Instructions / Assembly
gibraltarbuildingproducts.com
These installation guidelines are for use with typical or standard applications. It is always recommended to
seek advice from a licensed professional, and to check with your local building inspector or building permit
oice for approvals and possible variations that may apply.
BASIC INSTALLATION GUIDELINES
VINYL CORNER BEAD
STAPLE ATTACHMENT
• For regular (not bullnose) archway corner beads, drywall does
not need to be set back
• For doors, windows or special lengths, cut the bead to length
and dry t
a. Prevent overlap of the mud anges by snipping back
b. Dry t the bead
• With 1/2” crown staples staple the solid mud ange every 6-10”
and each ange segment on the notched mud ange.
• No primer is needed. Finish as usual.
• For cold weather winter applications, please refer to the
installation recommendations in the Gypsum Association
GA-220-2020.
• Archway Cornerbead is slotted (kerfed) to t smoothly around a
curved surface.
SPRAY ADHESIVE
• For regular (not bullnose) archway corner beads, drywall does
not need to be set back.
• For doors, windows or special lengths, cut the bead to length
and dry t.
a. Prevent overlap of the mud anges by snipping back.
b. Dry t the bead.
• Put a coat of spray adhesive on the back of the bead and
then on the drywall per [the spray adhesive] manufactures
instructions.
• The rate at which the adhesive dries varies depending on heat
and humidity. Test in your conditions.
• Use handle of your taping knife or installation tool to apply
pressure along both mud anges. Bond strength is greatly
enhanced with this crucial step.
• No primer is needed. Finish as usual.
• For cold weather winter applications, please refer to the
installation recommendations in the Gypsum Association
GA-220-2020.
• “L” Trim is used where drywall abuts suspended ceilings,
beams, plaster, masonry and concrete walls.
• “J” Trim is used to nish rough drywall panel ends at window
and door openings.
“J” - TRIM
“L” - TRIM