● Grassroots requirements: The grassroots should be flat, firm, clean, without hollowing, and the internal and external corners should be made into rounded corners.  

Construction requirements: The waterproof coating should be applied thinly according to the design requirements and construction specifications, with one or two layers of fiberglass mesh cloth as the reinforcement layer in the middle. The reference dosage per square meter is 3-5kg, the coating thickness is 1.5-3mm, and the interval between each layer is more than 8h. The overlap width is 8-10cm, and the upper and lower layer overlap joints should be staggered.  

Construction should not be carried out when the wind speed is above level five.  

● Fire and sun protection.  

After the completion of the waterproof layer, if there are wrinkles, voids, or bubbles, they should be cut open to release air, and then reinforced with coating and fiberglass cloth.