Inhibiting Effect of Various Paint Systems on the Moisture Absorption of Wooded Test Panels

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DOIResolve DOI: http://doi.org/10.4224/20331517
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TypeTechnical Report
Series titleTechnical Translation, National Research Council of Canada; Volume 557
ISSN0077-5606
Physical description42 p.
Subjectpaints; water absorption; wood boards; panels (shape); permeability; weatherability; Buildings
AbstractExperiments were carried out with wood panels painted in various ways with oil- or alkyd-based materials, as is customary in Holland. After exposing these test panels to an atmosphere of high constant humidity, the amount of water diffused through the paint film and absorbed by the wood was determined by weighing the samples. The results thus obtained revealed some remarkable facts. For example, it took an unpainted wood panel (15 x 15 x 2 cm.), which had been immersed in water, from five to six weeks to obtain a moisture content of 90 per cent. Although it is reasonable to assume that a close relationship exists between the amount of water absorbed by a panel and the permeability of the protecting paint film, the results show that panels, which had been painted with materials of high quality and which were then exposed to the weather for a long period, show a much greater increase in weight than panels coated with a material of poor quality.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
IdentifierNRC-TT-557
NRC number807
NPARC number20331517
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Record identifierffd0aa01-9d2f-4eba-89f0-090a662dad7c
Record created2012-07-18
Record modified2016-10-03
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