They are exposed by erosion of the overlying rock.
Rock the roof meaning.
Even though the asphalt waterproofs the roof highly important for flat roofs the gravel provides an important life extending extra layer.
To get very angry.
Origin of through the roof this expression originated in the first half of the 1900s.
Go through the roof definition.
The weatherproofing layer of gravel gives the roof s surface a longer life and helps prevent cracking blistering and degradation which could lead to leaks or other material failures over time.
A rooftop is the outside part of the roof of a building.
To rise to a very high level.
Ideally the stones are river gravel which has smooth edges and won t cut into the roof when somebody walks around on it.
To rise to a very high level.
I assume you re not talking about rocks meaning boulders but rather the layer of small stones you see not just on gas stations but on many flat roofs.
The presence of roof pendants indicates that the igneous body is being observed near its upper surface.
Meaning pronunciation translations and examples.