Roofing waterproof construction scheme pure dry goods come and collect.

The roof is the outermost part of every building, which protects the indoor environment and endures the wind and the sun, so water leakage will occur after a long time. Therefore, roof waterproofing has become an important part of the construction, but when carrying out roof waterproofing construction, it is generally necessary to formulate a roof waterproofing construction plan.

1. Basis for compiling roof waterproof construction:

1. Bidding documents of XXX waterproof project.

2. The current national standards and specifications related to construction, installation, quality inspection and acceptance:

Unified Standard for Construction Quality Acceptance of Building Engineering (GB53-28 Technical Specification for Waterproofing of Roofing Engineering (GB518-28)

Specification for Quality Acceptance of Roofing Waterproofing Engineering (GB 528-28)

1 Chinese People's * * and China's Construction Law

2 Chinese People's * * and China's Fire Protection Law

3 Chinese People's * * and China's Environmental Protection Law

4. Engineering design drawings, on-site construction conditions and on-site investigation data.

2. Overview of roofing waterproof project:

1. Project name: roofing waterproof project of XXX Hotel

2. Waterproof material selection: 3mm "Yuyang Zeli" brand elastomer modified asphalt waterproofing membrane

3. Construction method: hot melt method

4. Project quality: qualified

5. Waterproof professional contracting construction unit.

Prepare the acceptance plan of this project in advance to create conditions for ensuring the quality of the project.

for complex construction disciplines and important construction sites, specific construction plans should be prepared in advance and approved by the construction unit and supervision department.

2. Personnel preparation:

The engineering personnel of this project are arranged as follows:

Work contents of the type of work

1. Technical personnel make plans, formulate measures, sort out data, and make technical disclosure

2. Quality and safety supervision of quality and safety personnel, project acceptance

3. Pay-off of surveyors

4. Inform the procurement personnel of material supply in time for inspection

5. Major construction personnel remove impurities at the level. Coating adhesive, paving coiled material, surface treatment

6 Mechanical equipment maintenance, all mechanical gadgets, etc.

7 Sporadic projects

3. Material preparation:

Material properties

SBS modified asphalt waterproofing membrane is made of SBS modified asphalt as the main material, which is a new type of waterproofing membrane highly respected by the society in recent years, with high tensile strength, high elongation, ultraviolet resistance and temperature difference resistance. Hot-melt construction is adopted, and the coiled materials are hot-melt overlapped and fused into a whole to form a waterproof layer to achieve waterproof effect.

implementation standard: GB18242-28

auxiliary materials

mainly include: industrial gasoline, etc., which is used for adhesive cleaning machines and blowtorch fuel.

4. Equipment and mechanical equipment

The following mechanical equipment and tools are put into the construction plan of this project:

In addition to the above construction tools, we have also prepared enough small hand tools, such as rubber scraper, trowel and flat shovel, to meet the construction needs.

5. Other preparations before construction

① Before the waterproof layer construction, the drawings should be carefully reviewed and technical disclosure should be made. The "three inspections" system of self-inspection, handover inspection and full-time personnel inspection should be established in each working procedure, and perfect inspection records should be kept. Before the waterproof layer construction, the waterproof construction can only be carried out after the supervision unit has passed the inspection and acceptance of the grassroots.

(2) The waterproof layer shall be constructed by a professional waterproof team, and the operators shall hold the post certificate issued by the local construction administrative department.

(3) the base surface of the waterproof layer shall be completely cleaned of dust and sundries; The base must be firm, free from defects such as looseness and sand.

(4) the surface of the base is even and smooth, and there can be no prominent sharp corners and low pits. When checking with a 2m ruler, the gap between the ruler and the surface of the base should not exceed 5mm, and the gap is allowed to change gently.

(5) the adjacent surfaces of two grass-roots units form a corner, which should be circular or obtuse.

⑥ The base should be dry, and the moisture content is less than 9%. The measurement method is to cover the surface of the base with 1m square coil and let it stand for 4 hours. If there is no watermark on the surface of the base covered and there is no condensate mark on the surface of the coil near the base, the moisture content of the base is less than 9%.

IV. Roof waterproofing membrane construction

4.1 Construction technology

Basic treatment → Coating basic treatment agent → Additional treatment of details → Elastic thread → Laying 3mmSBS membrane → Hot melt welding lap joint → Laying 3mmSBS membrane → Hot melt welding lap joint → Hot melt welding lap joint → Acceptance of waterproof layer

4.2 Construction operation points

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4.2.2 brushing the base treatment agent: brush the base treatment agent on the surface of the treated base surface

with a long-handled roller brush, and brush it evenly, without brush leakage or exposure. After the primary treatment agent has been painted, hot melt construction can be carried out only when it is dry (generally it is not sticky) to avoid fire.

4.2.3 additional treatment of details: the corners, yin and yang corners, penetrating members and other detail nodes should be reinforced, and the width of the additional layer is 1/3 of the width of the coiled material, and the flat elevation is spread evenly. The method is to cut the coil according to the detail shape, paste it on the detail, and bake the bottom surface of the coil with a gasoline blowtorch after the size and shape are appropriate. When the bottom surface is in a molten state, it can be immediately pasted on the base layer that has been coated with a primary treatment agent, and the additional layer is required to be free from hollowing and compacted.

4.2.4 elastic line: on the surface of the treated and dried base, according to the width of the selected coil, the lap joint size (the lap width of both long and short sides is 8mm) is set aside, and the datum line of the coil is elastic, so that the coil can be laid according to this datum line.

When the adhesive layer on the bottom of the coil is black and mixed with microbubbles (a large number of bubbles are not allowed), roll the coil in time for sticking, and then perform the exhaust compaction process with one person.

4.2.6 The coiled materials for lap joints and ends must be baked evenly and comprehensively, and the asphalt between the coiled materials at the lap joints must be tightly fused, and molten asphalt is extruded from the edge end, and the extruded hot melt adhesive is scraped flat with a scraper and sealed at the edge end to ensure the sealing and waterproof function of the joints.

V. Precautions for finished product protection and safety

5.1. Construction workers should wear soft rubber soled shoes, and it is forbidden to wear hard soled shoes with nails. In the process of construction, it is forbidden to enter the site by personnel other than those in this process.

5.2, stacking and placing objects on the waterproof layer should be handled with care and paved with square wood.

5.3. The trolley legs used for construction shall be bandaged. If temporary shelves are set up for the waterproof layer, shelf tube's mouth shall be paved with plates to prevent the waterproof layer from being damaged.

5.4. After the waterproof layer is qualified, the protective layer shall be prepared in time. During construction, it is necessary to prevent construction tools such as trolleys or shovels from damaging the waterproof layer.

5.5. In case of local waterproof layer damage during construction, corresponding reinforcement measures should be taken in time to ensure the quality of waterproof layer.

5.6. The place where materials are stored and the construction site must be well ventilated.

after the construction of roofing waterproof project, the roofing has better functions of firmness, durability, waterproof, heat preservation, heat insulation, fire prevention and resistance to various adverse effects. Everyone should follow the principle of "prevention first, drainage second" in the construction process, and do a good job in waterproofing and drainage. The above content is the roofing waterproof construction scheme that Xiaobian shared with you today, hoping to help you.