1、 Working conditions of waterproof bottom layer: 1. The base surface of color steel tile is free of dust and loose. The construction can only be carried out after some looseness treatment 2. There shall be no ponding on the base surface. If it is necessary to reinforce, the waterproof layer can be constructed only after it is qualified 3. When the gap of color steel tile exceeds 03mm, reinforcement treatment shall be carried out, and construction can only be carried out after treatment 4. It is necessary to make additional layers for internal and external corners, pile facade and plane internal corners, internal and external corners of facade 5. In the morning, when there is dew on the surface of colored steel tile, the construction shall be suspended 6. The bottom layer treatment agent shall be applied on the color steel tile for construction in severe winter 2、 Operation technology: 1. Clean the base surface: wipe off the dust on the old color steel tile surface with a supporting cloth. If there is rust, remove the rust to make it flat and clean 2. Make additional layer: additional layer shall be made at the internal and external corners, vents, gutters, etc. the additional layer shall be 15cm-30cm wide and extended along the central axis of the internal and external corners 3. Large area construction: A. snap the datum line first, so the coiled material is neat and beautiful. b. Lay the coiled material flat, align the coiled material with the position to be constructed, and roll up the coiled material from both ends. c. Cut the barrier paper from it, remove the barrier paper and knead the coil as far as possible to make the coil flat 4. Request: when paving the special waterproof coiled material for color steel tile, the construction shall start from the downhill direction. The vertical wall is paved from high to bottom b. Sweep away the air and press the air in the overhead coil with the coil rolling to make the coil firm and bonded c. When the temperature is low, it is necessary to brush the primer together with the coil d. The long side of the lap joint is 3cm-8cm, and the short side is 10cm.. e. the lap joint of the short side of the lap joint, the end of the lap joint and the opposite parts of the lap joint should be sealed with sealing paste. In principle, the coil vertical wall end is fixed in the reserved groove with metal strip, and then sealed with sealing paste 3、 Paving method: 1. Full paving method: pave all color steel tile special waterproof coiled materials on the surface of color steel tile house. It should be laid horizontally, and the advantage is that it can completely achieve the waterproof and anti-corrosion effect on the roof. Especially for the nail hole of the roof. Most of the nail holes began to seep after three years. Solve the problem once and for all 2: Only for slits, it is best to do it twice, the lower one is 33cm, and the upper one is 50cm wide. The eaves should be hemmed twice 4、 Construction precautions: 1: the old roof request must not have dust, clean on the line, the old roof can be wiped with a cloth, if brush treatment agent, not too thick 2: The best thickness is 1.5mm or 2mm. The best choice of carcass is in the south 3: For the construction without carcass, it is better not to construct in foggy days or when the heavy rain stops. The moisture will produce bubbles 4: The lap joint between the long side and the short side of the coiled material shall not be less than 10cm.. 5: the lap joint between the coiled material and the coiled material, and between the coiled material and the reinforcing layer shall be solid, and the phenomenon of edge warping shall not exist. The water shielding test shall be conducted for the project with conditions 6. Don't open the waterproof layer just after the construction, because this kind of material is bonded. The longer the time is, the stronger the bonding is. If open two times on, will appear to bond not solid scene, it is necessary to brush our factory bottom treatment agent can thoroughly bond.