Roofs / Natural slate
Depth and texture you cannot imitate. Natural character, long service life, weather resistance and minimal maintenance — on pitched roofs and modern façades alike.
Slates need little maintenance, are extremely durable and ideal for new builds and renovation alike. They offer excellent protection against wind and rain.
With hundreds of square metres of slate roofs and façades completed, Grava Group is a reliable partner for renovations with character.
Natural character, long service life, weather resistance and minimal maintenance — for projects where origin, texture and a timeless look matter. On pitched roofs and modern façades alike.
Dark grey nuances, natural structure — for modern architecture and renovation.
Natural slate varies by quarry and by delivery; you choose the final shade on a real sample.
Dark surfaces emphasise geometry and connection details.
In Andenne: 230 m² of natural slate on 12 cm of PIR insulation, with new VELUX roof windows.
Roof tiles or slates
Water and wind barrier, vapour-open — with counter battens and tile battens
PIR, glass wool or stone wool — according to height and substrate
On the inside, limits moisture penetration from inside
Natural slate varies by quarry and by delivery.
You choose the final shade on a real sample: dark grey, blue-grey, slate grey or anthracite.
Dark surfaces emphasise the geometry and connection details of the home.
Doing both roof and façade in slate gives one continuous architectural skin.
From 230 m² in Andenne to a full renovation with 200 m² of natural slate in Namur.
26cities in 6 provinces
from Bruges to Namur
Slates connect the lines of roof and façade in a striking way — in modern architecture and on pitched roofs.
Since 2026, roof insulation in Flanders only qualifies for Mijn VerbouwPremie in income categories 3 and 4. We check your situation, help with the application and, if you wish, arrange a renovation loan through KBC.
That depends on the surface area and the build-up. In Andenne we renewed a 230 m² natural slate roof with 12 cm of PIR insulation and new VELUX roof windows in two weeks.
Natural slate varies by quarry and by delivery. That is why you choose the final shade on a real sample.
Yes. Slates on the façade give an elegant look and protect against wind and rain; combined with external insulation they also improve energy performance.
In Flanders, since 2026 roof insulation only qualifies for the Mijn VerbouwPremie grant in income categories 3 and 4. We review your situation and help with the application.
Our specialist inspects your roof and sends you a tailored, no-obligation quote within 48 hours.
Free 3D visualisation with your quote
