Sequoia Aircraft Corporation F.8L Falco, Construction Manual

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F.8L Falco Construction Manual D–10 Revision 4, March 1, 2002
The following information is a reprint of Weldwood Product Date Sheet WC-1680-677
Product Data
Weldwood Waterproof Resorcinol Glue
Weldwood Waterproof Resorcinol Glue is a high performance, chemically curing, wood
laminating adhesive. Once fully cured, Resorcinol withstands continuous salt or fresh water
immersion, outdoor exposures, tropical and sub-zero temperatures; is not softened by paint or
lacquer solvents, oils, grease or mild acids or alkalis; is chemically inert and thus highly resistant
to degradation by molds, fungi, bacteria and insects.
Resorcinol Glue is a two-component adhesive (separate catalyst) to provide maximum shelf life
and room and intermediate curing capabilities. When the best techniques (outlined below) are
used in bonding wood Resorcinol Glue provides the strongest, most everything-proof bond of any
of the Weldwood adhesives.
Physical Properties
Base: Resorcinol Resin Flash Point: Resin—100°F
Color: Brown to Dark Purple Weight/gallon: Resin—9.6 lbs.
Solids: Resin—66% Catalyst—3.5 lbs.
Catalyst—100% Shelf Life: One Year (see Notice to Purchaser)
Viscosity: Resin—Thick Liquid Odor: Resin—Denatured Alcohol
Catalyst—Fine Powder Catalyst—Paraformaldehyde
Carrier: Resin—Ethanol pH: 3.5 (Mixed)
Uses
General. Weldwood Waterproof Resorcinol Glue is especially recommended for exterior
structural application where maximum durability is required under severe service conditions,
temperature extreme, cyclic or constant salt or fresh water immersion, tropical exposures of high
temperature and humidities, arctic exposures of low temperatures and humidities, and exposure to
biological attack. (In such severe exposures the wood requires protection, use Weldwood water
repellents and/or preservatives.)
Resorcinol may also be used as an interior adhesive for severe or normal exposures of conditions or
stress. Here it also supplies superior durability and bond strength.
Materials. Resorcinol Glue is designed specifically for the lamination of structural wood beams
for severe exposure. It also will provide extremely durable and resistant bonds on a variety of
other porous and semi-porous materials such as wood, particle boards, flake boards, fiber boards,
leather, cork, phenolic plastics (sanded), concrete (thoroughly cured), unglazed crockery and to
the sanded side of high pressure decorative plastic laminates.
Resorcinol is a brown to purple adhesive with characteristic staining properties which may show
at the glue line, through a surface or bleed through some materials such as wood and similar,
marble, unglazed crockery and some plastics. It should not be used where any such stain might be
undesirable.