Page 420 - Construction Waterproofing Handbook
P. 420
10.22 CHAPTER TEN
FIGURE 10.23 Sealant used for termination detailing in EIFS system. (Courtesy of Bonsal)
With cavity wall construction, water enters through initial weather barriers (e.g., brick
facing) and is redirected to the exterior. Water entering in such conditions reacts with alka-
lines in masonry, causing a highly alkaline solution that deteriorates all types of sealant.
This causes sealants to reemulsify and leads to adhesion failure.
Therefore, weeps in masonry walls and at sealant joints must be kept clear and work-
ing effectively, to prevent damage to sealant materials. This is accomplished by installing
a plastic weep tube at the bottom of each sealant joint.
Reglets
Reglets are also used to provide for transitions or terminations in materials or systems of
building envelopes. Reglets are small grooves or blockouts in substrates. Materials are
turned into these reglets to be terminated or to allow transitions between two different
materials. Reglet uses within building envelopes include:
