Isotherm Insulation is a polyester type of insulation for roofs. For some time, this insulation was a trendy type of insulation. Sadly the Isotherm Insulation is no longer SABS approved. 

Sadly Isotherm Is No Longer SABS Approved


An In Depth Look At Isotherm Thermal Insulation For Roofs

Isotherm Insulation is Dust Free and Allergy Free. As a result, Isotherm is our most popular insulation product. Having installed Isotherm for many years, we have total confidence in the thermal abilities of the insulation. Isotherm has a 30-year manufacturer guarantee. Furthermore, Isotherm is soft and smooth to touch. In particular, Isotherm, Insulation is perfect for allergy sufferers.

Once installed, Isotherm requires no maintenance. Besides, Isotherm is SANS compliant with the 145mm thick insulation exceeding the Western Cape region’s R-value requirements. Additionally, Isotherm is Eco-friendly and can be recycled itself. Also, Isotherm will improve the indoor temperature by 4-8 degrees. They result in a more comfortable home in summer and a warmer home in winter, reducing the need for heating and cooling.

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How To Install Isotherm DIY Video

All You Need To Know About Isotherm


Isotherm Insulation Summer Benefits

In summer, all homes’ roof space is filled with the sun’s radiant heat as the day heats up, so the heat in the roof space increases. This increase in heat becomes pressure in the roof space.

Reaching up and touching your ceiling space, you will find the ceiling to be warm to hot. This is like underfloor heating but above your head in summer. The radiant heat from the ceiling will heat the home from the inside.

This is not when you want to heat in your home. So how will Insulation remedy this problem? Insulation installed by Expert Insulation Installers will be fitted correctly.

Fitting insulation over the beams is a waste of money. Roofing insulation must be installed directly on the ceiling surface. In addition, ceiling Insulation reduces heat flow by as much as 90%. Thus, improving temperature in the home by 4 to 8 degrees.


Isotherm Insulation Winter Banefits

The roof space of the home is cold in winter as we know, cold air sinks. Therefore, heating in the house in winter is almost wasted unless sitting next to the heat source. A well-Insulated home will reduce the heat loss in the home substantially.

Insulation creates a barrier between the cold roof and the warmer home. Correctly insulated homes will reduce heat loss via the ceiling by as much as 90%. Thus, improving the internal temperature by 4-8 degrees. With heating, the entire house will warm up.

On cold rainy days, curtains or blinds must be closed. We are Creating an insulation barrier between the freezing windows and the warmer interior. The heat from the sun is free energy to warm up the home by reducing condensation and the potential for mould. Reduce the impact of condensation by installing roof ventilation as an added benefit.


Required Isotherm Insulation For Your Home

The Western Cape and Gauteng must install R-value 3.70. For this reason, installing 145mm Isotherm will achieve the required R-value of 3.70.

As we all know, thermal insulation for any industry is an absolute necessity. In fact, without home insulation, Global warming would be far more advanced than it is right now.  Indeed Isotherm is one of the best thermal insulation materials for homes. With the user-friendly, no-itch no-fuss Isotherm Insulation installed in your home, energy-saving and home comfort are the best available.

The legislation concerning thermal insulation as of 2012 is that all new homes must be insulated with SANS Compliant roof insulation. 

The Isotherm improves the temperature in the home by 4-8 degrees. In other words, insulated homes will reduce the need for heating and cooling due to improved temperatures. For this reason, Isotherm is recommended in all new homes.

Our products are available in all required thicknesses as well as two roll widths.


Installing Isotherm Insulation In Loft Room Space

Isotherm insulation is perfect for Loft Rooms. Therefore Isotherm is our product of choice as Loft Room Insulation. The 30-year manufacturer guarantee means the Loft Room will be cool for many years. Roof Insulation specializes in Loft Room Insulation.

The importance of Isotherm Insulation fitted against the walls and roof section in loft spaces is extremely important. Any loft space that is uninstalled is almost unlivable. Once Isotherm Insulation has been installed, the loft temperature improves substantially.

Ideally, thermal insulation should be installed at the building stage in these applications. Most contractors have no idea how important it is to insulate these areas 100% correctly. For this reason, Isotherm is ideal for builders to install as there is no itch factor with the insulation.


Installing Isotherm Insulation In Drywalling

This insulation is ideal for drywall insulation applications. In fact, the high tensile strength of the insulation is a great benefit. Therefore the chance of insulation collapsing is nil. Installing Isotherm Drywall insulation will reduce noise pollution between rooms.

Another benefit is that this insulation soft to touch and is itch-free. Therefore ideal for contractors as well as DIY experts. We have DIY Videos for the home installer.


Isotherm Insulation Is Eco-friendly

Pollution will affect the earth and ocean for many years. Plastic bottles (PET) will be pollution on our planet for up to 400 years. Therefore this insulation is regarded as one of the most Eco-friendly insulation products on the market—soft and smooth feel. There is no itch and no fuss with Polyester Insulation. Many insulation products claim to be Eco-friendly, but they have a host of chemicals in them. Isotherm itself can be recycled.


What Is Isotherm Insulation?

Isotherm insulation is a polyester type insulation. This product has great Thermal Insulation properties. In fact, as ceiling insulation, this product is one of the most highly rated insulated products. Manufactured to the highest standards and is SABS approved.

Furthermore, the 145mm thick Isotherm is SANS compliant. As we know insulation is not usually user-friendly. Most insulation types have a host of chemicals and side effects.

This insulation product is perfect for any home. In fact, your two-year-old can play with this insulation. This is one of the best insulation products on the market. As a matter of fact, this insulation will outlast the lifespan of most homes.


The Only Dust Free And Allergy Free Insulation For Roofs

This insulation is a polyester type of insulation. As a matter of fact, because of this, the product is not only dust-free. In fact, it is Allergy-free as well. Therefore there are no loose fibres. As a consequence, this insulation is also itch-free.


polyester insulation and SoundProofing

In fact, this insulation is not the best for soundproofing unless several layers are installed. However, there is most certainly a reduction in the noise. The insulation does not have a very good NRC Noise Reduction Coefficient. This insulation will make a difference in sound reduction. However, the Aerolite 135mm has the best NRC 1.1. This would then be our insulation of choice for soundproofing.


Isotherm 30-year Guarantee

Isotherm has a 30-year manufacturer guarantee. Therefore homeowners will have years of energy saving and comfort. Installed correctly this insulation will outlast the lifespan of most homes.

As a matter of fact, because this insulation is manufactured from what would be pollution on our planet for almost 400 years. Arguably the insulation will have a very long lifespan.


How To Get The Best Out Of Isotherm

The Isotherm Ceiling Insulation is the best investment for any homeowner. Let’s look at some ways to help you get the absolute best out of your insulation. Not all homes have double glazed windows; this would be first prize. Let us look at homes that have air leaks; now, this is a problem in winter. It is one thing to have your Insulation installed, but you don’t want cold air coming into the home.

Try and seal all windows and doors from air leakage. Wooden windows must be revamped or use a rubber seal to stop the cold air from entering the home. Also, long door sealers can be fitted to the doors’ base to prevent cold air from blowing into the home. On freezing days, if you have hefty curtains that are great, they will act as insulation against cold windows. Keep all window curtains drawn so that the warm air is not lost to the cold window.

Of course, in summer, if you are out, close curtains in rooms where the sun will shine through to get the best results. When you get home, open windows and allow a draft through the home, all unwanted heat will follow the least resistant path and flow out of the home.


The Fire Rating Of Isotherm Insulation

In fact, this insulation will not burn as this roof insulation has a BB/1/2 fire rating. The means that the insulation will not sustain a flame.
In fact, even if you put a blow torch to Isotherm, it will still not be able to sustain a flame. In fact, in most cases, even if an electrical wire is burning in the roof space.

Insulation will help reduce the risk of fire, making the home safer.


Reduce Condensation With Thermal Insulation

Condensation is a big problem in many of the older homes in the Cape Town area. It is a known fact that the Cape area, with its strong winds and driving rain, is freezing in winter. This is, unfortunately, where condensation starts to play a significant role.

How can we reduce the impact of condensation in our homes? Firstly start with a thick layer of this Thermal Insulation laid flat on the ceiling. This will help reduce the cold air entering the house. Secondly, seal all windows from allowing cold air into the home. Thirdly install heavy curtains and make sure they are correctly closed at night. As a result, condensation and mould on the ceiling will be reduced substantially.

We are making the home warmer in winter and giving the family a healthier home to live in. We recommend installing whirlybird roof ventilators for homes with severe condensation and mould problems to remove cold air damp from the roof space in winter.


What Happens If Isotherm Gets Wet

No big deal if Isotherm gets wet. The insulation is manufactured from PET plastic bottles. If the insulation gets wet, it will not get mouldy and need to be replaced in most cases.

Unlike paper insulation (Cellulose), this insulation does not absorb and hold water. The first warm day the ceiling insulation will dry naturally. If not remove and put in the sun for a few days and refit.

Will the insulation lose its insulation properties after being wet? Absolutely not. However, as soon as the insulation is dry, all will be back to normal if you find the drenched piece. Remove the wet piece of insulation and lay it down to dry in a warm place.


Polyester Insulation Does Not Sustain Vermin

In all my years of installing Roof insulation, we have never seen the effects of rats nesting in polyester insulation. The high tensile strength and also high density could be the reason. This insulation is almost impossible to tear along the length.

Most homes where we remove insulation because of rat infestation are usually found in finely shredded paper insulation products like cellulose fibre.


How Does Thermal Insulation For Roofs Work?

  • The Isotherm, when laid correctly, will reduce heat flow out of the home in winter by up to 90% through the ceiling into the roof.
  • Remember warm air rises, and with no insulation, the heat is lost to the roof space.
  • So if you are using any form of heating, you are burning money.
  • On the other hand, in summer, your roof space is like a furnace.
  • The ceiling temperatures in a home can reach up to 50 degrees. This is like underfloor heating but above your head in summer.
  • The Isotherm Insulation will keep your ceiling space cool so you will benefit by 4 to 8 degrees depending on the heat of the day.
  • The Isotherm Insulation is fitted directly against the ceiling boards in the roof space.
  • Please note the roof insulation must lay flat on the ceiling between the main beams.
  • The Isotherm must never be laid over the beams as this will make your home hotter in summer and colder in winter.
  • This is because the heat in the roof space is pressure, and when the insulation is laid over the beams, the hot air fills this gap and gets trapped.
  • In fact, any insulation not installed properly is a waste of money.
  • However, if Isotherm Thermal Insulation or any insulation is installed incorrectly, you have just tossed good money out of your window.