1. Tsis muaj kev sib koom ua ke ntawm cov khoom siv dej tsis zoo. Kev hloov tshiab tas li ntawm cov cuab yeej siv dej tsis zoo kuj tau ua kom muaj kev sib txawv ntawm cov khoom siv dej tsis zoo. Feem ntau hais lus, nws tiv thaiv dej nag, dej hauv av, kev lag luam thiab pej xeem cov dej thiab cov dej ntws tawm, cov kua dej corrosive, noo noo hauv huab cua, Cov ntaub ntawv uas cuam tshuam cov vaj tse xws li chav dej yog qhov sib sau ua ke hu ua cov ntaub ntawv tsis muaj dej.
2. Waterproof txheej kuj yog ib yam ntawm cov khoom siv waterproof.
3. Waterproof txheej yog hais txog cov txheej txheem uas tuaj yeem tiv thaiv los nag lossis dej hauv av los ntawm kev xau.
4. Muaj peb yam tseem ceeb ntawm cov khoom siv dej tsis zoo: cov ntaub ntawv tsis muaj dej tsis zoo, uas yog siv rau hauv kev tsim kho engineering, xws li lub ru tsev thiab phab ntsa sab nrauv; polyurethane waterproof cov ntaub ntawv, uas muaj volatile toxic gases, yuav tsum nruj me ntsis kev tsim kho thiab yog kim; tshiab polymer cement-raws li cov ntaub ntawv tsis muaj dej tsis zoo, cov khoom siv yog tsim los ntawm cov khoom siv organic polymer kua thiab cov hmoov inorganic. Nws combines cov yam ntxwv ntawm siab elasticity ntawm cov ntaub ntawv organic thiab zoo durability ntawm cov ntaub ntawv inorganic. Tom qab txheej txheej, nws tsim muaj lub zog siab thiab tawv tsis muaj dej tsis zoo, uas yog ib qho khoom siv rau kev tiv thaiv hauv tsev.
5. Waterproof txheej tuaj yeem muab faib ua hom emulsion, hom hnyav, hom reactive thiab hloov asphalt raws li txheej txheej thiab daim ntawv.