All pressure treated wood will weather and show signs of checking with time. This natural aging process will not affect the woods’ useful life or affect its’ warranty. However, customers should be advised that an application of a quality brand (Wolman, Cabot, Flood, Sikkens, Super Deck, etc.) Clear, Semi-Transparent or Solid Color Stain should be applied to the pool when the pool is initially installed (or prior to installation ) then every 2-3 years, depending on brand and if you choose Clear, Semi-Transparent or Solid Color Stain. These products will reduce the number of check and cracks, as well as retard the weathering process. We recommend Oil Based products.