There are a number of different applications that stone cladding is a favourite choice for, such as accentuating architectural elements of a building or covering an otherwise unattractive surface. The most common way of applying cladding is via a wet process, but there are a number of methods to choose from; it is crucial that you ensure you have made the right choice.
Direct Adhered – This is one of the most common methods because it is thinner, less expensive and doesn't require any onsite drilling (which lessens the chances of cracks in the stone occurring). You will need to combine a liquid latex with a cement-based filler powder; this results in a thin bed mortar that is applied to the wall surface.
Spot Bonding – This method is quite similar to the direct adhered one; it uses an epoxy adhesive to adhere the stone cladding to the surface. The distinction here lies in the fact that the epoxy is only applied to about 10% of the area, resulting in gaps or pockets of air between the stone and the wall; this reduces the chances of water staining.
Mechanical – This method involves fixed or embedded anchors or ties being used to attach the stone to the surface. You will need to use thicker cladding, as holes need to be drilled into it and mechanical ties or anchors embedded into it. It is recommended that a gap of three quarters of an inch is left to allow for adequate drainage.
Aluminium Backing – This method is commonly used for cladding that is being installed outside. It is used to provide structural support to the stone and is actually relatively easy to use. Aluminium panels are shaped to fit the project perfectly, and to interlock with each other, before being mounted to the surface using runner clips.
As you can see, each of the above methods is better suited to a different type of stone cladding. If you are looking for a relatively easy method, for example, that is also quite affordable you should top for direct adhered. If you are using the cladding outside, on the other hand, you should definitely opt for aluminium backing for the most long lasting finish possible.