How to do a complete waterproof roof after the sun and rain trouble

Because the roof is exposed to the sun and rain, it is easy to cause leakage and cracking in the long term. Therefore, many buildings will be treated with water in the roof construction to ensure their use in the future. What about roof waterproofing ? Today we use the following content to see how roof waterproofing works !

How to do waterproof roof

Step 1. Before the roof is waterproofed, it is necessary to check whether the top surface is leveled or not, clean the surface layer so that there is no impurity, no dust, and the cement binder needs to be prepared.

Step 2 If the roof is uneven, it is necessary to carry out slope processing according to the design hanging line, and the expansion joint strips should also be installed. After the cement has been leveled, two additional calendering treatments are required to make the roof surface more dense and firm. The rounded corners of the roof should also use rounded trowels to smear arcs. The circumference of the outlet must be within 50 centimeters of the leveling distance. Smeared pits.

Step 3. Next, the construction of the waterproof joint at the roof shall be carried out, and the layers of the waterproof layer and the additional layers shall be bonded together with a cement adhesive. The width shall be approximately 10 cm. The gap between the additional layer and the waterproof layer shall not be low. In five centimeters. Prepare the waterproofing membrane, pre-spread the membrane on the roof surface, and perform vertical leveling. Then roll the waterproof membrane to both sides of the corners and turn the adjusted cement adhesive evenly onto the roof surface. Use a special scraper to gently scrape the adhesive. Then spread the waterproof membrane forward. , And then use the scraper to discharge the air present in the coil and squeeze out excess binder. It should be noted that the degree of adhesion of the waterproofing membrane and the roof screed should reach 85%, and the size of the coil can not be arbitrarily tailored, and the area of ​​the wall surface should not be less than 30 cm.

Step 4. After the waterproof membrane is laid, a cement mortar protective layer shall be made on the waterproof surface layer. The thickness shall be about two centimeters. It may be divided into two constructions. The value of the connection layer at each construction level shall not be less than 20 cm. Flatness is required and watering is required for conservation.

Roof waterproofing construction matters

1. After the waterproof construction of the roof is completed for the second time, the waterproof performance should be checked. The outlet of the roof should be sealed first, and then the water should be released for a four-day water shutoff test. During the period of time, it was carefully observed whether there was a leak in the house, and it was only possible to ensure that there was no water leakage for 96 hours before the waterproof construction was completed.

2. The roof waterproofing is preferably one-time construction. After the construction is completed, waterproof paint should be applied to ensure waterproof performance. In particular, corrosion protection can be used to make roof waterproof more durable.

As for how to do roof waterproofing , Xiao Bian introduced it here for the time being. I hope to help you. If you want to learn more about rooftops, you can follow this website for more information.

Roof waterproof roof waterproof how to do

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