Staining a deck with a rag is typically a better option than using a brush, as it helps the stain penetrate deeper into the wood. However, both brushes and rags are best reserved for detailed work because using these tools on an entire deck can require tediously crawling around on your hands and knees. A pad applicator, sprayer, or roller are preferred alternatives to applying stain over the majority of a deck. Use a rag for railings and other detailed work, and let the wood soak up as much of the stain as possible before wiping away drips or pools.

It's okay to walk on a newly painted deck after about four to six hours as long as the weather has been dry. Be sure to wait at least 24 hours before you place any outdoor furniture or grills on a freshly painted deck, though.

When applying multiple coats, wait four to six hours for each coat to dry. Not waiting long enough can result in streaks, peeling, and uneven color. Plus, it will be more difficult to discern where the second coat has already been applied.

Various kinds of substances and deck preservatives act as protective coatings for wood to prevent rot, which is caused by water getting into the wood and creating cracks and splits. Stains, paints, and sealants are the three best options to protect your wood, but there are also oils, varnishes, and waxes available. You’ll need to reapply sealant at least once per year, and you should inspect your wood deck regularly to look for signs of damage or general wear and tear.