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Correct
Incorrect
There are hundreds of sealant details but all of
them should address the same principle:
avoid
three-sided adhesion.
Three-sided adhesion is the cause of the majority
of transition joint failures in rehabilitation
projects.
Joint
Bondbreaker
Joint
No Bondbreaker
MOVEMENT
MOVEMENT
Proper joint treatment
with bondbreaker tape
installed. The fact that the
sealant rides on the top of
the bondbreaker (no three-
sided adhesion) allows the
sealant to work properly
without a cohesive tear.
This is an exaggerated
illustration of the same
joint where the sealant
has been installed over
the masonry without a
bondbreaker. The result
is a cohesive tear when
the joint moves.