In areas where groundwater is present, elevator shafts often face issues with negative moisture.
To address this problem, traditional insulations are commonly used; however, these types of insulations lack resistance to negative moisture from the surface and tend to fail.
If you encounter similar conditions, you should first completely clean all the waterproofing materials applied to the floor and walls of the elevator shaft to prepare for sealing work.
After thorough cleaning, begin by applying cement using N50 adhesive and concrete additive. Once the walls are dry (if there is visible water flow, use MA700 instant setting powder), apply SQ2000 crystalline powder to address negative moisture. Finally, after the surface has dried, execute the final isolation using Z90 waterproofing adhesive and resin.
