Parging is basically a top-coat of mortar that’s applied over the walls of the foundation to shield it from the elements and provide a more aesthetically pleasing finish.
It is extremely important to use a professional masonry service on parging projects as a poor job can create a moisture trap that will lead to water damage. This can in turn compromise a section of your foundation, making your initial problem pale by comparison.
Stone foundations that are showing their age can be enhanced with a professionally applied coat of parging. It adds to the foundation’s water-resistance and prevents further mortar erosion. Masonry blocks can be unsightly and parging is also used to improve the look of an above-grade foundation. Parging hides a multitude of sins and gives the foundation a uniform and attractive new finish.