You can also coat exterior wood with copper naphthenate. Copper is a natural biocide. It helps to ward off wood rot, mildew and algae. The issue is that this liquid produces a greenish cast on the ...

Staining with a highly rated product from a brand like Behr, Olympic, or Valspar can spruce up and protect wood. We spend three years testing each stain we rate. The type of stain you choose (solid, ...