How to choose roof waterproofing materials? What are the roof waterproofing practices?

For some bungalows or top floors that have been in residence for a long time, the leakage of roofing is a common problem, and for this problem, it is basically solved by re-doing roofing waterproofing . And do you know about roofing waterproofing? Let's listen to the decoration of the home of the decoration to explain how to choose the waterproof material of the roof and some steps of the waterproofing of the roof, so that you can have a good way to solve the problem if you really encounter the water leakage problem in the future.

How to choose roof waterproofing materials ?

1. It has good weather resistance (can withstand the test of climate) and has certain tolerance to light, heat and ozone;

2. It has water penetration resistance and acid and alkali resistance;

3. It has certain adaptability to external temperature and external force. The tensile strength of the material is high, and it can withstand the change of temperature difference and the deformation caused by various external forces and the expansion and cracking of the base layer;

4, good overall, not only can maintain its own cohesiveness, but also can firmly bond with the base layer to form a stable non-permeable whole.

What are the steps for roof waterproofing ?

1, grassroots processing

Check the quality and dryness of the screed and clean it. After meeting the requirements, apply the base treatment agent to ensure that the size of the coating can meet the construction needs of the day. After 4 hours of painting, the coil can be laid.

2. Construction process

Base surface cleaning, repairing → coating base treatment agent → additional reinforcement treatment at the node → positioning, elastic, trial shop → paving and coiling → end processing, node sealing → cleaning, inspection, dressing → protective layer construction.

3. Construction sequence

When constructing the waterproof layer, the joints of the nodes, the additional layers and the roof drainage should be treated first, and then the construction should be carried out from the lowest elevation of the roof. When paving gutters and cornices, the direction of Yishun Gutter and Mouth shall be reduced to reduce overlap. During the construction, the construction shall be carried out according to the principle of first high, then low, first and then near.

4, the lap method

The lap joint method is adopted when laying the coil, and the lap joints of the adjacent two coils should be staggered, the lap joint of the slope roof of the steel roof truss is slid in the direction of the water, and the joint perpendicular to the ridge direction is slid along the dominant wind direction. .

5, the paving requirements of special parts of the roof

Mouth: The material that is laid on the end of the mouth is cut and pressed into the groove, and then the groove is embedded and sealed with a sealing material. It is fixed by a nail with a gasket, and the nail is nailed into the groove and the end of the coil is sealed with a sealing material.

Gutters, cornices and water outlets: Before the coils are laid at the gutters and gullies, the water outlets should be sealed first. The water around the water outlets should be covered with waterproof paint within 500mm. A groove with a width of 20 mm and a depth of 20 mm is embedded in the joint between the water outlet and the base layer; when the gutter is used, the gutter is laid from the bottom of the ditch from the bottom of the ditch to the watershed, and the paving is used. The scraper is scraped from the center of the bottom of the ditch to both sides to remove the air bubbles, so that the coil is laid flat and the paste is dense.

Flooding and coiling: Before the flooding of the flooded parts, first test the paving, leave the length of the façade, leave the flat coil to the corner, and then lay the façade from bottom to top. material. After the paving is completed, the ends are cut and sealed with a sealing material. Yin and Yangjiao: After the base layer of the yin and yang corner is glued, seal the distance between the corners with a sealing paste of 100mm, and then lay a layer of additional layer of the coil. After the paving, the seam is sealed with a sealing paste.

Doing roof waterproofing can protect your home from rain or snow, so that you don't have a headache when it is raining or snowing, so you can keep your home clean. If you want to know more about decoration, please continue to pay attention to the decoration home network.

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What are the practices of roof waterproofing? Detailed explanation of 3 kinds of roof waterproofing practices