Ua ntej thov, lub substrate yuav tsum ruaj, huv si, tsis muaj hmoov av, roj, xuab zeb, thiab dej sawv. Txhua qhov tawg los yog qhov tsis xws luag yuav tsum tau kho ua ntej, thiab cov ces kaum yuav tsum sib npaug. Qhov kub ntawm ambient yuav tsum siab tshaj 5 degree. Daim ntawv thov raug txwv nruj me ntsis thaum qhov saum npoo yog khov, khov, daus, lossis thaum qhov kub thiab txias yuav tsum poob qis dua 5℃hauv 48 teev.
Ua ntej thov, ua tib zoo do cov txheej hauv lub thawv kom tsis txhob muaj sedimentation. Siv nrog txhuam los yog scraper. Rau qhov chaw tiaj tus, siv ib lub tsho loj ntawm ib lub sijhawm. Rau qhov chaw ntsug, txhawm rau tiv thaiv dripping, thov ib txheej nyias ua ntej, cia nws qhuav me ntsis ua ntej siv lub tsho tiv no rau cov thickness uas xav tau. Yog xav tau ntau lub tsho tiv no, tos kom txog thaum txhua lub tsho tiv no qhuav tag (24 teev) ua ntej siv lwm yam. Siv ib txheej ntawm waterproof sealant ncaj qha rau pob zeb nto (2-3mm tuab) muab ob qho tib si waterproofing thiab adhesion. Nws ncav usable zog tom qab 7 hnub. Cov khoom no kuj tseem siv tau rau kev sib khi thiab ua kom tawg, ua kom pom kev zoo rau cov pob zeb, plasterboard, vuas, cib, marble, ntoo, thiab lwm yam khoom siv hauv tsev, ua rau nws tsim nyog rau sealing, caulking, thiab waterproofing cov ntaub ntawv no. Thaum siv rau hauv chav dej thiab chav dej, siv 1-2 txheej ntawm waterproof sealant (2-3mm tuab) ncaj qha rau cov pob zeb nto. Waterproofing yuav ua tiav tom qab 7 hnub lossis ntau dua ntawm kev ziab kom tiav. Cov khoom siv no tuaj yeem siv ua ke nrog polymer cementitious nplaum rau ru tsev waterproofing.
Tsis txhob cuam tshuam los nag lossis dej rau hauv 24 teev ntawm kev thov. Tom qab ua tiav kev kho, txheej tiv thaiv xws li cov cement mortar tuaj yeem siv tau, lossis nws tuaj yeem raug tso tawm. Tsis txhob sib cuag nrog daim tawv nqaij ntev ntev. Yog tias tawg rau hauv qhov muag, nrhiav kev kho mob tam sim ntawd. Tiv thaiv los ntawm hluav taws, tshav ntuj, thiab nag thaum lub sijhawm khaws cia thiab kev thauj mus los.
