The best blackout blinds are honeycomb cellular pleated perfect fit blinds in blackout fabric. These fit onto/into the window itself and totally negate the issue of any potential light leakage. The second-best blackout blinds are Roman blinds.

Roman blinds are made of one solid sheet of fabric that folds up in pleats; Venetian blinds are constructed of narrow horizontal slats. Roman blind fabrics are often very elaborate and decorative, whilst Venetian blinds are minimalistic, and made of totally different materials.

Venetian blinds are often made from material that naturally blocks out light. Aluminium and wooden venetian blinds are obviously more solid than fabric blinds, so you don't need to think about getting extra blackout material for them. For that reason wooden blackout blinds are very popular.

Roller shades have a single piece of fabric that rolls up and down around a roller mechanism, while Roman shades raise multiple layers of fabric with a cord. Which option is more budget friendly? A: Roller shades are typically a more affordable option, but it will depend on the material and style.