Hi, was not quite sure which forum to put this question into, hopefully this is the right one. I recently had installed a heated mirror in the bathroom, however over the last few weeks the mirror has begun to discolour, this is obvoiulsy down to moisture/condensation getting inside. Is there away of preventing this from worsening. The mirror is designed for bathrooms, i am unable to return to the seller due to purchasing it off EBAY. Grateful for any tips. regards