Our waterproof sealing mastic contains epoxy resin, silica. It can provide a strong adhesive force to effectively repair various surface cracks and damage, and guarantee long-term protection. Its use is very simple: after cleaning, it is necessary to seal the gap, ensure that there is no dust, water, debris and other debris, and then fill the gap with glue to 3-5 cm, and polish the surface smooth with hands or tools. And without the need for professional tools, the repair work can be done easily and is suitable for a variety of scenarios.