Page 216 - Construction Waterproofing Handbook

ABOVE-GRADE WATERPROOFING 3.103

FIGURE 3.100 Insulation used for draining EIFS divertor systems. (Courtesy of
Bonsal)

Figure 3.108 provides a common EIFS-to-window head transition detail. Note that the
manufacturer is showing that the transitions systems (flashing and sealants) are to be pro-
vided by others. This could present problems in the field if the general contractor has not
properly assigned this work to subcontractors that recognize the importance of the detail-
ing to ensure a watertight application. Should the contractor assign the responsibility of the
flashing to a sheet metal contractor, the sealant to the waterproofer, and leakage occurs at
this window, four different subcontractors could be involved in this simple transition
detail. This invariably leads to “finger-pointing” or passing the blame, while the building
owner continues to suffer leaks and damage to the envelope. Again, refer to Chap. 10 for
a review of methods including “following the barrier” to prevent such situations.