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Insulation Materials For The Roof – Find The Right Insulation

The insulation materials have different properties and therefore can also be used differently. The material density, the heat transfer coefficient, the resistance of the water vapor diffusion, and the sound insulation are among other important aspects. Here you will find an overview of the most common insulation materials and their applications.

General information about the insulating materials of the roof insulation

In the case of missing or poor roof insulation, up to 30 percent of the total heat loss through the roof can occur. To counteract this heat loss, roof insulation is recommended. Which type of roof insulation is best for your home depends on the exact area of application and must be taken individually. Depending on this, the right insulation material is chosen. With energy held you will find the right specialist for your project.

The following insulating materials are suitable for roof insulation: Styrofoam / EPS, wood fiber, rock wool, hemp, sheep wool, Styrodur / XPS and polyurethane (PUR). Which properties the insulation materials possess and which advantages and disadvantages they bring you in the following.

Insulation materials and their areas of application for a roof insulation

To insulate the roof, a variety of possible insulating materials is available. The insulating materials need not be waterproof in the roof insulation, as well as they usually do not have to be very pressure resistant. First, you should decide which insulation is right for your roof. It is between the up, intermediate – and below the rafters, and the insulation of the attic floor distinguished.

Styrofoam / EPS – the foam insulation

The insulation material Styrofoam or EPS (expanded polystyrene foam) is a synthetic-organic insulation material. The basis for the production of EPS is a petroleum-derived plastic that can be deformed by heat.

It is the most widely used insulation material because it has good insulation properties and is inexpensive. EPS is supplied in the form of polystyrene insulation boards. The insulation material is used, in the intermediate rafter insulation or as insulation boards in the attic, ie the insulation of the top floor ceiling.

Wood fiber – a versatile insulating material – also for the roof

Since the 1990s, the insulating material wood fiber is produced industrially. For this fir, spruce and pine are crushed and mixed with water to a wooden pulp. This is then pressed into wood fiberboards, which are well suited for insulation in the roof. The insulation boards are particularly suitable for the intermediate rafter insulation in the roof, but equally well for the insulation of the top floor ceiling and the rafter insulation.

Rock wool – the cheap insulation for the roof

The insulating material rock wool has the same properties as glass wool. They differ only in the composition of the base material. The insulation stone wool generally has very good properties for insulation. The insulating material is used for roof insulation in the form of mats or boards. Rock wool can be used for any insulation from the roof.

Hemp – the alternative insulation material

The insulating material hemp is an insulating material consisting of natural fibers. Due to its low tendency to rot, its safety and its resistance to pests, hemp is an excellent insulating material suitable for sustainable insulation.

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To ensure fire protection, boron salt is added to the hemp, making the insulation in the roof with hemp versatile and safe. Hemp is offered in addition to the usual form of insulation boards and insulation mats also loose for a Stop damming.

Sheep wool – the very light roof insulation

The ecological factor in insulation is becoming increasingly important for builders today. When insulating older properties, insulating materials from natural raw materials are increasingly being used. Sheep wool has been used as an insulating material for roof insulation for 20 years. In the roof, this insulation is mainly the intermediate rafter insulation.

Styrodur / XPS – the eternal insulation for the roof

The insulation material Styrodur, also called XPS (extruded polystyrene), is particularly widespread, especially for insulation in new buildings. The insulating material is made of oil and is used in the form of rigid foam boards for insulation. The insulation is offered by different manufacturers and exists under many names. One way of distinguishing the insulating material is the different coloring of Styrodur (BASF = green, DOW Chemical = blue, Austrotherm = pink).

Cost of insulation materials

The costs for the roof insulation differ depending on the size of the area of application, the type of insulation and the insulating material. Above all, the margin in the cost of insulating materials is enormous.

The cost range for insulating materials that are suitable for roof insulation is between 5 and 50.

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