Which treatment method should be avoided for brick or stone veneer if the brick ledge is accessible?

The selection of sealing as the treatment method to be avoided for brick or stone veneer when the brick ledge is accessible is based on the nature of the materials and the treatment's effectiveness. Sealing typically involves applying a barrier on the surface to prevent moisture or pests from entering. However, porous materials like brick and stone can absorb moisture, making it more challenging to attain a reliable seal that effectively prevents wood-destroying pests from infiltrating or damaging the structure underneath.

In situations where the brick ledge is accessible, methods like drilling or injecting allow for direct treatment of cavities or areas where pests may reside, ensuring that the insecticide reaches the necessary locations within the structure. Rodding may also be an effective method for accessing and treating the infested areas.

Sealing does not provide a direct method to eliminate existing pest populations or to prevent infiltration where vulnerabilities exist. Thus, while sealing has its place in maintenance and prevention, it is not the best option when effective pest treatment is necessary for brick or stone veneer structures.