what exactly is parging? read to learn more.

​Parging is a term used in the construction industry to describe the process of applying a thin layer of cement-based mortar to the surface of a concrete wall. The purpose of parging is to provide a smooth, even surface that can be painted or finished with a decorative coating.

One of the primary reasons for parging is to protect the concrete from weathering and erosion. Concrete walls that are exposed to the elements can deteriorate over time due to freeze-thaw cycles (which occurs often enough here in Richmond Hill), moisture, and other environmental factors. By applying a layer of parging, the wall is protected from these elements, which can extend the life of the wall.

Parging can also improve the appearance of a concrete wall. Concrete walls are often rough and uneven, with seams and gaps between the blocks. Parging can create a smooth surface that is more visually appealing and easier to work with, as well as cover up imperfections in the concrete, such as cracks or chips.

The process typically involves cleaning the surface of the concrete wall and applying a bonding agent to improve adhesion. A layer of mortar is then applied using a trowel or spray gun. The mortar is smoothed and leveled to create an even surface, and then allowed to dry and cure.


Recent Project

At Masonry Richmond Hill, we recently helped a homeowner whose foundation was starting to show signs of wear due to years of exposure to Ontario’s harsh seasonal cycles. The parging around the base of the home had begun to crack and flake, leaving the foundation vulnerable to water penetration and further damage. Our team carefully removed the failing material and applied a fresh layer of high-quality parging, giving the home not only a stronger protective barrier but also a clean, finished appearance.

This project was particularly important given Richmond Hill’s climate, where the area experiences over 120 days of frost annually and significant rainfall in spring and fall. Much like the durable stonework seen at the David Dunlap Observatory or along the Richmond Green Sports Centre, strong parging helps preserve structural integrity while boosting curb appeal. By restoring this foundation, we not only improved the homeowner’s peace of mind but also helped protect their property investment in one of the fastest-growing municipalities in York Region.


Whether you are a homeowner looking to improve the appearance of your exterior walls, parging can provide a durable and attractive finish that will last for years to come.  Feel free to contact our masonry contractors in Richmond Hill at Richmond Hill Fence to find out more information and schedule a free consultation.

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