Lock Arm awnings are commonly recognized External Blinds. Introduced in Australia some 40 years back, these were an old concept and are oftentimes referred to as “Storm Blinds”. These awnings are effective as a shield against the unforgiving sun, fending off the harmful ultraviolet rays yet admitting natural light in.
These awnings are made in widths up to 3950mm. They are positioned on the surface of an exterior wall, typically 150mm over each side of a reveal, and anchored firmly to the brick layer or wooden substrate (not to the mortar in between). They can also be installed over openings between columns or posts or under an eave. A protective hood is a standard requirement for these awnings, but unnecessary if the overhang is adequate for this purpose.