Background introduction

Exterior wall waterproofing is a branch waterproofing project to ensure that the structure of buildings (structures) is not affected by water and that the interior space is not harmed by water. Exterior wall waterproofing plays an important role in the whole construction project. Exterior wall waterproofing project involves many exterior wall structures such as non-load-bearing walls and exterior walls of buildings (structures). Its function is to make buildings or structures design durable, to prevent the leakage of rainwater and domestic water and the erosion of groundwater, to ensure that building structures and interior spaces are not polluted, and to provide a comfortable and safe living environment for people.

Key parts of waterproofing

According to the structural characteristics of the external wall, the key parts of waterproofing are:

1. Waterproof of large surface of concrete structural slab, pay attention to the influence of follow-up process on waterproof layer;

2. Peripheral parts of each window;

3. The joints of beams, eaves, floors and walls.

Waterproof treatment measures

According to the analysis of key parts of kitchen waterproofing, targeted waterproofing treatment is carried out.

1. Waterproofing of large surface of concrete structural slab

According to the project situation, waterproofing materials such as polyurethane, JS and so on can be used to construct according to the design thickness. The construction scheme can adopt the methods of painting, rolling and spraying. At the same time, attention should be paid to the effect of subsequent tiles on the waterproof layer.

2. Peripheral parts of windows

First check the surrounding density, such as the window frame concrete is not compact, there is a risk of leakage. The rigid waterproofing material and flexible waterproofing material are combined to achieve the effect of sealing and waterproofing.

3. The junction of beams, eaves, floors and walls

According to the project situation, we can consider using permeable materials to strengthen the compactness of the base surface at the joint, using polymer cement and other materials to make arc, using structure to drain water. The rigid waterproofing material and flexible waterproofing material are combined to achieve the effect of sealing and waterproofing.

Attention

During construction, if waterproof foundation treatment has been done, the original waterproof layer should not be destroyed during secondary waterproofing.

Waterproofing materials must conform to the relevant national standards, and have the corresponding test reports, factory certificates and other information.

During construction, professional construction plan and professional construction team must be established.

In waterproofing construction of exterior wall, attention should be paid to the safety of high-altitude operation and the prevention of material falling.

After the completion of the construction, according to the requirements of protection, and waterproof test, acceptance of qualified before the next process of construction can be carried out.