The roof is the part of the house that is most exposed to the elements and wear and tear over time. The lifespan of a roof depends largely on the roofing material and the climate in your region. Therefore, after a certain period of time spent enduring frost, cold, heat waves, rain, etc., it becomes necessary to renovate your home’s roof.
However, this is a major undertaking and, consequently, a relatively expensive investment. Before starting your project, it is therefore important to know the approximate cost of a roof renovation .
Types of roof renovation
The roof is an essential part of a house or building. Its role is to protect the frame and walls, and contribute to their stability. Therefore, regularly checking the condition of the roof is essential to determine whether renovation is necessary.
A partial renovation
Partial roof renovation includes minor work on only one part of the roof.
Changing tiles or slates
During regular roof inspections, some tiles or slates may no longer be able to protect the building. In this case, it is important to replace them. It should also be noted that tile repair is generally handled by the roofer who installed the roof.
In fact, it is part of their maintenance obligation, guaranteed by the ten-year insurance. As a result, it is quite rare for the service to be billed. However, if this is the case, it is essential to call a professional roofer to replace your tiles and slates.
Checking the roof’s watertightness
In the event of a waterproofing issue, a partial roof renovation is often necessary. Whether it’s a leak, water infiltration, or roof stains, late intervention can cause significant damage. Furthermore, cleaning and checking the roof’s waterproofing are inexpensive tasks. Prioritizing these operations can therefore prevent you from having to undertake major, much more expensive work.
It should be noted that only a professional inspection can determine whether a simple cleaning is necessary. Otherwise, you may need to consider a complete roof renovation.
A complete renovation
Generally, the roof of a house or building has a lifespan of between 20 and 25 years. After this time, it must be completely replaced, whether it is well maintained or not. Therefore, if your place of residence is relatively old, it is recommended to regularly check the condition of the roof. If the elements to be replaced or repaired represent more than a third of the roof, a complete renovation is necessary.
It’s important to note that replacing your entire roof can be a complicated process. If you don’t have the necessary skills, doing it yourself can be dangerous. It’s therefore strongly recommended to hire a professional to carry out this work, even if it involves a higher cost.
Factors that affect the price of a roof renovation
When it comes to roof renovations, materials, size, and overall condition vary from roof to roof. As a result, there are no set prices. Additionally, you’ll also need to consider the condition of the roof structure, which can have a significant impact on the price.
The roof surface
Estimating the cost of roof repair is not easy, as many factors must be taken into account. Depending on the characteristics of the roof, the prices and labor required can vary. Generally, the first factor to consider is the roof’s surface area. This means taking into account the number of square meters of the roof.
The condition of the roof and the materials used for the roofing
Next, it’s important to assess the overall condition of the roof. Tile or slate roofing may be covered in moss, damaged, or broken. When it comes to metal roofs, it’s important to pay particular attention to the effects of oxidation. Rusty areas may be found in the least accessible areas of the roof. In short, the materials used for roofing can have an impact on the renovation cost.
The condition of the framework and the attic
The condition of the roof structure is the most feared factor when it comes to roof renovations. Repairing this part of the house can increase the cost of the project by tens of thousands of euros.
That’s why it’s important to regularly check the general condition of your attic. The presence of mold, odors, moisture, or small holes in the roof structure is often a sign of a problem.
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Estimating the price of a roof renovation
Estimating the price per square meter for roof or frame renovations is particularly difficult. Indeed, there are many steps to consider when renovating a roof. Each roof is unique. The diversity of its components has a considerable impact on the final renovation price.
However, if you still want to make a rough estimate, it is necessary to first assess the site layout. This operation includes measuring the accessibility of the part to be renovated, the need for materials, the installation of scaffolding, etc. Subsequently, you will have to take into account the removal of the old roof. This step is generally calculated in euros per square meter depending on the frame, the full square, the edges and the ridge .
After this operation, you will need to factor in the treatment of the roof structure if it needs to be renovated. Otherwise, you can move on to calculating the cost of installing tiles, slates, shingles, steel decks, zinc, or other types of roof covering.
After all these steps, you’ll need to factor in the cost of finishing touches, such as plastering, gutter installation, and more. It’s important to note that the overall cost of a roof repair typically includes all of these elements. By taking all of your roof’s specific features into account, you can estimate an approximate cost for the renovation.
The average cost of roof renovation work
The cost of redoing a roof depends on several factors. Therefore, depending on the changes required, the price can vary. However, it is possible to obtain the average price for each material and each step to get an idea of the budget required for the project.
Roof repair only
The price of roof renovation depends mainly on the initial covering and the materials that will make up the new roof.
Removal of the old roof
As part of a complete roof renovation, it is first necessary to remove the old one. It should be noted that removal must be carried out by a roofer or professional craftsman. Furthermore, the cost of the operation can vary depending on the steps. You will need to budget €25 per square meter for the removal of the damaged roof.
For the removal of masonry tiles, whether Provençal or other types, the average cost is €45 per square meter. For the removal of the eaves and ridges, you will need to prepare a budget of €25 per linear meter.
Installation of canal tiles
Once the old roof has been removed, the roofer can proceed with the installation of the tiles, depending on the chosen material. For canal tiles, you should expect to pay between 60 and 65 euros per square meter. It’s worth noting that most roofers no longer use traditional canal tiles. Instead, they use Posifix heel tiles, which provide better waterproofing and stability.
Laying a mechanical tile roof
Made from concrete, composite, or terracotta, mechanical tiles are among the oldest roof coverings in France. They are still found on many homes. Installing this type of tile costs €45 per square meter. This price generally includes the cost of materials and labor.
Installing slate tiles
If you’re considering installing slate tiles for your roof renovation, it’s important to note that the project estimate can vary depending on the type. For example, installing natural slate tiles from Spain costs between €100 and €110 per square meter. This price includes VAT and the professional roofer’s fees. Installing natural slate tiles from France costs between €120 and €140 per square meter. Alternatively, you can opt for a cheaper synthetic slate roof. The cost is between €50 and €70 per square meter.
Installing a zinc roof
For zinc roofing, you’ll need to budget 50 euros per square meter. It’s worth noting that this type of roofing is particularly durable. Furthermore, zinc oxidation can be easily treated.
The price of a flat roof
If you’re looking to install a flat roof in place of your old roof covering, you should note that the price varies depending on the material used. For a wooden flat roof, the cost can range from €80 to €180 per square meter. For a steel flat roof, the cost ranges from €30 to €100 per square meter. For other types of flat roofs, the price ranges from €50 to €150 per square meter.
Other elements relating to the roof
For other roofing-related items, for example, you’ll need to budget €90 per linear meter for the construction of eaves and €80 per linear meter for a flashing. Also, for a complete roof renovation, you’ll need to budget €200 per square meter on average.
Waterproofing work
If the roof or attic has leaks, the cost estimate will generally depend on the contractor. For bitumen coatings on joints and cracks, you’ll need to budget between €10 and €40 per square meter, including labor. For insulation with a water-repellent treatment, you’ll need to budget between €18 and €40 per square meter for the product and labor.
