1. Install solar screens
Put solar screens — also called “sun-shade screens” — on the windows that get the most sun. Generally installed on the outside of windows, they look like insect screens but are made of a mesh material that blocks out some heat and light.
You can buy adjustable versions of these screens that fit into window frames, have screens custom-made or make them yourself.
Since the mesh comes in varying densities, shop around at hardware stores to decide which you need before buying.
Another type of mesh — often called “shade cloth” — also comes in varying densities and can be used outdoors to shade decks, playgrounds, patios and outdoor living areas.