There are two kinds of paving for floor tiles, one is dry shop and the other is wet shop. The difference between the two is:
1, dry shop is actually a method of paving marble, 1:3 cement mortar, hand-kneaded into a group, landing flowers. The dry drum is more likely to be empty, and it is more economical and saves the construction period. However, the thickness of the dry-laid mortar is relatively large (3~4cm), and the large-size bricks in the living room can be dry-laid.
2, wet shop is directly put the cement behind the brick, and then directly on the wall or the ground, the wall tile is used to wet the paving, small bricks and the ground level is better, then wet paving is better, can save the ground thickness.
3, the quality of the two paving methods is the same, the choice of which method depends on the specific situation (the general masonry made the decision is correct.) The general kitchen and bathroom are wet, the living room can be dry. Dry-laid ground mortar requires a certain thickness (at least 3~4cm), and the thickness of the kitchen floor is definitely not enough.
4, empty drum problems and testing
The first thing to do is to know how the empty drum is caused, because the brick has a higher moisture content and must be taken into account when pasting. The base layer before tiling should be fully watered and wet, and the tiles should be soaked in water for at least 20 minutes before being fully dried. Otherwise, the moisture in the mortar is quickly absorbed by the dried base layer and the tile and rapidly condenses, which will affect the bonding fastness. The wall brick will absorb moisture from the cement, so that the cement can not act as a sticking agent, causing dehydration of the cement mortar. Affects its coagulation hardening, problems such as empty drums and shelling.
When the tiles are dry, use a rubber hammer to randomly hit the brick surface. Every place is knocked. It is easy to hear the sound below if there is any empty drum. It is correct to knock a few more times.
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