Another way to take care of light gaps and get the ultimate blackout effect is to layer your window treatments.
Best way to block out light from window.
6 use cardboard or a large vertical blind to block light at top of window cut a piece of cardboard or use an extra wide vertical blind and lay it on top of the drape rod.
One of the best ways to block heat from windows exterior shutter and shades are extremely effective in reducing solar heat gain.
Custom cut blinds will more effectively block out light than thinner ones loosely fit to a window opening.
Blackout shades have grown immensely popular in bedrooms media rooms and nurseries.
Often referred to as room darkening shades these offer complete privacy at all times of day let in no light and offer no exterior view when lowered.
If you want to completely block out light from a window the best option is adding a blackout shade or liner.
Anyone with photophobia or light sensitivity knows the pain of tendrils of light coming around the edges of blackout curtains blinds or blankets anything that you can throw over windows to block out light.
Thicker dark vinyl or metal materials are the most effective but neither will equal mylar cellar shades because small amounts of light will seep between the slats even when you close the blinds.
They are usually made of fabric wood steel aluminum or vinyl.
Aluminum foil is easy to use be sure and have the shiny side face in your room flat side out.
People here in california use it all the time to block the bright hot sunlight out of their room.
Measure the dimensions of your window panes and trace these measurements onto a sheet of aluminum foil.
By laying the cardboard or blind on top of the drape rod it will block light from coming up and out of the top of your bedroom window.
Exterior shutters and shades.
Block out the windows with foil if you don t have blackout drapes and blinds.
Cut out the measured foil and stick it in your window with a few strips of painter s tape.