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The frame plays an essential role in the stability of a house and in the thermal performance of the roof. Over time, the wood can be weakened by moisture, wood-destroying fungi, mold, or wood-eating insects. Climate variations in the French-speaking part of Switzerland, a lack of ventilation in the attic, or insufficient maintenance can promote the appearance of these degradations.
To preserve the structure of your home, it is advisable to call in a company specialized in roof renovation. A personalized study allows for an accurate assessment of the budget needed to treat a wooden frame in the French-speaking part of Switzerland.
A precise estimate generally requires an on-site inspection. Several elements are taken into account to calculate the cost of the work:
In some cases, additional work may be necessary. For example, it may be useful to reinforce the waterproofing of the roof or to replace certain pieces of wood that are too deteriorated.
If the infestation also affects other wooden elements of the house, a comprehensive treatment may be considered. All these factors directly influence the final budget.
Spraying is a technique often used as part of a preventive treatment. The professional applies a fungicidal and insecticidal product to the visible parts of the framework to protect the wood against biological attacks.
A finish such as a stain or saturator can then be applied to enhance protection and preserve the natural appearance of the wood.
In the Romandy region of Switzerland, the average price of preventive treatment by spraying is around 24 CHF per m².
When the framework is already attacked, a curative treatment by impregnation is generally recommended. This method involves applying the product deeply using a brush or sprayer to penetrate the wood.
Several applications may be necessary to ensure the effectiveness of the treatment. The average price for curative treatment by impregnation in the Romandy region is about 43 CHF per m².
When the infestation is more significant, a more in-depth method may be necessary. Injection treatment involves drilling the beams at regular intervals to introduce a specific product into the heart of the wood.
The product is injected using a suitable device or self-diffusing cartridges that allow for gradual diffusion within the structure.
In the French-speaking part of Switzerland, the average price for timber treatment by injection is generally around 52 CHF per m². This solution is particularly effective when pests have deeply penetrated the wood.
Thermal treatment is an ecological alternative as it limits the use of chemical products. This technique involves heating the air in the attic to about 55 °C, which eliminates insects, larvae, and spores.
Once the procedure is completed, the air is filtered to reduce the risk of pest reappearance.
In the French-speaking part of Switzerland, the average cost of thermal treatment for timber is around 29 CHF per m².
Some signs should alert you to the condition of your frame. Brittle beams, visible galleries in the wood, signs of moisture, or whitish deposits may indicate the presence of pests or fungi.
A quick intervention often helps avoid heavy repairs.
After your request for an estimate, a project manager organizes a technical visit to analyze the condition of the frame. Following this inspection, a detailed quote will be sent to you promptly.
The teams at Avenir Rénovations have professional equipment to intervene effectively, especially in the context of roof renovation or attic insulation work.
In some cases, financial aid may be granted when the work is part of a comprehensive energy improvement project. This may particularly concern projects combining roof renovation and attic insulation.
Some cantonal subsidies or measures related to the energy transition can help reduce the total cost of the work.
A professional can also assist you with administrative procedures to optimize the financing of your project.
Durably protect the structure of your home
Avenir Rénovations assists you in your timber treatment project in French-speaking Switzerland. Contact our advisors for a free consultation and a personalized estimate of your work.
The amounts indicated below are for informational purposes only. The actual price will depend on the configuration of the building, the condition of the timber, and the extent of the observed damage.
| Work | Average rate in French-speaking Switzerland |
| Complete inspection of the timber | 238 CHF flat rate |
| Curative treatment by impregnation against fungi and insects | 43 CHF / m² |
| Thermal treatment by hot air | 29 CHF / m² |
| Preventive treatment by spraying | 24 CHF / m² |
