Parapet common leakage types

Steel Structure Building-Parapet common leakage types

A. Parapet concrete pressure top or cement mortar pressure top without waterproofing treatment

Parapet concrete pressure top or cement mortar pressure top without waterproof treatment, there is no drainage slope, rain, snow water from the pressure top cracks into the wall, after repeated freezing and thawing cycle, the cracks are getting wider and deeper, into the rain, snow water is also more and more, forming a vicious cycle, to make a lot of rain, snow water from the back of the roof waterproofing layer and exterior wall waterproofing layer leakage to the interior.

B. The top of the external insulation daughter wall did not do the overall pressure top, resulting in the insulation layer and the main wall separation, rain, snow water from the separation joints into a large number of parts, causing leakage inside and outside the exterior wall, especially the exterior wall door window parts.

C. Brick structure of the parapet does not do the whole package waterproofing treatment, waterproofing layer only to the flooding parts, so that rain from the exposed brick wall parts and flooding parts of the waterproofing layer head leakage into the interior.

D. Coil waterproofing layer received in the low parapet inside the corner part and did not do fixed, sealing treatment, and no overall pressure top, coil waterproofing layer opening, and daughter wall separation, resulting in indoor leakage.

Some parapet although set up metal plate pressure top, but the metal plate pressure top failed to buckle cover the coil waterproofing layer head, rain from fixed, sealed coil head parts into the waterproofing layer below the roof, resulting in indoor leakage.