What's Included
The stucco repair process for Woodruff Springs homes
Telling a moving crack from a settled one
The International Masonry Institute separates stucco cracks into two groups. A crack that is still moving, which a crack gauge can confirm over time, may suit a flexible sealant, sometimes with sand broadcast into it to match the texture. A crack that has stopped moving is better repaired with a rigid repair mortar.
That distinction decides the repair on your Woodruff Springs chimney. Hard mortar in a live crack tends to crack again beside the patch, and a settled crack treated as live leaves a soft seam in the finish. Where the answer is not clear on the day, our team explains how the crack can be watched before the final repair is chosen.
Preparing brick so new stucco bonds
Stucco applied straight to masonry needs something to grip. Preservation Brief 22 describes raking out brick or stone mortar joints to a depth of about 5/8 inch where needed to ensure a good bond, and it notes that the irregular masonry or a scratched, roughened face provides the key.
On a brick chimney in Woodruff Springs that has lost its stucco in places, our masons clean the exposed brick, rake soft joints where the bond calls for it and check the brick itself before new stucco goes on. Any loose brick found under the stucco is priced as a masonry repair on its own line.
Dampening the surface before patching
Dry masonry pulls water out of fresh stucco too quickly, which weakens the bond. Preservation Brief 22 says wood lath or a masonry substrate, but not metal lath, must be thoroughly wetted before stucco patches are applied, so that it does not draw moisture out of the stucco too fast.
Our crew dampens the prepared masonry on your Woodruff Springs chimney before each coat and watches the surface as the work goes on, because a sunny chimney face can dry out between the first trowel and the last. It is a small step that shows up later as a patch that stays attached.
Coatings that let stucco dry
Sealers and heavy coatings are often sold as protection for stucco. The International Masonry Institute warns that film-forming coatings and water repellents may cut absorption but can also stop the stucco from breathing and drying when moisture does get in, and it calls for adhesion testing and mockups before any coating is applied.
Preservation Brief 22 adds that a water-repellent coating is in most cases not necessary on stucco, since paints and colorwashes serve the same purpose and stucco is itself a protective coating. On your Woodruff Springs chimney we recommend a coating only where it helps and say plainly when it would not.
