III Sar pvc防水卷材可用于屋脊和天沟的局部软防水，可有效解决彩涂板结构防水无法解决的接缝和渗水问题。
I Laying of insulation cotton:
1. Before laying the color coated board, check whether the thickness of the thermal insulation cotton is uniform, and check whether the warranty and certificate meet the design requirements.
2. The insulation cotton shall be laid tightly. There
shall be no gap between the insulation cotton. If there is, it shall be fixed in time.
II Laying of color coated plate top plate:
When laying the interior and exterior color coated plates on the roof, the overlapping of each edge shall be
carried out in strict accordance with the specification requirements. When installing the cornice, the installation position shall be determined in combination with the bottom plate and glass wool, starting from the cornice and then laying from bottom
to top. Check the straightness at both ends and the straightness of the plate to ensure the installation quality.
III Sar-pvc waterproof coiled plate can be used for local soft waterproof of roof ridge and gutter, which can effectively solve the
problems of joint and ponding leakage that cannot be solved due to the waterproof of color coated plate structure.
The fixing point of PVC coiled material shall be fixed on the peak surface of profiled plate to ensure reasonable stress of fixed
parts and reasonable waterproof structure.
IV After the above operations, we shall control the installation of profiled steel plate:
1. The profiled metal plate shall be installed flat and straight, and the plate surface shall be free of construction
residues and dirt. The cornice and the lower end of the wall shall be in a straight line, and there shall be no untreated wrong drilling holes.
2. Inspection quantity: spot check 10% according to the area, which shall not be less than 10 ㎡.
3. Inspection method: observation and inspection
4. Installation deviation of profiled metal plate:
5. The allowable deviation of profiled metal plate installation shall comply with the provisions in the table below.
6 inspection quantity:
parallelism between cornice and ridge: 10% of the length shall be spot checked and shall not be less than 10m. Other items: one spot check shall be conducted every 20m, and not less than two shall be conducted.
7 inspection method: check with stay
wire, hanging wire and steel ruler.