Curtain panels made of thicker, darker colored materials, such as black or navy thick cotton or polyester, will block out more of the sun than curtains made of thinner, lighter colored fabrics, such as a white or oatmeal linen. [3] X Research source If you want to block out the sun completely, paneled blackout curtains are a great option. [4] X Trustworthy Source U. S. Department of Energy Official site for the U. S. Department of Energy, which provides resources related to energy safety, conservation, and efficiency Go to source Spread your curtains out the length of the window to block more sun from shining through, or push them back a bit to let a little light in. Adhere Velcro strips to the inside edges of your curtains to keep the curtains closed in the middle. [5] X Research source

Cordless fabric blinds tend to be more effective at blocking out the sun than vinyl blinds. [7] X Research source Like blackout curtains, you can also purchase blackout blinds if you want to completely block the sun. [8] X Research source If you only want to partially block the sun, you can twist the blind wand to open the blinds a bit to let some light shine through.

Both interior and exterior shutters come in a variety of materials, such as wood, steel, aluminum, and vinyl, and are available at a wide variety of price points. Therefore, if you like the look of either interior or exterior shutters, you’ll likely be able to find an option at your desired price point.

Both metal, wood, and canvas awnings generally require weather-resistant coating and maintenance every 4 to 6 years. [11] X Research source Acrylic and PV awnings tend to be more resistant to mildew and fading and are generally easier to maintain. [12] X Research source

You can also make your own window screens for a more cost-effective option. Window screens also allow you to keep your windows open without letting any bugs or debris come in through the windows.

Try using a hairdryer to blow hot air onto the film to get it to adhere to the glass more securely. You can purchase tinted window film online or at most home improvement stores.

Frosting the window glass is also a great way to get a bit more privacy and keep people outside from being able to look in. 1 coat of spray paint will partially block the sun. If you want to block the sun even more, apply 2 or 3 coats. [17] X Research source Frosted spray paint is sold widely online and at several home improvement stores.

Painter’s tape won’t peel the paint off the window frame or wall when you decide to take the cardboard down.

Covering your windows with aluminum foil will also insulate the windows, which can help reduce heating and cooling costs.