Roof waterproofing roll-roofing direction of what requirements

Waterproofing roofing in the direction of coil paving and roof slope, the specific provisions are as follows:

① roof slope is less than 3%, the coil should be parallel to the ridge of the roof paving;

② roof slope in 3% to 15%, the coil can be parallel or vertical ridge paving;

③ roof slope is greater than 15% or the roof is subjected to vibration, asphalt waterproofing roll-roofing vertical ridge paving, high polymer modified bitumen waterproofing roll-roofing and synthetic polymer waterproofing roll-roofing can be parallel or vertical ridge paving;

③ waterproofing membrane paving direction is as follows Ridge paving, polymer modified asphalt waterproofing roll-roofing and synthetic polymer waterproofing roll-roofing can be parallel or perpendicular to the ridge paving;

④ upper and lower layers of roll-roofing shall not be paved vertically with each other.

The following diagram for the coil horizontal paving lap requirements: