The best way to install wood siding is to use a rain screen system, allowing air to circulate behind the boards so moisture can dry out from both sides. Use furring strips over a house wrap (weather-resistant barrier) to create the air pocket between the sheathing and the siding.
It is very important to also ensure that the clapboards are sealed on all six sides (back, front, top, bottom, and cut ends) to keep moisture out of the wood. Protect the wood with a high-quality exterior-grade paint, semi-transparent stain, or UV-blocking sealant on all sides if possible before or immediately after installation.
Finally, keep the bottom edge of the wood siding at least 6 to 18 inches above the ground or deck surface to prevent rain splash-back.
