1. When laying PVC waterproof rolls, attention should be paid to the construction environment temperature, and the use temperature of the rolls should be above -5 ℃. When using the full adhesion method for construction, the temperature for using the roll material can only be above 5 ℃.

2. When laying PVC waterproof rolls, additional layers should be applied to special areas.

3. Attention should be paid to construction protection, and the rolls should be temporarily fixed before the end of each day's construction to prevent them from being blown up by the wind.

4. The construction of the waterproof layer should be carried out after the previous process is completed, and cross construction is not allowed. If it is necessary to install equipment on a roof with pre installed waterproofing membranes, an additional layer treatment should be applied to the equipment foundation. If it is necessary to cover the roof with a high profile on the waterproofing layer, it must be inspected and approved before proceeding.