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. In fact 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. In addition Isotherm is SANS compliant with the 145mm thick insulation exceeding the R-value requirements for the Western Cape region. Additionally Isotherm is Eco-friendly and can be recycled itself. In addition Isotherm will improve indoor temperature 4-8 degrees. Resulting in a cooler home in summer and a warmer home in winter reducing the need for heating and cooling.

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Isotherm Dust free and Allergy Free Insulation For A Lifetime Of Home Comfort

Improve Indoor Temperature 4 - 8 Degrees



Isotherm Installers

Installing roof insulation in the roof space is simple in some cases. However installing the Isotherm Correctly is a totally different ball game. Having been in the roof insulation for more than 30 years we have seen many disasters. Specifically with unqualified installers. In particular the roof space has an abundance of factors that can end in disaster. Namely Ceiling damage or even broken water pipes can end in a flooded home.

As a result qualified Isotherm Installers ideally should be employed. Furthermore registered companies will have insurance to cover themselves in the event of an incident that causes damage. We are proud to say that as Isotherm Installers with full comprehensive insurance we have not submitted a claim in 30 years. For this reason our insulation installers are a well trained and undergo regular training sessions.

All work undertaken by us is covered by our 5 year workmanship guarantee. For the best DIY prices check out or price list.

Isotherm Summer Benefits

In summer the roof space of all homes 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 up the home from the inside.

This is not when you want to heat in your home.

So how will the Insulation remedy this problem?

Insulation installed by Expert Insulation Installers will be fitted correctly.

Ceiling insulation must be installed directly on the ceiling surface.

Fitting insulation over the beams is a waste of money.

Ceiling Insulation reduces heat flow by as much as 90%.

Improving temperature in the home by 4 to 8 degrees.

Isotherm Winter Benefits

The roof space of the home is freezing cold in winter.

As we know cold air sinks.

Heating in the home in winter is almost wasted unless one is 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 freezing cold roof and the warmer home.

Correctly insulated homes will reduce heat loss via the ceiling as much as 90%.

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.

Creating an insulation barrier between the cold windows and the warmer interior.

Heat from the sun is free energy to warm up the home.

Reducing condensation and the potential for mold. Reduce the impact of condensation by installing roof ventilation as an added benefit.

Isotherm Applications

This insulation is very popular as the insulation is pleasant to touch. In fact, because Isotherm is Dust Free, Allergy-Free and Itch Free it is ideal for the DIY installer as well.

This makes the insulation a pleasure to use as there is no itch factor. As the Insulation is manufactured from PET bottles. It is therefore classified as an Eco-friendly polyester insulation.

For  DIY Installers Buy Direct And Save

Find Out How To Install Isotherm With Our DIY Video

Isotherm Insulation for Homes

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 is the best available.

In fact the Isotherm improves temperature  in the home 4-8 degrees. In other words insulated homes will reduce the need for heating and cooling as a result of the 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.

Isotherm Loft Room Insulation

Isotherm insulation is perfect for Loft Rooms. Therefore Isotherm is our product of choice as Loft Room Insulation. The 30-year manufacturer guarantee means that 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 is installed the loft temperature improves substantially.

Ideally thermal insulation should be installed at the building stage in these applications. Having said that 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.

Isotherm Drywall Insulation

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 an DIY Videos for the home installer.

Eco-friendly Isotherm

Manufactured from pollution that will affect the earth and ocean for many years. In fact, 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 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. In fact, 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.

Dust Free and Allergy Free Insulation

This insulation is a polyester type 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 fibers. As a consequence, this insulation is also itch free.

Isotherm Sound Proofing Insulation

In fact, this insulation is not the best for soundproofing unless a number of 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.

Get The Best Out Of Your 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 having 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 us rubber seal to stop the cold air entering the home. Also, long door sealers can be fitted to the base of the doors to prevent cold air blowing into the home. On very cold days if you have very heavy curtains that are great as they will act as an 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 path of least resistance and flow out of the home.

Isotherm Fire Rating

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

In fact, 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 very cold in winter. This is, unfortunately, where condensation starts to play a big 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 home. Secondly, seal all windows from allowing cold air into the home. Thirdly install heavy curtains and make sure they are closed properly at night. As a result condensation and mould on the ceiling will be reduced substantially.

Making the home warmer in winter and giving the family a much healthier home to live in. For homes with serios condensation and mould problems we recomend installing whirlybird roof ventilators to remove cold air damp from the roof space in winter.

What 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 moldy 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 that the piece that was drenched. Remove the wet piece of insulation and lay it down to dry in a warm place.

Does Not Support Vermin

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

Most homes were we remove insulation because of rat infestation it is usually found in the finely shredded paper insulation products like cellulose fiber.

How Does Isotherm Thermal Insulation 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.
  • The reason for this is that the heat in the roof space is pressure and when the insulation is laid over the beams the hot air simply 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.