to seep into the grain and work its damaging magic. So, patch these areas with a putty knife and non-shrinking exterior wood filler for a flush board surface with better drainage. Most home centers will have tinted wood filler to closely match your wood stain of choice.
WEATHERED WOOD When wood is exposed to the sunlight, the ultra- violet rays can damage the wood fibers over time, causing the surface to turn gray, and this holds true for any wood species. The most direct way to renew the appearance is to sand or pressure-wash the surface. However, sanding can be very difficult and time-consuming, and pressure-washing can remove the gray but cause the surface to fuzz or splinter, posing a “touch” hazard for areas such as deck surfaces where people may walk barefoot. When using a power-washer, limit your pressure to no more than 1,000 or 1,200 PSI. Some individual boards may be heavily weath- ered. Replace them completely, clean the existing boards, then stain them all to match.