Wood that sits in the exterior environment must be properly maintained in order to extend the life of the wood. In addition to extending its life, maintaining exterior wood protects your investment and provides beauty that maximizes your enjoyment.
When protecting horizontal wood surfaces, the only option is an oil based semi-transparent penetrating stain.
All too often a deck is painted with the same product as the siding. This is due to a variety of reasons. The facts on paint and solid film forming stains is that there are not effective on horizontal surfaces that get traveled upon. These types of products are effective on wood that is vertical. Painting horizontal surfaces results in peeling within as early as several months. Horizontal wood surfaces that are stained with a coating versus a penetrant will have the same results as a paint product.