Choose Bertolit, the Geneva-based general contractor specializing in thermal insulation.
Thanks to our expertise, we deploy high-performance insulation solutions to minimize the energy impact of your buildings.
Whether you’re a private individual or a public authority, we can help you improve the efficiency of your infrastructure, while complying with Swiss standards.
With Bertolit, you combine professionalism and quality to achieve ideal thermal performance.
Let us help you optimize the thermal performance of your buildings in Geneva.
Our insulation expertise
Our insulation expertise
10-year warranty
On time and on budget
Single point of contact
THERMAL INSULATION OF BUILDINGS
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Reach the IDC target of 450 MJ/m2yr (125 kWh/m2yr) for your buildings with our insulation solutions.
Reach the IDC target of 450 MJ/m2yr (125 kWh/m2yr) for your buildings with our insulation solutions.
YOUR THERMAL INSULATION SPECIALISTS
Bruno MORAIS
Responsable division MISE EN CONFORMITÉ ÉNERGÉTIQUE
Our insulation services in
- Geneva
- Chêne-Bourg
- Cologny
- Plainpalais
- Les Eaux-Vives
- Carouge
- Le Grand-Saconnex
- Lancy
- Onex
- Meyrin
Flat roof insulation
At Bertolit, we are experts in flat roof insulation.
Installing high-quality thermal insulation and ensuring a watertight seal are the cornerstones of our work on your flat roofs.
Our aim is to minimize heat loss, prevent water infiltration and ensure correct installation of vapour barriers.
By combining technique and expertise, we provide insulation solutions tailored to the specific needs of each roof.
With Bertolit, opt for durable, effective thermal insulation for your flat roofs.
Traditional, high-quality all-round insulation
We put our expertise in exterior insulation at your service to improve the energy efficiency of your home or building.
Our perimeter insulation work includes the installation of thermal insulation on exterior walls and facades.
From expanded polystyrene to polyurethane and mineral wool, we offer a range of insulating materials to suit your renovation needs.
Whether for cladding or complete insulation, we guarantee an impeccable, state-of-the-art finish.
With Bertolit, quality is at the heart of every thermal insulation project, for comfortable, eco-responsible buildings.
Aerogel exterior insulating plaster
Aerogel-based insulating plaster offers an innovative solution for the thermal insulation of historic buildings.
We replace old plaster with this revolutionary insulating material on building facades to improve their energy performance.
Made from silica, aerogel is an extremely effective insulation material, ideal for renovating your home.
Presented as a rendering, it adds an aesthetic touch while saving energy thanks to its insulating properties.
With aerogel insulating plaster, Bertolit offers you a modern, high-performance thermal insulation solution for your building.
As a reminder: 2cm of insulating material divides the heat loss of an uninsulated wall by 2. (so the extra 18cm won’t save as much as the first 2).
Insulating renders are one of the best solutions for improving the energy performance of older buildings.
Envelope energy compliance in accordance with CECB+ protocols (Certificat énergétique cantonal des bâtiments)
As a specialist in Geneva, Bertolit can guide you in bringing your buildings up to CEB+ energy standards.
Our thermal renovation experts enhance the energy efficiency of your building envelope by scrupulously following CECB+ protocols.
From the initial audit to heating system optimization, every intervention is designed to minimize heat loss and maximize your home’s performance.
The CECB+ also informs you about the subsidies available to support your project.
By choosing Bertolit, you ensure that your property is in line with the latest Swiss energy standards.
Extremely thin interior insulation
Take advantage of interior insulation solutions offering excellent thermal performance while preserving the space in your home.
Our high-performance insulation panels (U = 0.015 W/mK) are distinguished by their low thickness, enabling them to be installed on your walls without taking up excessive space.
The insulation we use is moisture-resistant and comes with a vapour barrier for maximum protection against heat loss.
When you choose interior insulation, you’re opting for an effective solution that enhances the thermal comfort of your home while respecting the architectural integrity of your walls.
Basement and cellar ceiling insulation
Insulating cellar and basement ceilings with rigid insulating panels is an essential operation for improving the thermal performance of your buildings.
At Bertolit, we’ve mastered the techniques needed to insulate these often neglected and complex spaces, cluttered as they are with constraining technical elements.
Our work guarantees an effective thermal barrier that limits heat loss.
By renovating the insulation of your cellar ceilings and floors, you can optimize the heating of your property and make significant energy savings.
EVERYTHING YOU NEED TO KNOW ABOUT THERMAL INSULATION IN BUILDINGS
WHAT IS THE COST OF HEAT INSULATION IN A BUILDING?
For simple surfaces it's around 300.00/m2. In the case of more ambitious insulation, with replacement of joinery, closing of loggias and other services to complete the thermal insulation, the costs can rise to 2000/m2.
WHAT IS THE BEST EXTERNAL INSULATION?
Polyurethane for modern buildings and aerogel for older buildings. For modern buildings, polyurethane is often recommended as the exterior insulation of choice. On the other hand, for older buildings, aerogel is preferred because of its exceptional insulating properties while preserving the building's historic character.
WHAT SUBSIDIES ARE AVAILABLE FOR THERMAL INSULATION IN GENEVA?
In the canton of Geneva, the CECB subsidy is between €750 and €1,500, and the subsidy for facades and roofs is €70/m2. For walls and floors more than 2 m below ground, the subsidy is 40/m2. For more information, visit www.energie.ch.
WHAT STANDARDS ARE IN FORCE FOR THERMAL INSULATION?
The SIA 381/1 standard The reference standard for thermal insulation is SIA 381/1. It is essential to refer to this standard to ensure that insulation meets current requirements.
HOW LONG DO THERMAL INSULATION WORKS TAKE?
4 months for standard buildings in Geneva (up to 5 storeys) and 6 months for larger buildings. For standard buildings in Geneva (up to 5 storeys), thermal insulation work generally takes 4 months. For larger buildings, it takes around 6 months. However, we recommend that you contact us for a more precise estimate based on your insulation project.
