What angle is recommended for drill holes in post-construction treatment to reduce damage?

The recommended angle for drill holes during post-construction treatment to reduce damage is 45 degrees. This angle is optimal because it allows for effective penetration into the wood or structure while minimizing the risk of fracturing or damaging the material being treated. Drilling at 45 degrees enhances the distribution of the treatment solution within the wood and ensures that the insecticides or preservatives are effectively absorbed by the material, leading to better pest control outcomes.

In addition to promoting effective treatment, drilling at this angle helps maintain the structural integrity of the wood. A steeper angle, such as 90 degrees, may increase the likelihood of splitting the wood as the drill enters, while a shallower angle may not provide sufficient depth for adequate absorption of the treatment. Thus, the choice of a 45-degree angle combines efficacy and safety, making it the preferred practice in the industry.