When building a home, we must pay special attention to the wall moisture barrier, which is related to whether the small nests in the future are warm and dry, or wet and moldy. The existence of the wall moisture barrier is to prevent the appearance of water seepage inside the wall, and there are two kinds of horizontal moisture barrier and vertical vapor barrier in the structure. Then, how to do the wall moisture change? There are many people who do not understand the wall moisture barrier , the following small series of simple introduction of the next wall moisture barrier practice .
· The location of the wall moisture barrier
When the floor cushion is made of concrete or other dense material, the moisture-proof layer is set within the cushion, 60 mm below the indoor floor, and at least 150 mm higher than the outdoor floor to prevent the rain from splashing on the wall.
When the mat is a pervious material such as crushed stone, slag, slag, etc., the position of the horizontal damp proof layer should be flush or higher than the place where a tile is placed on the indoor floor, ie 60mm above the ground.
When there is a height difference between the two adjacent rooms on the ground floor, the horizontal damp proof layer should be set in the wall of 60mm below the indoor level of the different elevations, and at the same time, it should be elevated between the upper and lower levels of the horizontal moisture proof layer. A vertical layer of moisture should also be applied along the inside of the floor to prevent moisture in the backfill from intruding into the wall.
· There are the following methods for the ground moisture barrier
(1) Moisture-proof mortar damp proof layer - Apply a layer of 20mm or 30mm thick waterproof mortar made of 1:3 cement mortar mixed with 5% water repellent agent at the position of the moisture proof layer; also use waterproof mortar to build 4-6 tiles. The location is up and down on the indoor floor. The use of waterproof mortar as a moisture barrier is more suitable for buildings with seismic protection requirements.
(2) The linoleum moisture-proof layer - wipe the 20mm-thick mortar screed on the damp-proof layer, then dry the linoleum layer or stick a felt and oil with hot asphalt. The linoleum width is the same as the wall thickness and is laid along the length with a lap length of ≥ lOOmm. The linoleum moisture barrier layer has certain toughness, extensibility, and good moisture resistance performance, but is prone to ageing failure, and at the same time, because the felt layer reduces the adhesion between the upper and lower brick masonry, it weakens the seismic resistance of the brick wall.
(3) The fine stone concrete moisture-proof layer is made of concrete with good compactness, certain waterproof performance, and can be combined with masonry as a whole, and it is commonly used with 60mm thick reinforcing fine stone concrete moisture-proof zone. This practice applies to buildings with high overall stiffness requirements.
(4) Vertical vapour-proof layer—For the vertical wall surface where there is a height difference in the indoor floor of the room, besides setting two upper and lower horizontal vapour-proof layers, the vertical wall surface (on the side of the filling site) should be first cement mortar. Wipe the surface, brush with a cold base oil, and then brush hot asphalt two; can also be mixed with a waterproof mortar mortar surface practice, the other side of the wall requirements for the rendering of cement mortar wall plastering.
Information on the practice of the wall damp proof layer was introduced here for everyone. I hope this article will help you. If you still have anything you don’t understand, you can follow our website and we’ll get back to you as soon as possible.
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