If your skylight is trapping too much heat in your house during the summer, chances are that it may also let out significant heat in the winter. Today’s skylights have advanced technologies (such as Low E coated insulated glass units filled with argon gas) that help prevent heat loss in the winter and heat gain in the summer. Additionally, you can order skylights with tinted glass to reduce solar heat gain. Velux produces skylights with revolutionary SageGlass that can tint to varying shades to compensate for the amount of light desired.
Another option is to install covers that are controlled by either a pole or wired to operate using a wall plate or remote control. Most skylights can accommodate a cover. Options include cellular shades or venetian blinds inside, or awnings on the exterior.