Insulation specialist for
basements and cellars in Geneva

Bertolit, your specialist for thermal insulation in Geneva and the surrounding area, puts its expertise at your service for cellar ceiling insulation.
Ensure constant warmth and reduce your heating costs with our top-quality insulation panels.
Whether you need basement or ceiling insulation, our work guarantees optimum thermal performance.
Discover our insulation solutions and benefit from unrivalled value for money.
Trust Bertolit for impeccable insulation work.

Our aim is to offer you optimum comfort in terms of both temperature and noise, whether for your home or your building. We guarantee competitive prices and short lead times.
Contact us today to find out more about our services!

10-year warranty
On time and on budget
Single point of contact

Why insulate the cellar ceiling?

Insulating your cellar ceiling offers a multitude of benefits, both in terms of thermal insulation and the protection and enhancement of your property.

One of the first notable benefits is the savings you’ll make on your heating bills.
A poorly insulated cellar can be a major source of heat loss, driving up your energy costs.
By opting for proper insulation, you can guarantee greater thermal comfort throughout your home, avoiding undesirable temperature variations.

The cellar is often the area most exposed to damp in a house.
Good ceiling insulation effectively prevents the appearance of mold and condensation, guaranteeing a healthy environment free from the unpleasant effects of damp.

Insulating your cellar ceiling is a wise investment for the future. In fact, a house with high-performance insulation increases its market value.
Future buyers are paying increasing attention to the energy performance of their properties, making insulation a real asset when it comes to resale.

Different types of insulation for basements

The choice of insulation for a basement is essential to guarantee optimum thermal efficiency. In Geneva and Switzerland, three insulation materials stand out for their performance: rockwool, expanded polystyrene (EPS) and extruded polystyrene (XPS). Rockwool is naturally fire-resistant, reducing heat loss by up to 25%.
EPS, which is lightweight and easy to install, delivers energy savings of around 20%. As for XPS, its durability and ability to resist moisture make it a preferred choice, with energy gains of up to 30% in Swiss conditions. These insulations, adapted to the region’s specific climatic conditions, are profitable investments for any homeowner concerned with energy efficiency.

Rock wool

Rockwool, also known as stone wool in Switzerland, is the insulator of choice for basements. Derived mainly from basalt, a volcanic rock, it is industrially processed to provide excellent thermal and sound insulation properties. To install this insulation, first prepare the basement surface, making sure it’s clean and dry.
Rockwool panels or rolls are then cut to the desired size. They are then mechanically fastened or glued directly to the walls. Once in place, they provide effective insulation and fire protection.

Glass wool

Glass wool, obtained from fused silica, is an insulation material prized for its thermal and acoustic qualities. When it comes to insulating a basement, work begins with preparation of the area: cleaning and drying of surfaces. Glass wool, available in panels or rolls, is then cut according to the specific needs of the space to be insulated.
Thanks to this method, the basement benefits from an effective barrier against flames, reinforcing the safety of the building.

Expanded polystyrene

Expanded polystyrene, commonly known as EPS, is a honeycomb thermoplastic distinguished by its lightness and insulating properties. With a composition of 98% air and only 2% matter, EPS is environmentally friendly, requiring few natural resources and little energy to manufacture. Its chemically inert nature and durability make it an ideal choice for insulating basements and cellar ceilings. Once installed, EPS provides an effective thermal barrier, while being easy to handle and risk-free for the installer.

Extruded polystyrene

Extruded polystyrene, often referred to by its acronym XPS, is a synthetic insulation recognized for its robustness and efficiency, even in confined spaces. Its ability to deliver quality insulation at a lower thickness than conventional insulation makes it particularly suitable for basements and cellar ceilings. Its superior compressive strength and tolerance to damp environments distinguish it from expanded polystyrene. XPS guarantees long-lasting, high-performance insulation, while optimizing available space.

Our cellar ceiling insulation solutions

In the heart of Geneva, Bertolit stands out for its innovative approach to cellar insulation. Every underground space holds unique potential, and our mission is to transform it into a haven of thermal comfort. With a range of tailor-made solutions, our approaches meet the most stringent requirements for thermal comfort and sustainability.

Insulating panels

Our insulating panels are designed to offer superior thermal resistance. Manufactured from high-quality materials, they provide continuous insulation, limiting thermal bridges. Their light weight makes them easy to handle, while their sturdiness guarantees exceptional longevity.
These panels are also moisture-resistant, avoiding the condensation problems often encountered in cellars.

Insulation techniques

Insulation is only as good as its installation. Our teams are trained in the best application techniques to guarantee flawless insulation. Whether by gluing, screwing or mechanical fastening, we adopt the method best suited to the nature of the substrate and the constraints of the worksite. Every stage is carried out with precision, from substrate preparation to finishing, to ensure long-lasting performance.

Cellar floor insulation

The cellar floor is a major source of heat loss. To guarantee complete insulation, it’s essential not to neglect this area. Our floor solutions combine quality insulating materials with proven installation techniques. So, in addition to an insulated floor, you benefit from a stable surface that’s pleasant to the touch, helping to make your cellar more functional and comfortable.

Ecological and sustainable insulation

With growing environmental awareness, Bertolit is committed to an environmentally friendly approach. We offer eco-responsible insulation made from renewable or recycled resources, guaranteeing not only optimum thermal performance, but also a reduced impact on our planet. By choosing Bertolit, you’re opting for insulation that combines efficiency and respect for the environment.

EVERYTHING YOU NEED TO KNOW ABOUT CELLAR CEILING INSULATION

WHAT ARE THE ADVANTAGES OF INSULATING A BASEMENT?

  • Optimise thermal conservation in winter
  • Minimise summer heat gain
  • Enhance indoor well-being
  • Reduce energy costs
  • Maximise the building's energy performance
  • Optimum protection against the elements
  • Reduce noise pollution
  • Enhance property value

HOW MUCH DOES IT COST TO INSULATE A CELLAR CEILING OR A CAR PARK CEILING?

The cost of insulating a cellar or car park ceiling generally varies between CHF 100 and 200 per square metre. This price may vary depending on the materials used and the complexity of the work.

WHAT SUBSIDIES ARE AVAILABLE IN GENEVA FOR BASEMENT INSULATION?

In Geneva, subsidies for basement insulation depend on the CECB+. It is essential to consult the relevant authorities for a case-by-case study to determine the subsidies available for your project.

Our insulation expertise

CECB+ energy compliance
Traditional, high-quality all-round insulation
Aerogel exterior insulating plaster
Flat roof insulation
Extremely thin interior insulation

Our insulation expertise

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

Write to us

    Call me back