Under what condition should you drill and treat brick or stone veneer?

Drilling and treating brick or stone veneer is particularly necessary when the brick ledge is below grade. This situation poses a higher risk for moisture intrusion and termite access because the foundation or footings of a structure are often below ground level. If the brick ledge is situated below grade, it can create a pathway for termites that may be present in the soil to infiltrate the structure, taking advantage of the direct connection between the soil and the vulnerable porous material of the veneer.

In such conditions, it is essential to drill and treat to ensure that the area is protected from termite activity. Additionally, utilizing a treatment in these situations helps to prevent potential infestations before they occur, ensuring the durability and integrity of the structure. This preventive measure is not as critical in other conditions, such as when the brick ledge is above grade, even with grade, or when cracks are present, although those scenarios may also warrant inspection and possibly other forms of treatment.