[Home Theater Network HDAV.com.cn] Recently, the rain has continued, and the underground audio-visual rooms, gymnasiums, wine cellars, etc. of the villa owners have not been blistered. Didn’t it be soaked or not, the phenomenon of resurgence appeared? At this moment, I believe many owners said Worried... So, how does the villa basement be protected from moisture? Industry veterans answer your questions.
First, the basement needs to be eliminated
Liquid water: This is the source of moisture in the basement. It exists in the outdoor soil, pervasive, and penetrates into the room along the micro-cracks, capillary pores, etc. of the basement structure.
Gaseous water: exists in the basement space in the form of water vapor, and condenses into water droplets on the surface of objects with low temperature.
Second, how to prevent liquid water from infiltrating?
1. Basement waterproof construction process 1: internal defense treatment
After the renovation of the entrance and the renovation of the civil works, it is very necessary to do a waterproof treatment on all the walls and the ground of the basement to ensure that liquid water is prevented from penetrating into the room.
2, basement waterproof construction process 2: external defense treatment
After the construction of the wall of the enclosure structure is completed, the exterior wall surface of the waterproof material enclosure structure is used for waterproof treatment. This process should be completed by the developer at the time of construction. After the owner receives the house, he must always pay attention to it during the heavy rain or rainy season. Check if there is any water seepage point. Once the water seepage point is found, you must contact the property or developer to re-water the outer wall after opening the soil.
3, basement waterproof construction plan three: isolated treatment
In order to prevent damage to the waterproof layer of the keel and the wiring groove during the decoration, it is recommended to isolate the new single-walled brick wall of the wall that needs to be slotted or installed with keel, and then cast a certain thickness of concrete on the ground.
Third, how to prevent gaseous water
1, the choice of decoration materials
The selection of the decoration materials for the basement of the villa must consider the moisture-proof factors, and choose waterproof materials such as waterproof gypsum board, waterproof coating and diatom mud. The ceiling is best to choose light steel keel such as waterproof and anti-corrosive materials, and some areas need to use wooden keel (such as private theater), must use anti-corrosion wood keel.
2. Designing an automatic drainage system for dehumidification
When designing air conditioning, floor heating and fresh air system in communication with comfortable home, we must emphasize the use of dehumidification fresh air purification system with high efficiency dehumidification, fresh air ventilation, purification dust removal and automatic drainage.
Fourth, the basement moisture-proof small method
1, placed dehumidifier
Try not to plant in the basement, and you can put the wet machine inside. If the basement is not too big, the effect of the dehumidifier is more obvious. Cold air conditioning dehumidification also has some effect.
2, prepare desiccant
Hang some strong desiccant, the most common one is activated carbon charcoal, you can also sprinkle some desiccant in some easy to wet corners and ground. You can break the mothball and sprinkle activated carbon powder to remove moisture, but it must be Replace the desiccant at regular intervals.
3, proper ventilation
Since the main cause of humidity is ventilation, it is best to install ventilation in the basement of the villa. If necessary, several skylights can be added for ventilation. Ventilation can take away moisture, be careful not to ventilate after cloudy, rainy or summer heavy rain, and bring a lot of water into the room.
Five, the wall is waterproof and moisture-proof
1. Knock off the original cement mortar layer
Clean up the white paint layer on the original surface (make the original cement mortar brush layer, brush a pure cement slurry, thickness about 1mm.) Expose the concrete base. Clean the surface of the loose material and spray it with water.
Remind you: If the basement wall panel leaks, knock out the cement mortar layer in the leaking part, observe the leakage part, according to the leakage size, determine whether the polyurethane pressure grouting plugging or leaking water does not leak, if the leakage is not serious It's just wet, you can't do the pressure grouting and the water does not leak the leak. On the contrary, the leaking part of the basement is sealed with waterproof and crack-resistant microcrystals, and the scraper is scraped three times with a thickness of 5 mm.
2. Brush with a certain proportion of cement slurry
After the completion of the first step, the 1:2.5 cement mortar is mixed with 10% of the weight of the three anti-microcrystals, and the powder is divided into 3 times and the thickness is about 25 mm.
The specific mix ratio is: 32.5 ordinary Portland cement 100 kg; medium coarse sand 250 kg; three anti-microcrystalline 10 kg and 50 kg water. * The yellow sand selected for the damp construction of the villa basement must be medium coarse sand.
3, wall scraping putty to make decorative layers such as interior wall paint
After completing the above three steps, it is completed.
The wall three anti-microcrystalline waterproof mortar mixing method is: the wall is made of three anti-microcrystalline waterproof mortar, the dry three anti-microcrystals and cement are mixed dry, mix well, and then mix well with the medium sand, add water, water added You can paint it, you must mix the cement slurry, don't be too thin and not too dry, stir it evenly in one and a half hours.
Sixth, the ground is waterproof and moisture proof
1. Thoroughly clean the surface and apply the cement slurry
The concrete surface of the leaked part is loosened to loosen the concrete cushion, revealing the hard concrete base layer and cleaning the surface floating ash. Clean it with a mop or hoe. Then, use pure cement plus 10% three anti-microcrystalline waterproof to make a slurry, first brush on the ground. There are two cases:
1) If the seepage of the basement leaks, if there is obvious water seepage in the leaking part, polyurethane pressure grouting should be used to temporarily seal the leaking point until there is no obvious water seepage.
2) If there is no obvious leakage point, the leakage area is directly sealed with waterproof and anti-cracking microcrystals, and the construction is divided into three times by the scraper. The thickness of the first time of the basement seepage is controlled at about 2 mm, and the grid is attached immediately after completion. After 12 hours of opening, the second construction was carried out with a scraper. The second thickness was controlled at about 2 mm, and then separated by 12 hours for the third time with a scraper. The thickness was controlled at about 1 mm.
2, the ground leveling
After finishing the above steps, and then leveling with three anti-microcrystalline waterproof fine stone concrete, the thickness is about 30mm (3 cm), the specific mix ratio: 5 kg three anti-microcrystal: 50 kg label 32.5 cement: 125 kg medium sand: 200 Kilogram of gravel (melon seeds): 25 kg of water.
Tips:
Cement must use ordinary Portland cement with a value of 32.5 or more. The basement seepage water within 15 days after the completion of the above process, the wall will sweat, and even the water will flow down during the rainy season. This is the self-maintenance process of the three anti-microcrystalline waterproof mortar hydration, ventilation within 15 days, will slowly after 28 days After entering the drying period! After the wall surface is white and dry, there will be no condensed water damp and mildew in 20 years! During the curing period, measures such as rapid ventilation and dehumidifier should be used to speed up the drying time of the three anti-microcrystalline waterproof mortar.
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