Page 115 - Construction Waterproofing Handbook

3.4 CHAPTER THREE

FIGURE 3.1 All envelope waterproofing applications must act together to prevent water intrusion.

To waterproof adequately with an elastomeric coating, details must be addressed,
including patching cracks or spalls in substrates, allowing for thermal movement, and
installation of flashings where necessary.
Cementitious coatings are available for application to vertical masonry substrates,
which also cover substrates completely. The major limitation of cementitious above-grade
product use is similar to its below-grade limitation. The products do not allow for any
substrate movement or they will crack and allow water infiltration. Therefore, proper
attention to details is imperative when using cementitious materials. Installing sealant
joints for movement and crack preparation must be completed before cementitious coat-
ing application.
With all vertical applications, there are patching materials used to ensure water tight-
ness of the coating applied. These products range from brushable-grade sealants for