Sunday, 11 September 2016

Restoration of severely weathered wood

Published Date
Volume 72, Issue 902pp 43–51

Technical Articles
DOI: 10.1007/BF02698004

Cite this article as: 
Williams, R.S. & Knaebe, M. Journal of Coatings Technology (2000) 72: 43. doi:10.1007/BF02698004

Abstract
  • R. Sam Williams
  • Mark Knaebe

  • Abstract

    Severely weathered window units were used to test various restoration methods and pretreatments. Sanded and unsanded units were pretreated with a consolidant or water repellent preservative, finished with an oil- or latex-based paint system, and exposed outdoors near Madison, WI, for five years. Pretreatments were applied to both window sashes (stiles and rails) and sills. In most cases, pretreatment with consolidants was detrimental to the finish. These pretreatments generally caused more flaking and cracking of the paint compared with that of untreated controls or penetrating water-repellent preservatives. The best results were obtained by a combination of sanding and pretreatment with a water-repellent preservative containing copper naphthenate or with tung oil.

    References

    1. (1).
      Williams, R.S., Winandy, J.E., and Feist, W.C., “Paint Adhesion to Weathered Wood,”Journal of Coatings Technology,59, No. 749, 43 (1987).
    2. (2).
      Williams, R.S., Plantinga, P.L., and Feist, W.C., “Photodegradation of Wood Affects Paint Adhesion,”Forest Prod. J., 40, No. 1, 45–49 (1990).
    3. (3).
      Arnold, A., Feist, W.C., and Williams, R.S., “Effect of Weathering of New Wood on the Subsequent Performance of Semitransparent Stains,”Forest Prod. J., 42, No. 3, 10–14 (1992).
    4. (4).
      Williams, R.S. and Feist, W.C., “Effect of Preweathering, Surface Roughness, and Wood Species on the Performance of Paint and Stains,”Journal of Coatings Technology, 66, No.828, 109 (1994).
    5. (5).
      Evans, P.D., Thay, P.D., and Schmalzl, K.J., “Degradation of Wood Surfaces During Natural Weathering. Effects on Lignin and Cellulose and on the Adhesion of Acrylic Primers,”Wood Science Technol., 30, No. 6, 411–422 (1996).
    6. (6).
      Underhanug, Å., Lund, T.J., and Kleive, K., “Wood Protection—The Interaction Between Substrate and the Influence on Durability,”J. Oil & Colour Chemists’ Assoc., 66, No. 11, 345 (1983).
    7. (7).
      Miller, E.R., “Chemical Aspects of External Coatings for Softwoods,”Proc. Symposium on Chemical Aspects of Wood Technology, Swedish Forest Products Research Laboratory, Södergam, Stockholm, Sweden (1981).
    8. (8).
      Bravery, A.F. and Miller, E.R., “The Role of Pre-treatments in the Finishing of Exterior Softwood,”Proc. Annual Convention of British Wood Preservative Association, 14–23 (1980).
    9. (9).
      Boxall, J., “Painting Weathered Timber,” Information Sheet 20/77, Building Research Establishment, Princess Risborough Laboratory, Alyesbury, Bucks, England, 1977.
    10. (10).
      Shurr, G.G., “Coating Adhesion to Weathered Wood,”Am. Paint. Contractor, 12, 18 (1969).
    11. (11).
      Desai, R.L., “Coating Adhesion to Weathered Wood,” Eastern Forest Products Laboratory, Ottawa, Canada,Bi-monthly Research Notes, 23, No. 5, 36–37 (1967).
    12. (12).
      Kleive, K., “Weathered Wooden Surfaces—Their Influence on the Durability of Coating Systems,”Journal of Coatings Technology, 58, No. 740, 39 (1986).
    13. (13).
      Williams, R.S. and Sotos, P., “Restoration of Severely Weathered Window Units,”Forest Prod. J., in press.
    14. (14).
      Richter, K., Feist, W.C., and Knaebe, M.T., “The Effect of Surface Roughness on the Performance of Finishes. Part 1. Roughness Characterization and Stain Performance,”Forest Prod. J., 45, No. 7/8, 91–97 (1995).
    15. (15).
      Miniutti, V.P., Mraz, E.A., and Black, J.M., “Measuring the Effectiveness of Water-Repellent Preservatives,”Forest Prod. J., 8, No. 10, 61A-65A (1961).
    16. (16).
      Williams, R.S., Sotos, P., and Feist, W.C., “Evaluation of Several Paint Systems on Severely Weathered Wood,”Journal of Coatings Technology, in press.
    17. (17).
      “Test Method D 662 for Evaluating Degree of Erosion of Exterior Paints,”Annual Book of ASTM Standards, Vol. 06.01, American Society for Testing and Materials, Philadelphia, PA, 1991.
    18. (18).
      “Test Method D 661 for Evaluating Degree of Cracking of Exterior Paints,”Annual Book of ASTM Standards, Vol. 06.01, American Society for Testing and Materials, Philadelphia, PA, 1991.
    19. (19).
      “Test Method D 772 for Evaluating Degree of Flaking (Scaling) of Exterior Paints,”Annual Book of ASTM Standards, Vol. 06.01, American Society for Testing and Materials, Philadelphia, PA, 1991.
    20. (20).
      “Test Method D 3274 for Evaluating Degree of Surface Disfigurement of Paint Films by Microbial (Fungal or Algal) Growth or Soil and Dirt Accumulation,”Annual Book of ASTM Standards, Vol. 06.01, American Society for Testing and Materials, Philadelphia, PA, 1991.

    For further details log on website :
    http://link.springer.com/article/10.1007/BF02698004

    No comments:

    Post a Comment