Please dont worry about the problems that may occur in daily use.
1.How to deal with the water leakage at the interface after installation and use?
Please follow the installation instructions and check whether any important parts are missing after installation, especially the waterproof filter. Also make sure your shower head interface is a standard G1/2 thread connection. Finally, check to see if your shower has tightened and no gap in it. If not, tighten it again with the wrench that came with the package.
2. It can be fixed ceiling rain shower or installed on wall shower arm?
Yes, either way is fine.
But Note: Because there is enough weight of a 12 inch or 16 inch shower head, if you buy a 12 inch or 16 inch shower head, you need to install it in standard size extension arms with adjustable angles, please refer to the picture on the details page (fit 12 inch and 16 inch shower head). If the shower arm is curved and small, it will not support the shower arm of our 12 inch or 16 inch shower head. The water flow will not cover the whole body. See the picture on the page (only fit 8 inch shower head).
Before purchasing, please check whether your pipe or shower arm thread meets this standard.
3.What do I do if the pressure drops and the water doesnt flow out or the water flow gets smaller?
We should know that the water in different regions contains different impurities, after a period of time used, the dirt or impurities in the water will be left in your household pipes and inside the showerhead, resulting in the reduction of the water pressure. In this case, it is necessary to clean the inside of the household pipes and the showerhead regularly. Regarding cleaning the inside of the household pipes, please ask for help from a professional plumber. If it is cleaning the inside of the showerhead, you can do some simple cleaning yourself.
4. Are these rainfall shower heads made of stainless steel instead of plastic, corrosion-resistant and durable?
Yes, they are. All are made of high grade 304 stainless steel offer a luxury look, ensuring corrosion resistant and durable, pleaes dont worry about it.