How much does a roof renovation cost?


The roof is the part of the house that undergoes the most weathering and wear over time. The lifespan of a roof largely depends on the roofing material and the climate of your region. After enduring periods of frost, cold, heatwaves, rain, etc., it becomes necessary to renovate the roof of your home. However, these are major works, and therefore, a relatively costly investment. Before starting your project, it's important to have an approximate idea of the cost of roof renovation.

Types of Roof Renovation

The roof is an essential part of a house or building, protecting the framework, walls, and contributing to their stability. Regularly checking the condition of the roof is crucial to determine if renovation is needed.

Partial Renovation

Partial roof renovation involves minor work on a single part of the roof.

Tile or Slate Replacement

During regular roof inspections, some tiles or slates may no longer be able to protect the building. In such cases, replacement is necessary. It's worth noting that tile repairs are usually covered by the roofer who installed the roof. In fact, it's part of their maintenance duty covered by the ten-year insurance. Therefore, it's rare for this service to be charged. However, if it is, it's essential to hire a professional roofer for tile and slate replacement.

Roof Waterproofing Check

In case of waterproofing issues, partial roof renovation is often required. Whether it's a leak, water infiltration, or stains on the roof, delayed intervention can cause significant damage. Additionally, roof cleaning and waterproofing checks are relatively inexpensive tasks. Prioritizing these operations can help you avoid much more expensive major works.

It's worth noting that only an examination by a professional can determine if simple cleaning is necessary. Otherwise, you may need to consider a complete roof renovation.

Complete Renovation

Generally, the lifespan of a roof of a house or building is between 20 and 25 years. After this period, it must be completely replaced, whether it has been well maintained or not. Therefore, if your place of residence is relatively old, it's advisable to regularly check the condition of the roof. If the elements to be replaced or repaired represent more than one-third of the roof, complete renovation is necessary.

It's important to emphasize that replacing the entire roof can be a complex operation. If you lack the necessary skills, doing it yourself can be dangerous. Therefore, it's highly recommended to hire a professional to carry out these works, even if it involves a higher cost.

Factors Influencing Roof Renovation Costs

When it comes to roof renovation, the materials, size, and overall condition can vary greatly from one roof to another. Therefore, there are no predefined rates. Additionally, you must also consider the condition of the frame, which can have a significant impact on the price.

Roof Surface Area

Estimating the cost of repairing a roof is not straightforward, as many factors come into play. Depending on the roof's characteristics, prices and necessary labor can vary. Generally, the first factor to consider is the roof's surface area. You need to account for the number of square meters it covers.

Roof Condition and Covering Materials

It's important to assess the overall condition of the roof. Tile or slate coverings may be covered in moss, damaged, or broken. For metal sheet roofs, particular attention should be paid to the effects of oxidation. Rust may be found in less accessible areas of the roof. In summary, the materials used for roof covering can impact renovation costs.

Frame and Attic Condition

The frame's condition is the most feared factor in roof renovation. Repairing this part of the house can significantly increase project costs by tens of thousands of euros. Therefore, it's essential to regularly check the overall condition of your attic. Mold, odor, moisture, or small holes in the frame are often signs of a problem.


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Estimating Roof Renovation Costs

Estimating square meter prices for roof or frame renovations can be particularly challenging. Indeed, there are many steps to consider when refurbishing a roof. Each roof is unique. The diversity of its components significantly influences the final renovation price.

However, if you still wish to make an approximate estimate, it's necessary to first evaluate the setup of the site. This operation includes assessing the accessibility of the area to be renovated, equipment needs, scaffolding setup, etc. Then, you'll need to consider removing the old roof. This step is generally calculated in euros per square meter based on the frame, solid square, edges, and ridge.

Following this operation, you'll need to account for treating the frame if it needs renovation. Otherwise, you can proceed to calculate the cost of installing tiles, slates, shingles, metal sheets, zinc, or other types of roof coverings.

After all these steps, you'll need to consider the price of finishes, such as plastering joints, gutter installation, or others. It's important to note that the overall cost of roof refurbishment generally includes all these elements. Thus, by considering all the specifics of your roof, you can establish an approximate price for its renovation.

Average Roof Renovation Costs

The cost of redoing a roof depends on several parameters. Therefore, depending on the changes to be made, the price may vary. However, it's possible to obtain the average price of each material and each step to get an idea of the project's budget.

Roof Refurbishment Only

The price of roof renovation mostly depends on the original covering and the materials that will compose the new roof.

Removal of the Old Roof

In the context of a complete roof renovation, it's first necessary to remove the old one. It's noteworthy that removal should be carried out by a professional roofer or artisan. Moreover, the cost of the operation may vary depending on the stages. You'll need to budget around 25 euros per square meter for removing damaged roofing. For the removal of masonry tiles, whether Provençal or other types, the average cost is 45 euros per square meter. For the removal of edges and ridges, you should allocate a budget of 25 euros per linear meter.

Installation of Canal Tiles

Once the old roof has been removed, the artisan can proceed with installing the tiles according to the chosen material. For canal tile installation, you'll need to budget between 60 to 65 euros per square meter. It's important to note that most roofers no longer use traditional canal tiles. Instead, they use a fixed-heel tile that provides better waterproofing and stability.

Installation of Mechanical Tiles

Made from concrete, composite, or clay, mechanical tiles are among the oldest roof coverings in France. They are still present on many houses. For installing this type of tile, you should budget 45 euros per square meter. This price generally includes the cost of materials and labor.

Installation of Slate Tiles

If you want to install slate tiles for your roof renovation, it's important to note that the project quotation may vary depending on the type. For example, for the installation of natural Spanish slate tiles, the price varies between 100 and 110 euros per square meter. This price already includes VAT and the professional roofer's service. For the installation of natural French slate tiles, you should budget between 120 and 140 euros per square meter. Alternatively, you can also opt for synthetic slate covering, which is cheaper. The cost ranges from 50 to 70 euros per square meter.

Installation of Zinc Roofing

For installing a zinc roof, you should budget 50 euros per square meter. It's noteworthy that this type of covering is particularly resistant. Additionally, zinc oxidation can be easily treated.

Price of Flat Roofing

If you want to install a flat roof instead of your old roof covering, you should note that the price varies depending on the material used. For a wooden flat roof, the cost of the work can vary between 80 and 180 euros per square meter. For the installation of a steel flat roof, the cost ranges from 30 to 100 euros per square meter. For other types of flat roofs, the price varies between 50 and 150 euros per square meter.

Other Roof-Related Elements

For other roof-related elements, you should, for example, budget 90 euros per linear meter for ridge construction and 80 euros per linear meter for a closure strip. Also, for a complete roof renovation, you should budget an average of 200 euros per square meter.

Waterproofing Works

If the roof or attic has waterproofing issues, the work estimate will generally depend on the artisan. For bituminous coatings on joints and cracks, you should budget between 10 and 40 euros per square meter, including labor. For insulation with a water repellent treatment, you should budget between 18 and 40 euros per square meter for the product and labor.

Mathieu Amara

Mathieu Amara

Graduated in political science, I have always been passionate about renovation and construction work.

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