What is rigid waterproof, flexible waterproof?
3, not all waterproof only sub-rigid waterproof and flexible waterproof, such as metal roofing. Basement concrete structure waterproofing is usually not called rigid waterproof.
2, flexible waterproofing refers to the waterproof layer in the external force, the waterproof material itself has a certain degree of stretch ductility (such as rubber-like flexibility), to resist the elastic layer of elasticity within the grassroots cracking, showing a certain degree of flexibility. Such as rubber-like membrane waterproof, polyurethane coating waterproof.
1, rigid waterproof means that: waterproof layer by the tensile force is greater than the tensile strength of waterproof materials (including settlement deformation, temperature deformation, etc.), waterproof layer of brittle cracking caused by leakage of water, known as rigid waterproof. (Especially the "water leakage" waterproof layer), waterproof concrete mortar waterproof layer, thin layer of inorganic rigid waterproof layer (such as "water leakage" waterproof layer), and so on.
4, rigid waterproof and rigid waterproof material is not the same concept, the same flexible waterproof and flexible waterproof material is not the same concept. Such as polyethylene polypropylene is a flexible waterproofing membrane, with polymer mortar (or bonded paste) bonded polyethylene polypropylene composite waterproof layer, it is rigid waterproof, because the mortar binder in the grassroots deformation will crack , The web between the web and the web can not withstand the deformation of the grassroots, and the water infiltrates from the lap to cause damage to the waterproofing layer.
