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The creation or replacement of a frame is an essential step in the construction or renovation of a house in the French-speaking part of Switzerland. This intervention may also become necessary when the roof structure shows signs of weakness, such as cracks, water infiltration, poor thermal insulation, or sagging of the roof. Before starting the work, it is important to accurately assess the budget required for a frame, as it depends on several technical parameters.
To successfully carry out your project, Avenir Rénovations in the French-speaking part of Switzerland assists you in choosing and implementing your roof structure. Our specialists advise you to select the solution best suited to your home and your budget constraints.
The renovation of a frame for lost attics improves the thermal performance of the home while reinforcing the roof's solidity. This solution is also an effective way to preserve the building's structure without incurring excessive expenses.
The budget mainly depends on the roof area, the type of wood chosen, and the complexity of the work.
In the French-speaking part of Switzerland, the average price of a frame for non-convertible attics generally ranges around 95 CHF per m² excluding installation. The cost of installation is then added based on the accessibility of the site and technical constraints.
Hiring a qualified professional ensures compliance with standards and a durable structure.
The construction of a framework in attics intended to be transformed into living space requires specific expertise. The work must integrate various elements such as technical passages, thermal and acoustic insulation, or even the possible installation of roof windows.
These elements directly influence the final cost of the project.
On average, the installation price of a framework in the Romandy region of Switzerland varies between 76 CHF and 95 CHF per m², depending on the complexity of the site and the necessary adaptations.
The price of materials also depends on the type of structure chosen: wooden truss, traditional framework, or metal structure. This type of project, however, allows for the creation of additional living space and increases the value of the property.
| Types of work | Average price/m² |
| Supply and installation of a truss framework | 95 CHF |
| Installation of a metal framework | 76 CHF |
| Traditional framework material and installation | 190 CHF |
| Installation of a framework for flat roofs | 152 CHF |
| Framework for lost attics including installation | 114 CHF |
Widely used in recent constructions, the prefabricated frame is appreciated for its lightness and quick installation. It also offers a good compromise between strength and cost.
This type of structure is particularly suitable for standard roofs as well as non-convertible attics.
In the French-speaking part of Switzerland, the price of a prefabricated frame generally ranges between 38 CHF and 67 CHF per m² for supply. With installation, the total budget can reach around 124 CHF per m².
A personalized project analysis allows for price adjustments based on the surface area and configuration of the roof.
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The traditional frame is often favored for its aesthetics and robustness. It highlights the roof structure and offers more possibilities for converting attics.
However, its more complex design entails a higher cost than that of a prefabricated frame.
The price of materials can reach around 105 CHF per m². With installation done by a professional, the total budget generally hovers around 200 CHF per m².
This type of frame is particularly suitable for renovation projects of old houses or high-end constructions.
Flat roofs are increasingly used in contemporary architectural projects. They are often chosen for creating a terrace or for extending a dwelling.
The cost mainly depends on the material used and the total area to be covered.
Supplies generally range between 29 CHF and 57 CHF per m². With installation done by a professional, the total budget can reach around 143 CHF per m².
Depending on needs, one can opt for a structure made of wood, concrete, or steel, each material having specific characteristics in terms of strength and insulation.
The metal frame is valued for its high resistance, durability, and quick installation. It adapts particularly well to large spans and modern constructions.
The price depends on the roof configuration, the number of slopes, the planned insulation, and any potential work to remove the old structure.
In the French-speaking part of Switzerland, the purchase cost of a metal frame generally ranges between 71 CHF and 162 CHF per m². Installation costs can add around 95 CHF per m² depending on the complexity of the site.
To obtain an accurate estimate, it is recommended to conduct a technical study directly on site.
