Roof waterproofing is an important project for decoration. 1.5mm thick EPDM waterproof coiled material is used for the roof of the low sealing and dedusting distribution room in front of the furnace in this project, and 1.5mm thick chlorinated polyethylene rubber coiled material is used for the roof waterproofing of the coal bunker frame. The following will see what the roof waterproofing practices are for your reference.

屋面防水做法有哪些

What are the roof waterproofing practices

施工方法

Construction method

1)基層處理

1) Base course treatment

檢查找平層的質量及干燥程度并加以清掃，符合要求后涂刷基層處理劑，一次涂刷的面積不宜過大，確保涂刷面積大小能滿足當天施工需要。涂刷完畢4小時后即可鋪貼卷材

Check the quality and dryness of the leveling layer and clean it. Brush the base course treatment agent after meeting the requirements. The area of one brush should not be too large to ensure that the size of the brush area can meet the construction needs of the day. The coiled material can be paved 4 hours after painting

2)施工工藝流程

2) Construction process flow

基層表面清理、修補→涂刷基層處理劑→節點處附加增強處理→定位、彈線、試鋪→鋪貼卷材→收頭處理，節點密封→清理、檢查、修整→保護層施工。

Base course surface cleaning and repair → coating base course treatment agent → additional reinforcement treatment at nodes → positioning, snapping lines and trial paving → paving coiled materials → end treatment and node sealing → cleaning, inspection and repair → protective layer construction.

3)施工順序

3) Construction sequence

防水層施工時，應先做好節點、附加層和屋面排水比較集中部位的處理，然后由屋面Z低標高處向上施工。鋪貼天溝、檐口卷材時，宜順天溝、檐口方向以減少搭接。施工中按先高后低、先遠后近的原則，先施工鋼屋架坡屋面，后施工平屋面，并根據實際情況劃分流水施工段，組織平行流水施工。

During the construction of waterproof layer, the node, additional layer and the part with concentrated roof drainage shall be treated first, and then the construction shall be carried out from the low elevation of roof Z upward. When paving gutter and cornice coiled material, it should be along the direction of gutter and cornice to reduce overlap. During the construction, the steel roof truss slope roof shall be constructed first, and then the flat roof shall be constructed according to the principle of "high before low, far before near". The flow construction section shall be divided according to the actual situation, and the parallel flow construction shall be organized.

4)搭接方法

4) Lapping method

屋面防水做法有哪些

What are the roof waterproofing practices

鋪貼卷材時采用搭接法，相鄰兩幅卷材的搭接縫應錯開，鋼屋架處坡屋面的搭接縫順流水方向搭接，垂直于屋脊方向的接縫順主風向搭接。

Lap joint method shall be adopted when paving coiled materials. The lap joint of two adjacent coiled materials shall be staggered. The lap joint of the sloping roof at the steel roof truss shall be overlapped along the flow direction, and the joint perpendicular to the ridge direction shall be overlapped along the main wind direction.

5)屋面特殊部位的鋪貼要求

5) Paving requirements for special parts of roof

檐口：將鋪貼到檐口端頭的卷材截齊后壓入凹槽內，然后將凹槽用密封材料嵌填密實。用帶墊片的釘子固定，釘子釘入凹槽內釘帽及卷材端頭用密封材料封嚴。

Cornice: cut the coiled material paved to the cornice end, press it into the groove, and then embed the groove with sealing material. Fix with a nail with gasket, nail the nail into the groove, and seal the nail cap and coil end with sealing material.

天溝、檐口及落水口：天溝、檐口處卷材鋪設前，應先對落水口進行密封處理，落水口周圍直徑500mm范圍內用防水涂料涂刷封堵。落水口與基層接觸處留設寬20mm、深20mm的凹槽嵌填密封材料;天溝、檐口鋪貼卷材時從溝底開始順天溝從落水口向分水嶺方向鋪貼，邊鋪邊用刮板從溝底中向兩側刮壓，趕出氣泡，使卷材鋪貼平整，粘貼密實。

Gutter, cornice and outfall: before laying coiled materials at gutter and cornice, the outfall shall be sealed and sealed with waterproof paint within 500mm around the outfall. 20mm wide and 20mm deep grooves shall be reserved at the contact between the outfall and the base course to be filled with sealing materials; When paving coiled materials on gutters and cornices, the coiled materials shall be paved along the gutter from the gutter bottom to the watershed, scraped from the bottom of the gutter to both sides with a scraper while paving to drive out bubbles, so as to make the coiled materials paved smoothly and pasted compactly.

泛水與卷材收頭：泛水部位卷材鋪貼前，先進行試鋪，將立面卷材長度留足，先鋪貼平面卷材至轉角處，然后從下向上鋪貼立面卷材。鋪貼完成后，將端頭裁齊，用密封材料封嚴堵實。陰陽角：陰陽角處的基層涂膠后用密封膏涂封距角處100mm，再鋪一層卷材附加層，鋪貼后剪縫處用密封膏封固。

Flashing and coiled material ending: before paving the coiled material at the flashing part, the trial paving shall be carried out, the length of the facade coiled material shall be reserved, the plane coiled material shall be paved to the corner, and then the facade coiled material shall be paved from bottom to top. After the paving is completed, the ends shall be cut and sealed with sealing materials. Internal and external corners: after the base course at the internal and external corners is coated with sealant, seal the corner 100mm away, lay an additional layer of coiled material, and seal the joints with sealant after paving.

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