Do blackout curtains actually make a room hotter

Blackout curtains blocking sunlight in a bedroom to control room temperature

Do blackout curtains actually make a room hotter? Short answer: not usually. In most homes, blackout curtains reduce heat by blocking sunlight before it enters the room. However, under certain conditions—poor airflow, dark heavy fabrics, or improper use—they can trap warmth and make a space feel hotter. To understand why both can be true, it … Read more