You can opt for various waterproof material options. The best one i would suggest for you is a fluted PVC panel that comes in 6"*120" sizes that will not only give you a waterproof solution to you wirings underneath but also give it a fresh new effect in the ceiling and make your bathroom stand out.
You can opt for a ready printed one or a plain white one in case if you wish to paint it with a colour of your choice.
Also you'll have a wide range of surface finishes too in PVC.
Bathrooms are the areas where there is lot of moisture and water usage and hence it is important to use moisture resistant materials to avoid formation of moulds and damps. For ceilings, ACP (aluminium composite panels) are the best. Aluminium is resistant to moisture and guess what! In future if you plan to sell your home, aluminium will give you a good price. The second best material is Hilex board, they give you same look as a regular POP ceiling and you can paint them in any color you like.
Cornerstone Design Studio India
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