Many homeowners upgrade their outside panel siding to James Hardie's HardiPlank brand. This siding choice is made of fiber cement which is extremely durable and long lasting to weather the cold and hot seasons. However, some homeowners would also like to attach a mailbox to the HardiPlank surface. Specific tools and preparation will help make a mailbox mounting project look professional, as well as retaining the HardiPlank's structural integrity.