If you have a traditional skylight, you undoubtedly know the problem. Condensation occurs frequently. During humid periods with large temperature differences between the interior and exterior, moisture accumulates easily and that causes mildew. Condensation is a natural phenomenon and polycarbonate is a porous plastic, yet the LightCatcher protects itself. An integrated dehumidifier catches it maximally. It prevents any possible condensation from entering the light shaft or the building.