What is the fine-grained topic of the following text: Instead of applying the structural joint, curing, then applying the weather sealant and curing again, Sika suggested a customized application process which comprises applying the structural joint and weather sealant in one step using Sikasil®-SG 500. Only return the topic.
Customized application process of Sikasil®-SG 500 for structural joint and weather sealant