Correlation of adhesive strength with service life of paint applied to weathered wood
Smooth-planed western redcedar bevel siding was exposed outdoors (preweathered) for 1, 2, 4, 8, and 16 weeks. The weathered boards were separated into two end-matched groups. One group was painted with only primer paint and tested for paint adhesion following preweathering. The second group was painted with a primer and topcoat, exposed outdoors for an additional 17 years, and evaluated during this period for paint cracking and flaking. There was a direct correlation between the amount of time the siding was preweathered and the long-term paint performance. Those boards preweathered for 16 weeks began to show cracking after about 3 years, whereas those boards that were not preweathered were in almost perfect condition after 17 years. Paint adhesion tests done on end-matched boards that were preweathered at the same time and then painted showed good correlation between the paint bond strength and outdoor paint performance for the preweathered boards. 2002
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Correlation of adhesive strength with service life of paint applied to weathered wood (2002)
Smooth-planed western redcedar bevel siding was exposed outdoors (preweathered) for 1, 2, 4, 8, and 16 weeks. The weathered boards were separated into two end-matched groups. One group was painted with only primer paint and tested for paint adhesion following preweathering. The second group was painted with a primer and topcoat, exposed outdoors for an additional 17 years, and evaluated during this period for paint cracking and flaking. There was a direct correlation between the amount of time the siding was preweathered and the long-term paint performance. Those boards preweathered for 16 weeks began to show cracking after about 3 years, whereas those boards that were not preweathered were in almost perfect condition after 17 years. Paint adhesion tests done on end-matched boards that were preweathered at the same time and then painted showed good correlation between the paint bond strength and outdoor paint performance for the preweathered boards.
Author: Williams, R.S.; Winandy, J.E.; Feist, W.C.
Source: Proceedings of the 9th Durability of Building Materials and Components Conference held 17-20, March 2002, in Brisbane, Australia. S.l. : s.n., 2002: 11 pages
Citation: Williams, R.S.; Winandy, J.E.; Feist, W.C. 2002. Correlation of adhesive strength with service life of paint applied to weathered wood Proceedings of the 9th Durability of Building Materials and Components Conference held 17-20, March 2002, in Brisbane, Australia. S.l. : s.n., 2002: 11 pages.
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