How to paste the outer wall brick? Introduction of steps and precautions

Ceramic tiles are divided into interior wall tiles and exterior wall tiles. As the name implies, one is posted on the external wall and the other is posted indoors. Although there is no big difference in appearance, there are some differences in functional characteristics, such as exterior wall tiles, which should pay special attention to waterproof and anti-corrosion factors, while interior wall tiles are more beautiful and protective. Today, I'll give you an example of the steps and suggestions for sticking exterior wall tiles, starting from this.

First, grass-roots treatment

(1) When the structure is constructed, the verticality and flatness of the external wall shall meet the specification requirements. Before chiseling, chisel off the concrete protruding from the wall and use it in the recess. 1? ︰3? Cement mortar should be used for leveling. When the leveling thickness is large, it should be leveled by layers. When the deviation of thickness or verticality exceeds? 35mm？ When do you need skills such as barbed wire? Surgical remedial measures.

(2) Before plastering, clean the dust, dirt and oil stains on the surface of brick wall and concrete at the grass-roots level, and remove different interfaces (such as brick wall and concrete? Wall junction) nail wire mesh width? 500mm .

(3) For the concrete wall surface, it should be brushed with a wire brush after roughening, and then the surface should be wetted with water or treated with an interfacial agent to improve the concrete surface. Surface adhesion strength.

(4) Vertical hanging of the outer corner? 2mm？ Use the vertical line of steel wire to make the mortar cake collapse up and down, and the horizontal line is controlled by the long line of window plate line. What is the spacing between the collapsed cakes? 1500mm.

Second, the interface agent.

Will interface agents (such as Hengtai brand? HT- 102) to? 1︰4? Adjust the water-cement ratio to a thick paste, and fully stir. What is the interface after mixing? The principle can be sprayed or directly coated with iron plate. What is the thickness? 2-3mm, high temperature or dry wall, water wet before construction, interface agent on the wall about? 5- 15? Minutes (depending on temperature)? , can be plastered, can also be plastered after the interfacial agent is completely dried.

Third, the foundation plastering

Before plastering, the reserved holes of wall screws should be filled with expansion agent, and the reserved holes of external walls should be chiseled away. 40mm？ Deep bell mouth? And after filling the expansion agent, fill it at the bell mouth? 20mm？ Thick wall king.

Interfacial agent coating? 10~20min？ After that, apply bottom sand in layers and times as required? What is the first mortar thickness of the bottom layer? 10mm？ The first time it should be rubbed flat with wooden crabs, and the next day it should be watered until it is 60% to 70% dry. Paint it a second time. What's the thickness? 10- 15mm, then scrape with a long wooden ruler, rub with a wooden crab, and water the next day. If you need to powder for the third time, the method is the same? The second time, until the bottom mortar paint level off.

Fourth, hanging lines and arranging bricks

On the plaster surface at the grass-roots level, the vertical and horizontal control lines should be hung first, and then the brick hanging control should be carried out according to the specifications, dimensions and arrangement diagram of ceramic tiles. Wire making.

(1) Brick arrangement requirements: According to the requirements of brick arrangement diagram, the width of horizontal and vertical joints should be controlled at? 5~9mm？ And then what? 3 ~ 5 mm. Transverse joint, windowsill surface? Generally at the same level. The walls are all made of bricks, and symmetry is strictly required on both sides of the hole. After the success of brick arrangement, each brick will be hung vertically on the plaster at the grass-roots level. Horizontal frame line, to ensure that the mortar joint is horizontal and vertical after the wall brick is pasted.

(2) Install aluminum alloy windows and leave drip line. After the brick arrangement is completed, install the aluminum alloy window of the external wall according to the hanging line. Have flat windows and bay windows been adopted? Use fine stone concrete leveling layer. Closed-cell elastic expansion glue must be embedded around the window frame. Then color it. Leave a groove and inject sealant. Outside the convex window? 10mm？ Drip line is made of plastic concave thread.

Verb (short for verb)? paste

Before pasting, according to the water absorption of ceramic tiles, fully wet the water and dry it. When sticking bricks, the mortar should be full, and it will survive once. Is it inappropriate? Knock more,? Move,? Especially, mortar can't be moved without rectification after water collection. ? What mortar should be used for sticking bricks? 1︰0.3? What is the weight of cement mortar (fine sand) with water? 20%80 1? Glue, thickness? 7 ~ 10 mm.

Six, caulking

There are two methods of caulking:

(1) Joint filling with ash spoon: spread cement mortar (fine sand: cement = 1: 2) on the ash board, smooth it into a pulp board with a thickness of about 5mm, divide it into strips with ash spoon and send it into the joints of bricks, and wipe off the excess mortar on the brick surface to avoid cement pollution on the brick surface as far as possible.

(2) large-scale plastering: firstly, the brick surface is washed with water; After the surface is dried, the joints are plastered with cement mortar in the above proportion; After the mortar between brick joints is slightly solidified, scrape off the mortar on the brick surface with rubber, wring it out with sponge wet water, and wipe the surface in time until there is no cement trace.

Seven, pointing to

There are three kinds of brick joint effects: convex and concave, concave and flat, and brick surface. Different brick joint designs can achieve different decorative effects. According to the design requirements, after the joint filling is completed, wipe the surface with a tool hook and a clean cloth.

VIII. Cleaning and Maintenance

About 30 hours after the completion of joint filling (depending on the weather at that time), after the joints of the brick are solidified to a certain strength, the brick surface is thoroughly washed with clear water from top to bottom.

The above example is about the pasting method of exterior wall tiles. Therefore, exterior wall tiles are different from interior wall tiles. During installation and operation, we should pay special attention to the implementation of its waterproof and anti-corrosion works, because many changes will take place in the external environment. If the external wall brick is improperly installed in the early stage, it will fall off in the later stage, causing additional troubles and threats. Therefore, the best advice is to refer to the above, understand the skills and suggestions for the installation of exterior wall tiles, and work out the most reasonable way and scheme in combination with the actual situation.