Durability of exterior natural wood finishes in Brazil

IRG/WP 3343

D R Macedo

Wood finishes systems were evaluated in natural weathering conditions during 5 (five) years, over "Parana-pine" (Araucaria angustifolia). Test samples results show that: - Semitransparent wood preservative stains, based on polimerized linseed oil, provided very good protection to the wood, compared with the one based on alkyd varnish; - Solid color wood preservative stains provided good durability. However, film degrading process was identical to the one of conventional finishes; - Conventional paint and varnish showed decomposition caused by cracking, checking and flaking (scaling).


Keywords: FINISHES; WEATHERING; ARAUCARIA ANGUSTIFOLIA; WATER REPELLENTS; BRAZIL; PIGMENTS; TBTO; SYNTHETIC ENAMELS; URETHANE; ALKYD VARNISH

Conference: 85-05-12/17 Guaruj√°, Brazil


Download document (1.1 Mb)
free for the members of IRG.

Order document from secretariat