Outdoor temperature below 5°C is forbidden for roof waterproof construction

The reporter was informed that in order to guarantee construction quality in winter and safety of construction workers, the CAB requires winter construction companies to strictly follow the construction regulations. Construction masonry materials are forbidden to be used in projects after water soaking and freezing, and roof waterproofing projects and external walls. The external thermal insulation project should be constructed with no wind and fine weather. When the outdoor temperature is lower than 5°C, rain or snow weather or the base layer is wet, it is strictly forbidden to carry out the roof waterproofing project and the external thermal insulation project construction. When the outdoor temperature is lower than 2°C, outdoor painting is strictly prohibited.

At the same time, the SAFE requested that indoor paints, paints, and brushing projects should be conducted under heating conditions, and special personnel should be responsible for testing temperatures and opening and closing windows and doors to facilitate ventilation and remove moisture. Among them, the construction temperature of inner wall surface latex paint is not lower than 10°C, the ambient temperature of indoor imitation porcelain paint finish is not lower than 5°C, and the indoor temperature is kept in balance. The ambient temperature of interior wall spray and brushing construction is not lower than 5°C. °C, relative humidity should be 60%.