Parging or Tuck-Pointing

Parging or Tuck-Pointing


Preparing for Parging
Preparing for Parging and Custom Basement Door Install
Completed Parging
Completed Parging
Completed Parging with Custom Door Installed
Completed Parging with Door Installed
For more information, visit our Stone Foundation and Structural Repair Page.

Stone foundation, the most common basement built before 1915, is a concern for homeowners of old homes. Homes that are a hundred years or older their foundation have commonly been made from fieldstone and limestone. Basements were made by stacking stones and using mild mortar and gravel to bond the stones together. As the stone foundation age, the mortar deteriorated, the mortar turns to powder, and the wall loses strength.

Old Stone Foundations In many old stone basement foundations, interior drain tile was not installed, which can cause the basement to be wet or damp. Many old stone foundations built before 1915 were without footers; they made them on packed soil. Digging down on the outside of a stone foundation loses the support of dirt that helps hold it up. If you dig down on the outside of the foundation of a stone foundation, it can cause the stones to fall out or even collapse the wall.

Basements appropriately designed with correct footer and foundation walls are often strong enough to hold up against the forces of nature for many years. The combined pressure of gravity, soil swelling with water, freezing, and thawing create hydrostatic pressure. Hydrostatic pressure and tree roots are forces that continue to excerpt pressure and gain entrance into your basement.

A visual inspection will disclose gaps in the joints, crumbly mortar, bulging, bowing shifting, or settlement that may require a home foundation repair.

The Need for Re-Pointing/Parging/Tuck-Pointing Moisture migration will inevitably cause the mortar to deteriorate and expose the stones. When this occurs, re-pointing or parging is needed. If enough of the old mortar falls out between the rocks, they will start shifting around. A home foundation repair would be necessary if the sandy, crumbly mortar falls out, the stones also will likely fall out.

Proper Basement Drainage Maintaining the proper pitch of soil around the foundation is equally essential to correct any negative pitch. Proper basement drainage around the outside of the basement foundation's perimeter is necessary to avoid hydrostatic pressure. When properly grading around the foundation, window wells may need to be added in front of each window to keep the window from being bury and effectively raise the topsoil grade around the home, shedding water away. The ground and decks or concrete patios adjacent to the foundation should have a positive slope away from the house foundation. Roof water should collect in a well-maintained gutter system with downspouts and discharging away from the foundation. Sump pump discharge lines also need to be extended out from the home foundation.

Parging or Tuck-Pointing Before & After

Mouse over any image below to see the before and after transformation. Click image to enlarge.

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