The solid brick, a small rectangular parallelepiped with flat faces, is intended for the current masonry and the facings (interior or exterior). It also exists in perforated, lighter version.
Hollow brick with horizontal or vertical cavities is a structural brick of larger size. Lighter, it saves a lot of time during installation and displays better thermal insulation. It usually requires a coating.
The monomur brick, also hollow and with vertical cells, is thicker than the previous one. Its superior thermal characteristics dispense with insulating in addition