Water. Water is absorbed into the wood and washes out the natural wood resins and color.Freezing/thaw cycles can splinter and crack the wood.Also water promotes algae, mold, and mildew growth and rotting.
Sun light. Ultraviolet (UV) rays bleach (graying) the wood fibers and breaks down the cell structure.
Mold, Mildew, Algae, and Fungus. Wood and moisture are a natural food source for mold, mildew, algae, and fungus.This generally causes a black, green or gray discoloration.
By applying a bio-degradable cleaner followed by a low pressure wash the cleaning restores the natural beauty and color by removing dirt, mold, mildew, algae, fungus to prepare the wood for sealing.The sealer protects the deck against the environments.There are many colors to choose from:semi-transparent, solid colors or clear base.