Thermal insulation for roofs | Some methods of thermal insulation of ceilings

The process of thermal insulation of roofs is a process that prevents heat from reaching the roofs through heat exchange by placing a material that absorbs heat or different rooms in the place, and this process is very important in countries with a high temperature always, as it is used to isolate heat from homes, and is also used in countries with high temperatures. Low temperature to insulate heat from surfaces. Cork is one of the best types of insulation, and cork is called thermal insulation for surfaces.

Benefits of thermal insulation for roofs

There are many benefits that benefit a person who intends to make a thermal insulator for roofs, including:

  • Roof insulation layers maintain the temperature of the building and are not affected by temperatures, whether the temperature is low or high in the atmosphere.
  • Protects the building or house from cracking and cracking in concrete.
  • Thermal insulation of the roof reduces exposure to harmful rays such as UV rays.
  • Insulation saves electricity because it reduces the use of fans and air conditioners.

How to make a thermal insulator for roofs

There are several ways to make thermal insulation for surfaces, which are very popular and widespread, especially in Western countries, and are safe, non-flammable, not expensive and not harmful to the environment, the most important of which are:

Rock wool boards

This insulation is made of a natural mineral material, which is basalt, which is similar to fiberglass or glass wool panels in its external form, and it is used as heat and sound insulation as well.

This type has a major drawback, and it does not have the ability to absorb water. Over time, its density and its insulation work decreases.

Rock wool boards should not be used in unstable places in climate or countries whose temperature is always high because it does not have the ability to insulate in these climatic conditions.

Insulation with polyurethane or foam

This method is considered one of the best methods of thermal insulation due to the lightness of the foam and its appropriate density. It works as a thermal insulator for the surfaces without causing any harm to the human being and his environment. It is also not flammable because it is resistant to fire, and the foam has the ability to reach difficult places that are difficult to reach in thermal insulation. For surfaces it is placed in the narrowest and smallest places.

There are two types of polyurethane that are manufactured in the laboratory through chemical reactions and they are (solid polyurethane sheets) and (sprayed polyurethane).

Fiberglass panels or glass wool

This insulation is a variety of panels, some of them are solid, some are flexible, and some are cylindrical, and most of them are used to insulate water and gas tanks and pipes in countries where the weather is cold or hot, and fiberglass is used in the construction process in developing countries. Where it is placed in concrete materials, it reduces the weight on the building and isolates heat from the building.

Glass wool is a fiberglass known as fiberglass, and this material is completely harmless and does not cause any fires and is a good thermal insulator for surfaces.

When dealing with and installing fiberglass, care must be taken, precautions should be taken, and protective clothing should be worn so that glass shards do not spread and harm the person's lungs and eyes.

Polystyrene plates

Polystyrene is one of the highest global insulators that take first-class water, sound and heat insulation and is used in regular and European countries. It is one of the best and best types used in thermal insulation of roofs.

They are panels made of organic chemicals that are in the form of blocks and then cut and installed. They are characterized by having a nice and smooth surface and insulating sound and water at the same time, and this is not available in other insulating materials, and it is one of the most expensive thermal insulation prices for surfaces.

How to insulate roofs from heat

In order to insulate the surfaces and protect them from heat, you must follow some of the following steps:

You must first clean the surface of dust well and fill the gaps and voids in it.

Then the tools that will be used in the isolation process, such as the spray device, are prepared.

Then a thickness of 3-5 cm of insulation material is sprayed on the surface.

You must make sure to reach the nooks and crannies.

Then an acrylic material is placed to keep the insulation layer for as long as possible.

How to insulate surfaces from heat with lime

This method is expensive and impractical and is called insulating surfaces with white cement and lime:

  • The surface is well cleaned.
  • Buying five sacks of white cement, five sacks of white lime and one gypsum sack.
  • All materials are mixed with water until the consistency is liquid.
  • Then the liquid is spread on the surface.

The best thermal insulator for roofs above tiles

When making surface insulation over tiles, you need several raw materials extracted from glass, fibers, chemicals, and drainage.

Urea formaldehyde foam

This foam was used in ancient times, but it was banned due to the emission of some gases from urea formaldehyde, which was later found to cause great harm to humans and is no longer used by factories and industrial facilities.


This material is extracted from recycled paper such as newsprint, then the paper is converted into fibers, and ammonium sulfate is mixed with cellulose and used in insulation. One of the advantages of this method is the cheapest way to insulate surfaces from heat.


This material has a light density and works to fill all the gaps and holes, so it is frequently used in insulation.

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