Page 215 - Construction Waterproofing Handbook

3.102 CHAPTER THREE

FIGURE 3.99 Termination to horizontal envelope component. (Courtesy of Bonsal)

to the EFIS system. Note the weep base at the roof side for the EIFS system and the additional
sealant cant transition from the EIFS to the roof flashing.
Figure 3.107 details a vertical transition of EIFS to masonry facade components. Note
that a double seal is used at the expansion joint that becomes the transition detail between
the two cladding systems. The moisture or dampproofing barrier runs continuously behind
both the masonry and EFIS system. Excellent detailing, but it is important to recognize
that there would be an obvious problem with contractural and installation responsibility for
the dampproofing. Would the mason or the EIFS applicator install the dampproofing
shown running continuously? If the mason installs the product and leakage occurs behind
the EIFS system, who would be held responsible, since the mason likely would not have
supplied a warranty for the EIFS system? Such details, while providing excellent water-
proofing protection, are often not completed in the field properly, resulting in leakage that
could easily have been prevented. This topic of responsibility for transition detailing is pre-
sented in Chap. 10 for all envelope components.