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.
Rock the roof meaning.
A rooftop is the outside part of the roof of a building.
Go through the roof definition.
It probably is related to a literal roof of a house.
To rise to a very high level.
Origin of through the roof this expression originated in the first half of the 1900s.
To reach extreme heights.
Meaning pronunciation translations and examples.
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.
The presence of roof pendants indicates that the igneous body is being observed near its upper surface.
They are exposed by erosion of the overlying rock.
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.