Specialist in exterior
insulation in Geneva

Bertolit is one of the leaders in exterior insulation in Geneva. For the walls of your home or building, we offer tailored thermal insulation solutions, using first-rate insulating materials such as glass wool, expanded polystyrene, polyurethane and wood wool. Whether you’re looking for simple wall insulation or façade renovation with rendering or cladding, our expertise guarantees energy efficiency that meets current requirements. You can also benefit from advantageous subsidies when you choose Bertolit for your insulation work in Geneva and the surrounding area.

Perimeter insulation is a complete approach to enveloping your home, providing a robust barrier against heat loss. Don’t let heat loss affect your comfort and your energy bill. Request a personalized quotation today and see for yourself the excellence of our services. Bertolit, your partner for uncompromising insulation in Geneva.

10-year warranty
On time and on budget
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Why insulate a building from the outside?

Perimeter insulation, also known asIsolation Thermique par l’Extérieur (ITE), is an essential solution for improving your building’s energy efficiency. According to various studies, a poorly insulated house can lose up to 25% of its heat through the walls and 30% through the roof. By opting for ITE, you can significantly reduce these heat losses. The benefits are manifold: increased thermal comfort, substantial savings on your energy bills and enhanced value for your property. What’s more, with a rejuvenated and aesthetically improved facade, your building gains in charm and modernity. Don’t wait any longer, contact Bertolit for a personalized quote and find out how you can transform your home or building while saving energy.

The different types of exterior insulation

At Bertolit, we understand that every building is unique and deserves an exterior insulation solution tailored to its specific needs and energy standards. That’s why we offer a wide range of exterior insulation products to meet every requirement. Discover our leading solutions for high-performance exterior insulation in the French-speaking part of Switzerland.

Wood wool

Wood wool is a popular natural insulator for exterior building applications. Made from compressed wood fibers, it offers excellent thermal performance and natural moisture regulation. For façade installation, the external surface of the building is first prepared. The wood wool panels are then cut to the required dimensions and fastened to the structure using special screws or adhesives. Covered with plaster or cladding, wood wool provides durable, environmentally-friendly insulation.

Polystyrene

Polystyrene, appreciated for its lightness and thermal efficiency, is an ideal material for exterior insulation. After preparing and cleaning the facade, the polystyrene panels are attached to the structure. A reinforcing mesh is then laid on top to reinforce the strength of the whole. The first coating is applied to ensure optimum adhesion. A regulator is then applied to harmonize water absorption. Finally, the finishing coat is applied, giving the facade lasting protection and an attractive appearance.

Fiberglass panels

Fiberglass panels are widely used for exterior insulation thanks to their distinctive properties. They offer excellent thermal resistance, guaranteeing effective insulation against cold and heat. These panels are also lightweight, making them easy to handle and install. Moisture-resistant, they prevent condensation problems and contribute to the longevity of the structure. What’s more, their non-combustible nature makes them ideal for fire prevention.

Stages of perimeter insulation work

Perimeter insulation is a technical operation requiring specific expertise and know-how. At Bertolit, we have refined our process to ensure efficient implementation and lasting results.

Here are the four key steps in our perimeter insulation process:

Initial assessment and diagnosis

Before starting work, our experts carry out a complete assessment of your building.
This diagnosis enables us to understand the current structure, identify areas of heat loss using a thermal camera, and determine specific insulation needs.

Selecting and preparing materials

Based on the diagnosis, we select the insulation materials best suited to your project (wood wool, polystyrene, polyurethane, wooden structures, etc.).
The materials are then prepared and cut to size on site to fit perfectly with the structure of your building or home.

Perimeter insulation installation

This stage involves fixing the insulation panels to the exterior façade.
Our professionals ensure that each panel is installed with precision, guaranteeing continuous insulation with no thermal bridges.
The fasteners are then covered to ensure an aesthetic finish.

Finishing and quality control

Once the insulation is in place, we proceed with the finishing touches, whether plastering, cladding or other coatings.
Finally, rigorous quality control is carried out to ensure that the insulation meets the highest standards and delivers optimum performance.

EVERYTHING YOU NEED TO KNOW ABOUT EXTERIOR INSULATION

WHAT ARE THE ADVANTAGES OF PERIMETER INSULATION?

Perimeter insulation, carried out by experts like Bertolit, offers multiple benefits for building owners.

  • Firstly, it significantly reduces heat loss, optimising energy consumption and cutting associated costs.
  • Secondly, it preserves the interior space of the house, unlike internal insulation.
  • Thirdly, it improves indoor comfort by regulating the temperature, whether in the hot or cold months.
  • Finally, perimeter insulation enhances the aesthetic appeal of the building's façade, while protecting its structure from the weather and thermal variations.

Opting for perimeter insulation means choosing a sustainable, cost-effective and aesthetically pleasing solution.

HOW MUCH DOES EXTERNAL INSULATION COST?

The average cost of external insulation with finish plastering is around 250.00 to 350.00 per m2. This cost varies, of course, depending on the energy performance to be achieved, technical constraints and the degree of complexity of the façade morphology.

ARE THERE ANY GRANTS AVAILABLE FOR PERIMETER INSULATION WORK IN GENEVA?

In Geneva, grants may be available for perimeter insulation work. We recommend that you consult the relevant authorities or the official website of the Republic and Canton of Geneva for up-to-date, detailed information on the financial assistance available for this type of project.

HOW LONG DOES EXTERNAL INSULATION WORK LAST?

The average duration of external insulation work is 3 months. This estimate may vary depending on the size of the project and the specific conditions of each building.

IS IT BETTER TO INSULATE FROM THE OUTSIDE OR THE INSIDE?

External insulation is generally considered to be the best option for eliminating the majority of thermal bridges, particularly those linked to the edges of balcony slabs. In addition, it has the advantage of preserving the interior surfaces of flats and avoiding the need to carry out work inside them, which means less inconvenience for residents.

Our expertise in thermal insulation

CECB+ energy compliance
Aerogel exterior insulating plaster
Flat roof insulation
Basement and cellar ceiling insulation
Extremely thin interior insulation

Our expertise in thermal insulation

Our areas of operation

  • Geneva
  • Chêne-Bourg
  • Cologny
  • Plainpalais
  • Les Eaux-Vives
  • Carouge
  • Le Grand-Saconnex
  • Lancy
  • Onex
  • Meyrin
Special work Interior transformations Depollution Waterproofing Façades Emergencies Surface treatment

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