Hiring a contractor or professional deck refinisher is the best way to ensure your deck is properly stained. They have the expertise, tools, and supplies to do the job quickly and efficiently. However, staining a deck is a manageable task for most homeowners, and doing the job yourself can save money. Just keep in mind that DIY staining is a long process requiring physical strain, so it may not be the best option for everyone.

Opt for an interior wood stain that is rated for your type of wood. Consider your personal style preferences as well as the overall use of the room when choosing a color. Remember, the color you see at the store may look different on your actual floors once applied. This is why if you have the chance, it’s helpful to test a few options on a scrap piece of wood in the room first. Once you narrow it down, you can test a small patch on an inconspicuous area in the room to see it on the actual floors.

Exterior paints contain more volatile organic compounds, or VOCs, making them dangerous when used indoors. Without the free ventilation of the great outdoors, it can take longer for the fumes to dissipate than interior paint. While you may notice the smell lessening more quickly, you should be wary of paint fumes inside for 48 to 72 hours after it dries.

Whether to brush or roll stain on wood depends on the project and your preference. Brushing is ideal for smaller, intricate areas and offers more control over the application, ensuring thorough coverage and penetration into the wood's grain. 

Conversely, rolling is efficient for more extensive, flat surfaces and can save time. However, it is not always the best fit for textured or uneven wood. Some projects may benefit from combining both methods, using a brush for detail work and a roller for broader areas. Ultimately, the choice between brushing and rolling depends on the specific requirements of your staining project.