There are a few things to consider when it comes to engineered wood siding and how much overlap is necessary. The first is the width of the siding panels. Most siding panels are between four and eight inches wide, so you will need to take that into consideration when deciding on the amount of overlap. Generally, you will want to have at least two inches of overlap on each side of the panel in order to ensure a proper fit and seal against weather damage.
Another thing to keep in mind is the type of siding you are using. If you are using a vented type of siding, then you will want to make sure that there is at least an inch of space between each panel in order for air circulation. Non-vented types of engineered wood siding do not require this extra space.
Finally, it is important to check with your local building code requirements before finalizing your installation plans. Some codes may require a certain amount of overlap in order to pass inspection. By following these guidelines, you can be sure that your engineered wood siding installation will be up to code and look great for years to come!