The application discloses the kitchen and bathroom waterproof technology field, concretely is a kind of seamless waterproof construction method based on
coating and material combination between kitchen and bathroom, including specific steps as follows: when carrying out floor waterproof construction, floor must be pitched to the direction of floor drain and must be pitched before brushing waterproof
coating, also guarantee that the elevation of its floor is 2cm-3cm lower than the elevation of adjacent indoor floor, to prevent water
backflow to the outside of kitchen and bathroom, the drainage slope of its floor drain edge outward 5cm should be 3%-4%, when construction, floor drain is center to
radiation in all directions, find slope, scrape with scraping ruler, and surface is required to be smooth, no depression, to not accumulate water, and position is far from doorway, to ensure that doorway is highest point after pitching, the application carries out waterproof construction on the wall surface and top surface between kitchen and bathroom, then water penetration into wall surface and top surface can be avoided, so that wall surface and top surface can be avoided to be damp,
mildew and other phenomena.