How to make Baby's room darker?

How to Make a Baby’s Bedroom Darker with Window Film.

A simple, effective solution for better daytime sleep.

If sunlight keeps waking your baby during naps or makes it hard to settle them in the early evening, window film is one of the cleanest and most reliable fixes. Unlike bulky blackout curtains that still let light leak around the edges, quality window film is applied directly to the glass. It darkens the room while keeping the space looking neat and uncluttered.

Understanding VLT – The Number That Controls Darkness

VLT stands for Visible Light Transmission. It simply tells you how much visible light the film allows through the glass.

Clear glass lets through roughly 80–90% of visible light.

A lower VLT percentage means less light enters the room, so the space becomes darker.

For a baby’s bedroom, films with a relatively low VLT (around 10–15%) usually deliver the darkness parents need without making the room feel completely closed off.

Recommended Options

The film shown in the pictures is Optitune 15i by avery dennison, a good example of a dual-reflective option in this range. Similar high-performing films that work just as well include:

SunTek SYDS 15

Solar Gard TrueVue 15

Any quality dual-reflective film with a relatively low VLT will do the job. These products typically sit around the 10–15% mark and give strong light control while still allowing a natural view from inside.

We can also go as low as 5% VLT if you want maximum darkness. That level is excellent for rooms that get intense direct sun or for parents who prefer near-blackout conditions during the day. In most cases, however, 15% is the happy medium — dark enough for reliable naps, yet still practical for everyday use.

Secondary Benefits That Matter in a Nursery

Heat reduction

These low-VLT dual-reflective films reject a high percentage of solar energy. The room stays cooler in warmer months, which helps babies sleep more comfortably and can reduce reliance on air conditioning.

Daytime privacy

The reflective exterior makes it difficult for people outside to see in during the day, while you can still see out. This is useful for street-facing or neighbour-facing windows. (At night, when lights are on inside, privacy is reduced, so many parents still use lightweight curtains for full evening privacy.)

UV protection

Quality films in this range block around 99% of UV rays, helping protect furnishings, flooring and your baby’s skin from long-term sun exposure.

Professional Installation for the Best Result

Because these are high-performance architectural films, professional installation ensures a smooth, bubble-free finish that lasts for years and looks clean from every angle. We measure, prepare and apply the film carefully so the darkness and performance you expect are delivered consistently across every pane.

Window film is a low-profile, long-term solution for controlling light in a baby’s bedroom. Whether you choose the option shown in the pictures (optitune15i by avery dennison), SunTek SYDS 15, Solar Gard TrueVue 15, or another low-VLT dual-reflective film, the result is the same: a noticeably darker room that supports better daytime sleep, with the added benefits of heat reduction and privacy.

If you would like to darken your nursery or children’s room, contact us for a free quote or to arrange a visit. We can show you samples so you can see the exact light level and appearance in your own space.