涂刷防水層(ceng)的基層(ceng)應(ying)按設(she)計抹好找平層(ceng)，要求抹平、壓(ya)光(guang)、堅實平整，不起砂，含水率低于9%，陰陽(yang)角處應(ying)抹成圓弧角。涂刷防水層(ceng)前應(ying)將涂刷面上(shang)的塵(chen)土(tu)、雜物，殘留的灰漿硬塊(kuai)，有突出的部分處理、清掃(sao)干凈。

防水施(shi)(shi)工(gong)要求刮(gua)涂(tu)，不得(de)用(yong)刷子(zi)涂(tu)刷。對(dui)于(yu)聚氨酯防水施(shi)(shi)工(gong)前先用(yong)稀料拌制(zhi)聚氨酯基(ji)層(ceng)(ceng)涂(tu)液涂(tu)刷到基(ji)層(ceng)(ceng)上，使(shi)基(ji)層(ceng)(ceng)的空隙和粉(fen)塵清除，再用(yong)聚氨酯進行刮(gua)涂(tu)。這(zhe)樣施(shi)(shi)工(gong)的聚氨酯不會出現氣泡(pao)，且便于(yu)施(shi)(shi)工(gong)。當(dang)聚氨酯過(guo)于(yu)粘稠時可適當(dang)摻(chan)加(jia)稀料調(diao)整。但不得(de)過(guo)于(yu)稀薄(bo)，降低聚氨酯的強度。

大連防(fang)水施(shi)工施(shi)工期間(jian)應蓋緊(jin)桶蓋，以防(fang)涂(tu)料結(jie)皮。涂(tu)刷(shua)過程中(zhong)如需停頓，需將刷(shua)子(zi)或滾筒及時(shi)浸沒(mei)在涂(tu)料中(zhong)，涂(tu)刷(shua)完成(cheng)后立(li)即用(yong)清水洗凈所有器具。可采用(yong)滾涂(tu)、噴涂(tu)和(he)刷(shua)涂(tu)三種(zhong)方法(fa)(fa)。(施(shi)工方法(fa)(fa)同(tong)內墻(qiang))

防水施(shi)工必須等待上(shang)一遍(bian)乳膠漆膜干透(tou)后，方能進行(xing)下(xia)一道施工(gong)，刷涂前應(ying)對(dui)上(shang)一遍(bian)漆膜進行(xing)清理后施工(gong)。涂料的干燥(zao)硬化(hua)是(shi)通過水分蒸發(fa)的物理過程(cheng)，因此(ci)，較高的空氣濕度或低(di)溫會延緩涂料干燥(zao)硬化(hua)的時間(jian)在25℃，相對(dui)濕度50%情況下(xia)，覆涂時間(jian)為2-3小(xiao)時以上(shang)。

防(fang)水(shui)(shui)(shui)施工(gong)(gong)合(he)同(tong)(tong)是防(fang)水(shui)(shui)(shui)工(gong)(gong)程施工(gong)(gong)前(qian)存在(zai)的(de)(de)一種書面協議，它規(gui)定了(le)防(fang)水(shui)(shui)(shui)施工(gong)(gong)單(dan)位和承包單(dan)位之間的(de)(de)權益(yi)與義務。正(zheng)規(gui)簽(qian)訂的(de)(de)防(fang)水(shui)(shui)(shui)施工(gong)(gong)合(he)同(tong)(tong)能保證防(fang)水(shui)(shui)(shui)施工(gong)(gong)工(gong)(gong)程正(zheng)常、有效和安(an)全的(de)(de)進(jin)行，同(tong)(tong)時防(fang)水(shui)(shui)(shui)施工(gong)(gong)合(he)同(tong)(tong)也是日(ri)后處理工(gong)(gong)程糾紛的(de)(de)重(zhong)要憑證。