Why choose Avenir Renovations?
Why renovate a slate roof?
1. Extend the lifespan of your covering
Although natural slate can last up to 100 years, many factors accelerate its aging: pollution, weather, poor ventilation, or defective installation. A renovation allows you to restore the roof without waiting for serious issues to arise.
2. Correct waterproofing issues
Over time, slates can crack, slip, or break, leading to:
- Infiltrations in the attic
- Degradation of the insulation
- Appearance of mold
- Deterioration of the structure
Regular inspections followed by targeted renovations help to preserve the overall waterproofing of the covering.
3. Preserve the style and value of your property
Slate gives a building character and a highly sought-after heritage appearance. Renovating a slate roof also means enhancing your real estate value while respecting the constraints of protected areas or local urban planning regulations.
Steps of a slate roof renovation
The renovation of a slate roof takes place in 4 steps: free diagnosis, removal, roof covering repair, then finishing and zinc work.
The different types of slates for roofing
The choice of slate has a direct influence on the durability, aesthetics, weight and cost of your roofing. Here are the main types of slates we encounter and renovate in Belgium:
| Type of slate | Characteristics |
| Natural slate | Exceptional longevity, noble aesthetics, breathable material |
| Artificial slate | Homogeneous appearance, reduced cost, fiber-cement manufacturing |
| Local / recycled slate | Local specificity, requires precise restoration work |
Natural slate is quarried, then cut into slabs according to precise dimensions. It is renowned for its exceptional longevity (up to 100 years) and its noble and timeless aesthetics.
Advantages:
- High resistance to frost and weather
- 100% natural and recyclable material
- High heritage value
- Rustic or elegant appearance depending on installation
Disadvantages:
- Higher purchase price
- Heavier weight (roof structure needs to be checked)
- Must be installed by an experienced professional
It is widely used in traditional regions or in character homes, as main roofing or vertical cladding.
Made of fibers and cement, artificial slate visually mimics natural slate while offering a more accessible cost. It is lighter, more uniform in appearance, and easier to install.
Advantages :
- Competitive price
- Lightweight (less demanding on the framework)
- Available in various colors and formats
- Quick installation due to the uniformity of the panels
Disadvantages :
- Shorter lifespan (30 to 40 years)
- Less breathable than natural slate
- Less authentic appearance
It is particularly suitable for recent buildings or extensions, or when the budget is limited.
These are old natural slates, preserved and reused during a renovation. These slates often have an irregular shape and a unique patinated appearance, typical of old or listed houses.
Advantages :
- Heritage and authentic appearance
- Perfect for projects in protected or listed areas
- Material already stabilized over time
Disadvantages :
- Sorting and cleaning required
- Longer installation (irregular slates)
- Stock sometimes insufficient or incomplete for large areas
We can reuse your old slates, or offer you a reclaimed lot for a project with a traditional aesthetic.
Price for the renovation of a slate roof in Belgium
The price depends on the type of slate, the complexity of the roof, the elements to be addressed (insulation, zinc work), the surface area, and the accessibility of the site. Here are the factors to consider and the indicative rates.
Factors influencing the price
- Surface area of the roof to be renovated
- Type of slate: natural or artificial
- Condition of the framework and battens
- Presence or absence of an under-roof screen
- Recovery or not of the old slates
- Complexity of the covering: dormers, valleys, slopes, cuts
- Zinc work, insulation, or ventilation to be integrated
Average observed price (VAT included, supply and installation included)
| Service | Average price per m² |
| Partial renovation (natural slates) | €90 to €130 / m² |
| Complete refurbishment with new slates | €130 to €180 / m² |
| Renovation with artificial slates | €100 to €140 / m² |
| External insulation (optional) | +€40 to €80 / m² |
| Roofing (gutters, ridges, edges...) | €30 to €70 / linear meter |
| Personalized detailed quote | Free after technical visit |
Signs that a renovation is necessary
- Slates delaminated, cracked or missing
- Visible leaks in the attic
- Rusty or broken fixing hooks
- Dented or sagging roof
- Significant amounts of moss or lichen
- Absence or deterioration of the under-roof screen
Types of slates we renovate
We work on both traditional roofs and complex coverings, whether for conservation or total replacement as needed.
Guttering and ventilation: essential elements
A well-thought-out ventilation and quality guttering are essential for the longevity of the slate. We systematically check:
- The ventilated ridge under the ridge tile
- The ventilation tiles or slates
- The zinc/slate connections
- The rainwater drainage
Why choose Avenir Rénovations Belgium?
- Slate roofing specialists, trained in traditional techniques
- Intervention compliant with ventilation, fixing and waterproofing standards
- Respect for local architectural and urban planning regulations
- Warranty on installed slates, hooks and waterproofing
- Complete service including guttering, insulation and finishing
Request your free quote to renovate a slate roof
Do you want to preserve the elegance of your slate roof while ensuring its waterproofing and resistance to the elements? Contact Avenir Rénovations Belgium for a custom, durable and meticulous renovation.
Contact us today for a free technical study at home and receive a detailed quote with no obligation.
