Natural waterproof stone

 Slate is a member of the family of rocks called shales. Always used in slate roofing for houses and buildings. As a protective facing, slate has since been exported to our gardens.

The roofs of Lauze

This natural stone has iridescent reflections. We speak of shades ranging from “blue-green or even golden brown and violet in South America”. We also speak of slate gray or slate blue.

Old slate roof detail rural-irregular slabs manufactured hand.

This natural stone that is slate is waterproof. With these Breton times, this is very good news!

Slate is tough: its lifespan ranges from 70 to 300 years!

Slate is non-freezing: it will not split or disintegrate when frozen.

The grain of the slate is fine and even.

What are the differences with shale?

There is a fine line between slate and shale.

The shale has a layered appearance, demonstrating its sedimentary layers. We speak of fissility to understand these strata. Crumbly, we will observe less resistance of shale unlike slate which will need more force to break. Slate is more pressurized than shale.

The difference between slate and shale can be seen especially as soon as the sun appears, the shale will tend to be less brilliant than the slate which will be a reflector of light. We will also see ferrite in the shale which will rust with the seasons.

And in case of rain, on the contrary, it is no longer visually that we make the difference but in terms of the smell. Indeed, the shale by its composition will bring out the scent of clay. Slate, on the other hand, will not give off a specific smell.

Natural slates 8 to 10 mm thick.

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