Construction plan of waterproofing leak repairing project

1. When using cement mortar, fine-stone concrete or block as a protective layer, you should wait until the coating film is completely dry and spread the isolation layer before you can pour the fine-stone concrete or cement mortar. Fine stone concrete or mortar should be calendered and divided into grids as required. It is best not to have 6 meters of heavy rain in the vertical and horizontal spacing of the split seams, a seam width of 10mm, and use sealing materials to inlay and fill them tightly.
2. The cement mortar leveling layer must be lined or marked to find the slope according to the design requirements, and the split joint slats must be installed. After the cement mortar is leveled and the water is collected, it should be calendered twice to make the surface smooth and compact, and fully maintained. The corners of the roof should be wiped out with a rounded trowel. The leveling layer within the diameter of 50cm around the water drop should be Wipe into pits.
3. The split seam can be completely broken, or the upper half of the seam can be split, the lower part is not broken, and the sealing material is embedded in the split seam.
4. Before the construction of the waterproof layer, the dust, sand, gravel, debris, oil and mortar bumps on the base must be removed.
5. When there is a high and low span, the construction of the waterproof layer should be based on the principle of first high and then low. In the same span, the principle of first far and near should be followed, starting from the lowest point.
6. The dryness of the base layer must be tested before the coating waterproof layer is constructed. During the test, the lm2 waterproof membrane or plastic film should be laid flat on the leveling layer. After standing for 3-4 hours, open the inspection, and the parts covered by the leveling layer should be checked. The waterproof membrane or plastic film can be applied without watermark.
7. Before the large-area coating film is applied, additional reinforcement treatments should be applied to the water drop, yin and yang corners, gutters, cornices and other parts.
8. The waterproof coating film should be applied in several times. When applying, the paint applied first should be dried and formed into a film before applying the latter paint. The direction of each application is perpendicular to the previous one.
9. When applying waterproof layer on corners and facades, it should be re-coated multiple times, and there should be no flow or accumulation.
10. The inner side of the roof parapet and the pressure top must be waterproofed according to the design and specification requirements.
11. The thickness of the synthetic polymer waterproof coating film should be greater than or equal to 2mm, the modified bitumen waterproof coating film should be greater than or equal to 3mm, and the asphalt-based waterproof coating film should be greater than or equal to 8mm.