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Insulation Installation

Façade Insulation

Façade insulation prevents heat from leaking out of the house through the walls. Your home stays warm better in the winter, which provides more comfort and lower heating costs. In the summer,  it stays cooler in the house. You can install wall insulation in the cavity (the space between the inner and outer wall), or on the inside or outside of the walls of your home.

By applying wall insulation you can save about 15 to 25 percent on your heating costs. That depends on the type of home, heating behavior and the amount of insulation material. Cavity wall insulation is the most commonly used, because it is an easy job and the most financially viable. Inner and outer wall insulation are more drastic measures, but they also save more because more insulation material can be applied. These two options are the only options if your home does not have a cavity wall.

Cavity Wall Insulation

Cavity wall insulation

Cavity wall insulation is an easy and cost-effective way of insulating your wall. The energy gain you can achieve is determined by the depth of the cavity and the type of material. The cavity wall is filled by an insulation specialist. By drilling holes in the joints of the exterior wall, insulation material can be injected into the cavity wall. This can be done with different types of insulation material, such as EPS pearls or mineral wool. Cavity wall insulation is usually applied in a day and you will not have any nuisance in the house.

If you do not have a cavity wall or if the bricks of your exterior wall are painted or glazed, you cannot have cavity wall insulation applied. This is because with painted or glazed bricks, moisture can be trapped in the bricks. When it freezes, it expands and the stones crack. Alternatives to cavity wall insulation are internal wall insulation or external wall insulation.

Inner Wall Insulation

Inner wall insulation

Depending on the amount and type of insulation material, inner wall insulation has a better insulating effect than cavity wall insulation. With interior wall insulation, a front wall is placed on the walls adjacent to the outside air, with insulation material in between. These can be different types of material, such as EPS plates or mineral wool.


By installing interior wall insulation you sacrifice living space, because the walls come in a bit. It is smart to choose insulation material with a high insulation value (Rd value) to limit the loss of space. Because the walls come in a bit, this can also affect window sills, sockets and radiators.

exterior wall insulation

Exterior wall insulation

Exterior wall insulation is the best way to insulate your walls, but also the most expensive. With exterior wall insulation, a good insulation layer is applied to the exterior walls. The insulation material is newly finished with, for example, stone strips, plaster or wood. This ensures an evenly applied layer of insulation material without thermal bridges and a new appearance of the house.

With exterior wall insulation, the exterior wall comes forward a bit. This can affect window sills, roof overhangs and the incidence of light in the home. External wall insulation does not cause nuisance in the house. In most cases, a permit is required for this. You can check this at the environmental counter of your municipality.

Benefits and Disadvantages

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