The upper end of the steel roof ridge vent is empty, so the rain and snow protection function of the ridge ventilator can not be ignored. If it is in a place with less rain and snow, the pressure on the rainproof plate of the roof air building is less. At this time, clients can choose the FRP daylighting plate with better light transmission, which can make the interior space of the plant more open and bright. On the other hand, if it is in a place with a lot of rain and snow, clients need to pay extra attention. Due to the backlog of rain and snow, this has caused great external pressure on the roof air-floor rain-proof panels, so the color steel plate is the most appropriate choice at this time. The color steel plate has high compressive strength, higher tolerance to rain and snow accumulation, and better rain and snow protection effect. But the color steel plate also has a drawback, that is, the color steel plate has no light transmission effect, so the lighting effect inside the industrial plant is not as good as the light transmission effect of the FRP plate.

The length of the weatherproof board of the metal building ridge vents is mainly determined according to the distance between the frame of the streamlined natural ventilator, and the width of the weatherproof board is determined according to the two diagonal brackets in the middle of the frame of the ridge ventilator. After the size of the FRP daylighting board is determined, it can be cut on the shearing machine. After completion, holes will be punched at the corresponding positions on the four sides to prepare for the subsequent installation work.