process is time-consuming. We have seen some professional installers tearing the polyester Insulation.