It is used to test the resistance of petroleum asphalt felt, polymer roofing waterproofing membrane and other waterproofing material products to standing water or the ability of limited surface to withstand water pressure. This method is used for low-pressure applications of membranes, such as roofing, base layer, and air barrier. Layers and so on.

GB/T328.10-2007 Method A, GB18242-2000, GB18243-2000