Water plays a key role in the rapid weathering of wood exposed outdoors, in the performance of exterior finished wood, and in the decay or rotting of wood. Properly seasoned wood that stays dry is not subject to decay, to premature failure of paints and finishes, or to many of the other serious problems associated with weathering. There are some relatively simple wood treatments that can be used to slow down the pickup of water and help keep wood dry. These treatments are called water repellents (WR). When a preservative is added to a WR, it is called a water-repellent preservative (WRP). The composition of these two treating materials is very similar; both contain a substance that repels water (usually paraffin wax or related material), a resin or drying oil, and a solvent such as turpentine or mineral spirits. Addition of a preservative such as pentachlorophenol or copper naphthenate to a water repellent helps to protect wood surfaces against decay and mildew organisms.

  • Supplemental Notes:
    • Prepared in cooperation with Wisconsin Univ., Madison. Revision of report dated Aug 68, AD-674 403.
  • Corporate Authors:

    Forest Products Laboratory

    P.O. Box 5130, North Walnut Street
    Madison, WI  United States  53705
  • Authors:
    • Feist, W C
    • Mraz, E A
  • Publication Date: 1978

Media Info

  • Pagination: 8 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00190664
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FSRN-FPL-0124-REV
  • Files: TRIS
  • Created Date: Mar 28 1979 12:00AM