DURABLE & WATERPROOF: Crack seal agent is made of durable materials, friendly to the human body and the environment, non-toxic. Water proof glue will not harm humans or surfaces. Efficient leak prevention. This is a revolutionary formula based on water and rubber that can penetrate joints, cracks, and leaks and seal any cracked surfaces. After drying, you can apply any color (paint) over it. TRANSPARENT PROTECTIVE COATING: Crack seal glue forms a waterproof and protective coating over surface area. Waterproof glue has strong adhesion and sealing effect, which is immediate and lasts for many years. This adhesive becomes transparent after use and will not turn yellow over time. Protect surfaces from water and various liquids, ultraviolet (UV) radiation, and other harmful chemicals. Prevent any damage caused by corrosion. HEAT, COLD, CRACK, WEAR RESISTANT: Transparent waterproof glue is resistant to any hot and cold weather conditions. The invisible waterproof glue s layer will not crack and wear. Help save time, money and energy because it can long-term protection after use. EASY TO USE: Waterproofing glue for roof can be directly painted on the wall, ceramic, stone, glass, cement ground, bricks, tile, plastic, metal and wood. Waterproof glue is a flexible, rubberized coating that seals out water, air and moisture to stop and prevent leaks. Waterproof glue for roof leakage HOW TO APPLY: First clean the surface to remove any dust and water. Apply the product directly on the surface. Wait for the product to penetrate into the base course. After a few hours, when there is no liquid on the surface, brush twice or three times to enhance the effect. The waterproof layer can be formed after curing for 24 hours, and the waterproof layer will be stronger with the time delay. Transparent glue waterproofing MULTIPLE USE ON: Roofs, Ceilings, Gutters, Skylights, Bathroom, Flashing, Chimneys, PVC Pipe Joints, Windows, RVs, Flat roofs, metal roofs, sloped roofs, planter boxes, foundations, sheds, basements, DIY Projects and More! Can be used for through cracks, window sills, toilet, wall, external wall. Roof water leakage solution WIDE RANGE OF APPLICATIONS: Can be used for crack seepage, window sill seepage, toilet waterproofing sealant seepage, wall seepage, roof seepage, exterior wall seepage, etc. It is suitable for sealing gaps, seams, and leaks and can be used on all building materials. Weight: 300g*3=900g