One. Can stone be directly adhered to the wall?
Stone can be directly installed on interior walls, but only smaller-sized stones can be directly applied to the wall surface. For exterior stone, direct pasting is not recommended, as the direct application of exterior stone to the wall surface is not secure and can lead to issues such as air pockets and detachment over time.
Two. There are several methods for installing stone on walls.
1、Stone installation method: Dry hanging
First, secure the materials to the wall using bolts. Then, create a channel in a stone slab and secure the slab using a T-shaped frame. Finally, fix the T-shaped frame and the bolts together. This method creates a certain distance between the stone wall and the wall itself, but ensures a secure installation.
2、Stone installation using wet-setting method
First, install a steel mesh on the wall surface, then apply concrete using the wet-casting method.
Wet-setting construction is convenient. The stone is soaked in water for two hours before drying, and after proper interface treatment, it can be directly pasted with cement mortar. Stone installation is typically done from bottom to top.
3、Direct adhesive installation of stone
Generally, there are two methods: point pasting and surface pasting. Surface pasting is suitable for thin stones with a thickness of 8mm or less, with a weight similar to ceramic tiles, and can be bonded using specialized mortar. Point pasting uses a specialized stone adhesive, with a maximum dot size of 25cm and a minimum dot size of 3-4cm, and the adhesive thickness should be 0.5cm or more. This method is used for slightly thicker stones.
Direct pasting is not suitable for bathrooms due to the following reasons: Bathrooms typically consist of lightweight walls with high deformation, and bathrooms are often humid, leading to the aging and degradation of the adhesive, which poses a significant safety risk.
Proper surface preparation is also crucial for direct adhesion. First, if there is any putty powder on the concrete wall, it must be removed. Then, direct adhesion should be performed on the concrete wall. Additionally, due to the significant deformation of lightweight walls, if the wall deforms after adhesion, the stone will also change, posing a significant safety risk.