A Solid Panel Door is made of uPVC Foam sheet with stable infill materials in the corners of the door to make it 35mm and is panelled with 5mm Foam sheet in the inner part of the door. The PVC frame is also made with proper infill materials for strength and stability of the door. This door is used for Bathroom.
PVC doors can become discoloured and breakable at the end of their lifespan. At some point, it'll become so broken down you need to replace it all together rather than have it fixed.