What Is A Perpend Stone?
What Is A Perpend Stone?
A perpend stone is a type of stone that runs through the entire width of a wall, connecting the outer and inner layers. It is used to secure the two layers of stone together in a wall, which is typically made up of two layers with rubble filling the space in between.
The term perpend can also refer to a joint in brickwork that is called a cross joint or a transverse joint when it goes through the entire wall.
Perpends, which are vertical mortar joints in a wall, are typically filled and sealed with mortar. However, they can also be left open as weep holes or cavity ventilators to allow for moisture drainage and ventilation to prevent mildew, dry rot, and damp.
These openings are often formed by plastic inserts for a more uniform shape. A perpend stone is a long stone that connects the inner and outer layers of a stone wall, and is ‘dressed’ at both ends.
The term ‘perpend’ can also refer to any brick or stone that has its longest dimension perpendicular to the face of the wall.
Advantages Of Perpend Stone
Perpend stone is a type of quartzite that is known for its durability, resistance to scratches and staining, and ability to withstand extreme weather conditions. It comes in a variety of colors, is low maintenance and is versatile in application making it a popular choice for both indoor and outdoor use.
Additionally, it is cost-effective as compared to other types of stone. However, as it is a relatively new type of stone, it may be difficult to find a supplier in your area and it can be more brittle than other types of stone so it may not be the best choice for areas that are likely to experience earthquakes.
Disadvantages Of Perpend Stone
Using perpend stone in construction or repair has several drawbacks. It is heavy, making it challenging to move and place, and can lead to instability in the structure if not properly supported.
It can also be costly as it is not readily available and transportation expenses may be high. Furthermore, it requires significant skill and can be labor-intensive to properly position and secure.
