防水施(shi)工(gong)前(qian)，應(ying)檢查上道工(gong)序找(zhao)坡層的剛度，檢查排水坡度是否(fou)滿足設計要求，是否(fou)潮濕，表(biao)面(mian)(mian)是否(fou)沒(mei)有(you)清理干(gan)凈(jing)，對于有(you)孔(kong)洞凸凹不平(ping)(ping)或裂(lie)縫現(xian)象的，應(ying)用(yong)砂漿填實(shi)抹(mo)平(ping)(ping)。表(biao)面(mian)(mian)干(gan)燥和(he)清理干(gan)凈(jing)方可施(shi)工(gong)。另外，SBS卷材屋(wu)面(mian)(mian)防水施(shi)工(gong)不宜在溫度高于35℃和(he)低(di)于5℃的情況下施(shi)工(gong)，禁止雨、霧、雪、大風天(tian)氣施(shi)工(gong)。

    在防水施(shi)(shi)工(gong)(gong)過程中(zhong)，對易產生滲漏的薄弱部位（施(shi)(shi)工(gong)(gong)縫、變形縫、抗拔樁頭、穿(chuan)墻(qiang)管(guan)等）進行重(zhong)點質量(liang)控制，制定有針對性的施(shi)(shi)工(gong)(gong)技術措施(shi)(shi)，施(shi)(shi)工(gong)(gong)中(zhong)加強質量(liang)管(guan)理，確保上述部位的防水施(shi)(shi)工(gong)(gong)符合(he)設(she)計(ji)要求。

    大連防水施工在立面和平面的轉角處，卷材的接縫應留在平面上，距立面不應小于600mm.在鋪貼防水卷材時應將卷材下面的空氣排凈，粘合面完全接觸，使卷材不皺褶、不鼓起。要碾平壓實，接縫必須粘貼封嚴。

     影(ying)響防(fang)水(shui)工(gong)(gong)(gong)(gong)程(cheng)(cheng)特(te)別(bie)是(shi)地下防(fang)水(shui)工(gong)(gong)(gong)(gong)程(cheng)(cheng)質(zhi)量的(de)因素有兩條，一(yi)是(shi)設計(ji)問(wen)題，二(er)(er)是(shi)施(shi)工(gong)(gong)(gong)(gong)問(wen)題。當前設計(ji)對防(fang)水(shui)工(gong)(gong)(gong)(gong)程(cheng)(cheng)只(zhi)談采(cai)用什么材料和確定(ding)工(gong)(gong)(gong)(gong)程(cheng)(cheng)的(de)防(fang)水(shui)等級很少畫出節點做法和細(xi)部大樣(yang)。這樣(yang)就沒(mei)有從源頭上去(qu)規范(fan)防(fang)水(shui)工(gong)(gong)(gong)(gong)程(cheng)(cheng)的(de)一(yi)些做法，第二(er)(er)是(shi)施(shi)工(gong)(gong)(gong)(gong)的(de)問(wen)題，施(shi)工(gong)(gong)(gong)(gong)單位，特(te)別(bie)是(shi)總包單位承接工(gong)(gong)(gong)(gong)程(cheng)(cheng)后(hou)只(zhi)是(shi)按規定(ding)找一(yi)個有資質(zhi)的(de)防(fang)水(shui)施(shi)工(gong)(gong)(gong)(gong)單位進(jin)行(xing)分(fen)包施(shi)工(gong)(gong)(gong)(gong)，而對于工(gong)(gong)(gong)(gong)程(cheng)(cheng)前期如何進(jin)行(xing)圖紙會(hui)審根(gen)據(ju)工(gong)(gong)(gong)(gong)程(cheng)(cheng)的(de)具體情況(kuang)（包括施(shi)工(gong)(gong)(gong)(gong)環境(jing)氣候的(de)情況(kuang)，

    作業(ye)條(tiao)件地(di)下水位的(de)(de)(de)高低(di)以及地(di)下水有無侵(qin)蝕(shi)作用等）進(jin)行(xing)材料的(de)(de)(de)認定(ding)和施工(gong)方(fang)案的(de)(de)(de)編審等主要技(ji)術(shu)環節沒有引起像主體工(gong)程(cheng)那樣重視，而(er)施工(gong)中又(you)很少去跟蹤(zong)檢(jian)查、旁站監(jian)督(du)，故許(xu)多(duo)細部處理欠妥，導致(zhi)工(gong)程(cheng)完工(gong)就出(chu)現(xian)問題(ti)，嚴(yan)重的(de)(de)(de)直接影響(xiang)使用，施工(gong)單位在花大(da)量(liang)的(de)(de)(de)人力物力去進(jin)行(xing)維修（而(er)且效果往(wang)往(wang)不好）既影響(xiang)甲乙(yi)雙方(fang)的(de)(de)(de)關系也(ye)影響(xiang)施工(gong)單位的(de)(de)(de)聲譽，同(tong)時也(ye)加大(da)了工(gong)程(cheng)成本。