10
8.
Before applying the gasket to the top of the ladder, be sure that the joint surfaces of the top runway
and ladder sections are clean and dry. Unroll the gasket material and hold so that length of the gasket
is centered on the center of the ladder joint. With the exposed adhesive side of the gasket facing the
ladder joint surface, apply the gasket starting at the center of the part, working outward to the sides.
Be sure that the bottom edge of the gasket material is held against the shelf on the ladder part during
installation, see reference images below. Do not make too tight of a bend radius with the gasket when
transitioning the gasket up the vertical edges of the joint. The transition radius should be as large as
possible. Making too tight of a bend radius will cause the gasket to kink and possibly leak. The
gasket should be centered on the available space in the vertical area of the joint, see reference
images below. Once the gasket is in place, firmly press down on the gasket in all locations to ensure
that the gasket has completely adhered to the ladder joint surface. Remove the paper backing on the
outward face of the gasket to expose the adhesive. Use caution not to remove the adhesive strip
from the gasket when removing the paper backing.
GASKET
FIGURE F
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