8
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.
Figure 7
(6)
(4)
GASKET
