Page 258 - Construction Waterproofing Handbook
P. 258
SEALANTS 5.17
EMSEAL
Precast concrete
Backer rod and sealant
Exterior seal Precast concrete
EMSEAL
FIGURE 5.21 Differences between double sealing and secondary sealing. (Courtesy of
Emseal)
joint as well as being part of a secondary seal at the primary barrier sealant. The secondary
seal systems should be used whenever an unusual condition exists in the envelope design
that requires a belt-and-suspender system for the primary barrier.
Binary Seals
Manufacturers of joint seal products are now combining two (binary) previous stand-
alone products into one system, to act as dual primary barrier systems referred to as
