Roofing waterproofing practices Roofing precautions
The roof is the outermost protective member of the building, which is mainly used to resist any unfavorable phenomena such as wind, thunder and lightning, and to ensure that the building can be sturdy and durable. Among them, waterproof is the most important aspect of the roof construction process. The most typical method in roofing waterproofing is the waterproofing of coiled roofs. The following small series for everyone to introduce the roof waterproof practices and roof waterproof precautions.
Roof waterproofing practices
1, grassroots processing
Check the quality of the screed and the degree of dryness and clean it up. After meeting the requirements, brush the primer treatment agent. The area of ​​the brushing should not be too large. Ensure that the size of the brushing area can meet the construction requirements of the day. After 4 hours of painting, the roll can be laid.
2, construction process
Base surface cleaning, repairing → brushing base treatment agent → additional reinforcement processing at the node → positioning, elastic line, trial shop → paving coil material → receiving end treatment, node sealing → cleaning, inspection, trimming → protective layer construction.
3, construction sequence
When constructing the waterproof layer, the node, the additional layer and the roof drainage should be dealt with firstly, and then the construction should be started from the lowest elevation of the roof. When paving gutters and cornices, it is advisable to reduce the overlap by guttering in the direction of the gutter and cornice. According to the principles of high first, low first, and longest first and last, the construction of steel roof sloping roof and construction of flat roof will be carried out firstly. The flow construction section will be divided according to the actual situation and the parallel flow construction will be organized.
4, overlapping method
Lapping method is adopted when laying coils. Lapping joints of two adjacent coils should be staggered. Lapping joints at the sloping roof of the steel house truss in the direction of the flowing water, and the joints perpendicular to the ridge direction should be lapped in the direction of the prevailing wind direction. .
5. Requirements for paving special parts of roof
Mouthwash: The web that is applied to the end of the mouthpiece is cut into the groove, and then the groove is sealed and filled with the sealing material. Secured with a nail with a gasket, the nail is nailed into the groove and the cap and the end of the coil are sealed with a sealing material.
Gutters, sluice gates, and sinkholes: Prior to the laying of the coils in the gutters and cornices, the sluice gates should be sealed and sealed with a waterproof coating within a diameter of 500 mm around the sluice gates. A groove with a width of 20mm and a depth of 20mm is embedded in the contact area between the sink and the base layer; when the gutter and the cornice are applied to the coil, the sundial groove starts from the bottom of the groove and is laid down from the water outlet to the watershed direction. The scraper scrapes from the center of the ditch to both sides, driving out the air bubbles, making the web flat and sticking.
Roof waterproofing matters needing attention
1. It is forbidden to work under 5°C or in the rain.
2. If construction is carried out in a particularly humid and ventilated environment, ventilating equipment should be used to accelerate film formation of the waterproof coating so as not to affect the quality of the waterproof layer;
3, should not be dry sand mortar mixed with water before use;
4. The node processing should be carried out according to relevant regulations, and it is recommended to add a layer of glass fiber mesh;
5. Within 24 hours after coating, it is necessary to prevent people from walking and not wearing high-heeled shoes or spiked shoes to enter the waterproof layer area.
6. The completed waterproof layer must not have iron or steel nails, steel bars, scaffolds or other angular weights on the waterproof layer before construction or stacking, so as not to damage the waterproof layer;
7, after the waterproof layer is completely dry, it can do other cover;
8, do protective measures, such as wearing gloves.
Editor's summary: On the roof waterproof practices and roof waterproof precautions are introduced here, I hope to be helpful to everyone. If you want to know more about yourself, you can follow the information on this site.
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