1. Flow gradient of air conditioning board, line, etc

EPS構件外保溫墻體易滲漏的部位主要包括：線條、空調板、飄窗板、女兒墻、門窗洞口等部位。這些部位都有一個共同的特點：排水速度慢。由于主體施工偏差以及外保溫施工偏差的存在，流水坡度太小甚兜水，由于防護面層并不是不透水的，必然會導致保溫墻體的滲漏。

The easy leakage parts of EPS component external insulation wall mainly include: line, air conditioning board, floating window board, parapet, door and window opening, etc. These parts have a common feature: slow drainage speed. Due to the main construction deviation and external insulation construction deviation, the running water slope is too small or even water is carried. Because the protective surface layer is not impermeable, it will inevitably lead to the leakage of the insulation wall.

2、EPS構件外保溫施工前，應提前安裝預埋管件

2. Embedded pipe fittings shall be installed in advance before EPS component external insulation construction

根據規范要求，應在外保溫施工前將落水管卡、空調孔、空調支架等各種預埋管件提前安裝完畢(向下有一定的斜度)，而在實際施工時，往往因為工期等各種原因，各種預埋管件后安裝，破壞了防護面層的整體性，若是修補不到位，必然會導致墻體滲漏。例如：落水管卡部位就是外保溫常見的滲漏部位之一。

According to the specification requirements, various embedded pipe fittings such as downcomer clamp, air conditioning hole and air conditioning support shall be installed in advance (with a certain slope downward) before the external insulation construction. During the actual construction, various embedded pipe fittings are installed after the installation due to various reasons such as construction period, which destroys the integrity of the protective surface. If the repair is not in place, it will inevitably lead to wall leakage. For example, the downcomer clamp is one of the most common leakage parts of external insulation.

3、保溫層不能擋住門窗泄水孔

3. The insulation layer shall not block the drain holes of doors and windows

先安裝門窗再進行外保溫的施工，是目前常采用的施工工序，也是規范所允許的，但后做保溫必然存在外保溫“吃口”的問題，在施工時應特別注意門窗下口的保溫層高于門窗泄水孔的高度，泄水孔內水直接進入保溫層內。

Installing doors and windows first and then carrying out the construction of external insulation is a commonly used construction process at present, which is also allowed by the specifications. However, there must be a problem of "eating" of external insulation. During construction, special attention should be paid to that the insulation layer at the lower opening of doors and windows is higher than the height of the drain hole of doors and windows, and the water in the drain hole directly enters the insulation layer.

4、聚苯板的板縫處理

4. Seam treatment of polystyrene board

在聚苯板薄抹灰外保溫體系中，板與板之間的板縫是體系中薄弱的部位，沿板縫開裂是目前的外保溫應用中的常見現象，因而板縫的處理非常關鍵。根據規范要求，大于1.5mm以上的板縫可以采用EPS板板條填塞，而在實際施工中，很難有合適厚度的板條，大多簡單處理，有的干脆不處理，甚有的采用粘結劑填補板縫。從而易造成板縫開裂導致墻體滲漏。因而正確的板縫處理是防止外保溫體系開裂及滲水的重要施工工序。

In the polystyrene board thin plastering external insulation system, the plate joint between plates is the weakest part of the system. Cracking along the plate joint is a common phenomenon in the current application of external insulation, so the treatment of plate joint is very key. According to the requirements of the specification, the slab joints greater than 1.5mm can be filled with EPS slab. However, in the actual construction, it is difficult to have a slab with appropriate thickness. Most of them are simply treated, some are not treated at all, and some even use adhesive to fill the slab joints. Thus, it is easy to cause cracking of slab joints and wall leakage. Therefore, correct plate joint treatment is an important construction process to prevent cracking and water seepage of external insulation system.

平窗口部位：在目前外保溫構造圖集中，平窗口大多采用先安裝窗框再做保溫，大多甲方因此設計存在外保溫“吃窗”以及不利于窗戶的保護等一般不愿采用，而后裝窗易于破壞保溫導致漏水，針對此問題，我們可以采取砂漿做企口(現澆結構可直接澆注成型)的方案，既便于施工，又利于防水，其節點構造圖。窗側口保溫由于采用薄板施工，可以采用滿貼法以利于提高窗口部位的抗滲漏性。

Flat windows: in the current set of external thermal insulation structural drawings, most flat windows are installed with window frames before thermal insulation. Therefore, Party A is generally reluctant to use external thermal insulation "eating windows" and not conducive to the protection of windows. Later installation of windows is easy to damage the thermal insulation and lead to water leakage. In view of this problem, We can adopt the scheme of mortar as tongue and groove (cast-in-situ structure can be directly cast and formed), which is not only convenient for construction, but also conducive to waterproof, and its node structure diagram. Due to the thin plate construction, the full paste method can be used to improve the leakage resistance of the window.