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Roof Insulation

Home is where the heart is, but a house without insulation can be an uncomfortable place to live. In fact, there are many types of insulation. It’s essential to make sure you brace your home or office building against the elements, hot or cold. Today, we’ll be discussing the different types of insulation and how each one can benefit your home.

From standard blankets to the chemical miracle of spray foams, it’s a field with many options, and each one has its place in a building. Are you ready to transform your home? Good, because we certainly are! Let’s get started.

Types of Insulation: Making An Informed Decision

Insulation is, arguably, as essential to a house as electricity or running water.

Walls, floors, and ceilings that aren’t adequately insulated against the elements tend to let the cold or heat in sooner than you’d imagine.

The colder a house gets, the more you’ll find yourself spending on heating or warm showers. Similarly, a hothouse without insulation could lead to increased air conditioning costs or windows being left open. Depending on where you live, numerous energy problems come from a lack of insulation. Insulation can help you achieve that.

It’s an investment, and while many people tend to put it off, you’ll know when it’s time to make yours.

But, with so many options out there, which is the right one for you?

Roll Form Insulation The Most Used Type Of Insulation

Installing roll type insulation products will give years of energy-saving and home comfort. Importantly roll insulation is not affected by dust and does not readily absorb water.

Think Pink Aerolite Insulation

The new Aerolite is regarded as one of the most advanced roof insulation products on the market. With the new TEL Fiberizing technology. Aerolite insulation is regarded as one of the safest insulation products available. The World Health Organisation has given the new Aerolite a 111 rating.

For this reason, Aerolite is bio-soluble and is now recommended as the insulation of choice for Hospitals, Schools, Clinica and Shopping malls. In fact, only Aerolite can be installed in any area with high traffic volumes of people. Contact us for all your insulation requirements.

5 Star Aerolite Roof Insulation


Knauf Ecose Thermal Insulation

Ecose Thermal Insulation imported from Germany. This Insulation product is manufactured to the highest international standards as well as the European manufacturing standards.

Available in South Africa and installed by us. This premium insulation is state of the art. The highest NRC (Noise Reduction Coefficient) as well as the highest Fire rating A/ 11.

This insulation cant burn. In addition to this, the R-value is perfect for this region. The 135mm Ecose Thermal Insulation is SANS compliant for this region. Ecose Thermal Insulation Highest Grade insulation in the world.

5 Star Knauf Ecose Roof Insulation

Isotherm Insulation


Isotherm Insulation is a polyester type of insulation. This insulation material is dust-free. In addition, the Isotherm will outlast the lifespan of most homes as the insulation has a 30-year guarantee. Find out more about Isotherm here.

No longer one of the best thermal insulation products for roofs. However, the 145mm Isotherm is SANS compliant for the Western Cape Region.

2.5 Star Isotherm ceiling Insulation

Think Green Insulation

Think Green Insulation is also a polyester type of insulation. Therefore this insulation is regarded as eco-friendly as well. Think Green is also dust-free. Find out more here.

However, we do not install the Think Green Insulation as it is far under the specification for the Western Cape region. However, it can be installed as a top-up in under-insulated homes.

Fabufill Insulation

Fabufill Insulation again this is also a polyester type insulation. Therefore as with the other polyester insulation products is also regarded as eco-friendly. Thus even dust free and allergy insulation. Read more on fabufill here.

Platinum Fiber is well-made insulation that is unfortunately under the specification for the Western Cape region.

Blanket insulation is one of the most common forms of this product. Available at most hardware stores and cut to size, this remains one of the simplest ways to insulate a house.

Blanket insulation is available in two primary forms:

  • Batts: The only real difference between batts and rolls are that batts are pre-cut to specific dimensions. Typically, these fit into walls with cavities measuring 92 5/8″. If you’re working with these dimensions, pre-cut batts are perfect for you.
  • Rolls: Rolls are a better option for people working with unusual wall dimensions or a house with different space sizes. A long, uncut version of a batt can be trimmed down to whichever size you require.

Consider using this type of insulation around joists or studs.


IsoBoard Ceilings

Isoboard Thermal Ceilings are undoubtedly one of the best innovations for ceilings. The IsoBoard Ceilings are produced in thicknesses from 25mm to 50mm. Importantly these modern ceilings have great thermal properties are not affected by water leaks.

For this reason, IsoBoard Ceilings are one of the most popular ceiling options for new homes. For prices of Isoboard or a quote to install Isoboard, Contact us.

Isoboard XPS Ceilings do not have enough thermal insulation properties to insulate the home on its own. However, with one of the roll form insulation materials, they work well together for an enhanced thermal insulation benefit.

Isoboard XPS Thermal Ceilings
Isoboard XPS Ceiling boards

Rigid Foam Board

Rigid foam boards are a popular option for insulating floors, basements, or sometimes walls during renovations.

These stiff polystyrene boards benefit from having billions of tiny bubbles built into them. As a result, they are perfect for insulating and, what’s more, are also relatively thin.

Depending on your requirements, rigid foam boards also withstand high temperatures very well.

Rigid foam boards come in sheets, which can be cut down to size, much like stiff blanket rolls. These boards range in thickness from 1/2 to 2 inches.


Rigid Foam Insulation Boards
rigid foam boards


This is also known as blown-in insulation, and it’s exactly what it sounds like.

The insulation material is broken up into small pieces by a machine. This is hooked up to a powerful hose used to spray the processed insulation into roofs and small gaps in walls. In some instances, the insulation can also be poured onto the ceiling.

This is an excellent choice for insulating already-made areas or corners of your home with strange shapes. Or so, one would think. But, if all things were equal, it could be good insulation.

However, spraying insulation products into the roof space is not an exact science. For example, what is the thickness of the insulation sprayed in? How does one guess what the thickness is?

It’s available in various forms, from fibreglass to cellulose and even mineral wool.

The only problem is that loose-fill insulation is affected by wind and water leaks. This is more problematic with cellulose as this paper absorbs water until the inevitable ceiling collapse.

This is one of the main reasons we will not install cellulose or even the fibreglass blow-in type insulation. In most cases, these products are affected by wind movement in the roof space. All blown insulation must have cones installed over the lights to protect the insulation and to prevent fire in the home. Read this article and see what happens to the cones and the potential for fire. The cones shown in this article are from the many homes where we remove these types of insulation for roofs.

Blow In Paper Insulation Cellulose Absorbs Water Causing Ceiling Colapses
cellulose fibre removal
Never Install DownLight Cones They Are A Fire Hazard
cellulose insulation downlight cones can cause roof fires

Reflective Foils (Sisalation)

Sisalation and Radenshield foils are designed to reflect heat away. Reflective foils reduce the heat in the roof space. As a result, the home will also be slightly cooler in summer. 

Most forms of insulation are geared towards absorbing as much of the heat that would enter as possible. However, it helps to reflect heat from the house instead of absorbing it.

Reflective insulation works in almost the exact opposite way. This insulation reflects heat from the house instead of absorbing it.

Reflective foils reflect unwanted heat from the roof but importantly it is also a form of waterproofing.

Installed Sisalation Foil

Spray Foam

As we mentioned earlier, every home is unique.

What that means, as a homeowner, is that there will be certain hard-to-reach areas that sheet or roll insulation can’t reach.

This is when you’ll need a more versatile product. This is a job for spray foam.

Of all the types of insulation available for a home, sprayable foam is one of the most effective.

A combination of chemicals is heated up and sprayed through a high-pressure hose as they pass through the tip of the tube; these chemicals mix and create an insulative substance that absorbs oxygen and expands rapidly.

Insulation is sprayed into tight or hard to reach gaps. The resultant expansion fills the gap with insulation material, creating a perfect fill. A bonus is that it’s also airtight, allowing fewer contaminants or moisture to enter.

A word of warning: Importantly, Spray foam insulation must be installed by a professional with the right equipment. The chemical reaction needed isn’t safe for breathing in.

Spray Foam Insulation

And, Now You Know

Insulation: it’s not something many people talk about, but it’s as vital to home. Firstly insulated homes will cover the cost of insulation in three years on energy saving alone.

Secondly, the right types of insulation can transform a room from entirely frigid to warm and cosy. Finally, some added protection under your floors can stop moisture in a basement in its tracks.

Whatever the purpose, one thing is clear: insulation is what makes a home livable.

At Roof Insulation, we pride ourselves on installing the best, most cutting-edge insulation products on the market.

If you are interested in learning more about the benefits of our roof insulation services? Get in touch with us today, and let’s talk about changing your home for the better.