What are the differences between different roof waterproof construction measures?

What are the differences between different roof waterproof construction measures?

The waterproof construction of building roof is an important link in the construction of the entire construction project. If the waterproof technology is immature and the waterproof measures are improperly applied, it will cause roof leakage, affect the service life of the building, and directly affect the normal production activities and life of the people. According to statistics, there are several reasons for roof leakage: materials account for 20%~22%, design accounts for 18%~26%, construction accounts for 45%~48%, management and maintenance accounts for 6%~15%. Therefore, this article focuses on the construction of roof waterproofing.

First, material selection

1. Asphalt tile roof:

1. The main waterproof material is asphalt waterproof coil, which has good waterproof performance and durability.

2. Auxiliary materials, including special glue, waterproof tape, etc., are used for pasting and sealing the coil.

2. SLATE roof:

1. The gap between the slabs is the key to waterproof, and the commonly used waterproof materials include waterproof paint and sealant.

2. Before laying the SLATE, the base layer needs to be painted with waterproof paint or laid with waterproof coil to enhance the overall waterproof effect.

3. Coated waterproof roof:

1. The main waterproof material is waterproof coating, such as asphalt based waterproof coating, polymer modified asphalt waterproof coating and synthetic polymer waterproof coating.

2. According to the type of coating and design requirements, it may be necessary to add matrix reinforcement materials in the coating waterproof layer, such as polyester non-woven fabrics and chemical fiber non-woven fabrics.

4. Rigid waterproof roof:

1. The main waterproof material is concrete, and the waterproof performance of concrete is improved by adding admixtures such as expansion agent, water reducing agent and water repellent agent.

2. When pouring concrete, it is necessary to add two-way steel mesh to enhance the stiffness and strength of the waterproof layer.

Second, construction steps

1. Asphalt tile roof:

1. Clean the base to ensure that it is dry, smooth and free of oil.

2. Apply base treatment agent, such as base oil or asphalt base coating.

3. Lay asphalt waterproof coil, pay attention to the overlap and paste firmness of the coil.

4. Hot melt, cold glue or seal the lap joints of the coil.

2. SLATE roof:

1. Clean the base, paint waterproof paint or lay waterproof coil.

2. Lay SLATE tiles, paying attention to the width and depth of the gap between the tiles.

3. Use special sealant to fill and seal the gap.

3. Coated waterproof roof:

1. Clean the base to ensure that it is dry, smooth and free of oil.

2. Apply waterproof paint, pay attention to uniform coating, prevent porosity and other phenomena.

3. Maintain after brushing, and wait for the paint to dry and cure.

4. Rigid waterproof roof:

1. Pay attention to the engineering quality of the base, and ensure that the structural layer is the whole cast-in-place reinforced concrete.

2. Strict screed layer and isolation layer operation construction to ensure smooth slope and smooth surface.

3. Pour concrete and add admixtures to improve waterproof performance.

4. Lay two-way steel mesh in the concrete to enhance the stiffness and strength of the waterproof layer.

Third, construction details

1. For the roof with large slope, the hanging tile waterproof scheme can be used to ensure that the lap between the tiles is tight.

2. During waterproof construction, pay attention to sealing and waterproof measures for exhaust ports and skylights.

3. Every completion of a construction process, it is necessary to carry out hidden acceptance, to ensure that the quality is qualified before the next process construction.

4. Maintenance and maintenance

1. Regularly check the condition of the waterproof layer of the roof, timely repair loopholes and damage, to avoid damage caused by long-term use and natural factors.

2. Clean and inspect the roof before the rainy or snow season to ensure that the drainage system is unimpeded.

3. For coated waterproof roofing, it is necessary to regularly apply waterproof coating for maintenance and maintenance to extend the service life of the waterproof layer.

To sum up, there are great differences in the selection of materials, construction steps, construction details and maintenance of roof waterproof construction measures of different houses. When choosing waterproof construction measures, it is necessary to comprehensively consider the specific situation and choose the most suitable waterproof materials and construction methods.