Parging

Definition

Parging is the application of Portland cement plaster over masonry surfaces.

Purpose

Parging is used to smooth and finish masonry surfaces, providing a more uniform appearance. It also helps protect the underlying masonry from weathering and environmental damage, enhancing the durability and longevity of the structure.

Examples of Use

• Foundation Walls: Applying parging to exterior foundation walls to protect against moisture infiltration and improve appearance.
• Chimneys: Smoothing the surface of brick chimneys to prevent water penetration and reduce the risk of damage.
• Interior Walls: Using parging on interior masonry walls to create a smooth finish before painting or applying other finishes.

Related Terms

• Stucco: A type of plaster used as an exterior wall covering.
• Render: A plastered surface, often used on exterior walls in place of parging.
• Mortar: A mixture of cement, sand, and water used to bond bricks or stones in masonry.

Notes

• Preparation: The masonry surface must be clean and free of loose material before applying parging.
• Thickness: The thickness of parging can vary, but it is typically applied in layers to achieve the desired finish.